id sid tid token lemma pos american_scientific_journal-3702 1 1 252 252 NUM american_scientific_journal-3702 1 2 american american ADJ american_scientific_journal-3702 1 3 scientific scientific ADJ american_scientific_journal-3702 1 4 research research NOUN american_scientific_journal-3702 1 5 journal journal NOUN american_scientific_journal-3702 1 6 for for ADP american_scientific_journal-3702 1 7 engineering engineering NOUN american_scientific_journal-3702 1 8 , , PUNCT american_scientific_journal-3702 1 9 technology technology NOUN american_scientific_journal-3702 1 10 , , PUNCT american_scientific_journal-3702 1 11 and and CCONJ american_scientific_journal-3702 1 12 sciences science NOUN american_scientific_journal-3702 1 13 ( ( PUNCT american_scientific_journal-3702 1 14 asrjets asrjet NOUN american_scientific_journal-3702 1 15 ) ) PUNCT american_scientific_journal-3702 1 16 issn issn PROPN american_scientific_journal-3702 1 17 ( ( PUNCT american_scientific_journal-3702 1 18 print print NOUN american_scientific_journal-3702 1 19 ) ) PUNCT american_scientific_journal-3702 1 20 2313 2313 NUM american_scientific_journal-3702 1 21 - - SYM american_scientific_journal-3702 1 22 4410 4410 NUM american_scientific_journal-3702 1 23 , , PUNCT american_scientific_journal-3702 1 24 issn issn PROPN american_scientific_journal-3702 1 25 ( ( PUNCT american_scientific_journal-3702 1 26 online online ADJ american_scientific_journal-3702 1 27 ) ) PUNCT american_scientific_journal-3702 1 28 2313 2313 NUM american_scientific_journal-3702 1 29 - - SYM american_scientific_journal-3702 1 30 4402 4402 NUM american_scientific_journal-3702 1 31 Β© Β© PROPN american_scientific_journal-3702 1 32 global global ADJ american_scientific_journal-3702 1 33 society society NOUN american_scientific_journal-3702 1 34 of of ADP american_scientific_journal-3702 1 35 scientific scientific ADJ american_scientific_journal-3702 1 36 research research NOUN american_scientific_journal-3702 1 37 and and CCONJ american_scientific_journal-3702 1 38 researchers researcher NOUN american_scientific_journal-3702 1 39 http://asrjetsjournal.org/ http://asrjetsjournal.org/ PRON american_scientific_journal-3702 1 40 high high ADJ american_scientific_journal-3702 1 41 gain gain VERB american_scientific_journal-3702 1 42 ultra ultra ADJ american_scientific_journal-3702 1 43 - - ADJ american_scientific_journal-3702 1 44 wideband wideband ADJ american_scientific_journal-3702 1 45 parabolic parabolic ADJ american_scientific_journal-3702 1 46 reflector reflector NOUN american_scientific_journal-3702 1 47 antenna antenna NOUN american_scientific_journal-3702 1 48 design design NOUN american_scientific_journal-3702 1 49 using use VERB american_scientific_journal-3702 1 50 printed print VERB american_scientific_journal-3702 1 51 lpda lpda NOUN american_scientific_journal-3702 1 52 antenna antenna NOUN american_scientific_journal-3702 1 53 feed feed NOUN american_scientific_journal-3702 1 54 mustafa mustafa PROPN american_scientific_journal-3702 1 55 pehlivana pehlivana PROPN american_scientific_journal-3702 1 56 * * PROPN american_scientific_journal-3702 1 57 , , PUNCT american_scientific_journal-3702 1 58 yavuz yavuz PROPN american_scientific_journal-3702 1 59 ascib ascib PROPN american_scientific_journal-3702 1 60 a a PRON american_scientific_journal-3702 1 61 , , PUNCT american_scientific_journal-3702 1 62 bege bege PROPN american_scientific_journal-3702 1 63 university university PROPN american_scientific_journal-3702 1 64 , , PUNCT american_scientific_journal-3702 1 65 electrical electrical ADJ american_scientific_journal-3702 1 66 and and CCONJ american_scientific_journal-3702 1 67 electronics electronic NOUN american_scientific_journal-3702 1 68 engineering engineering NOUN american_scientific_journal-3702 1 69 , , PUNCT american_scientific_journal-3702 1 70 izmir izmir PROPN american_scientific_journal-3702 1 71 , , PUNCT american_scientific_journal-3702 1 72 turkey turkey NOUN american_scientific_journal-3702 1 73 aemail aemail NOUN american_scientific_journal-3702 1 74 : : PUNCT american_scientific_journal-3702 2 1 mustpehl@gmail.com mustpehl@gmail.com X american_scientific_journal-3702 2 2 bemail bemail NOUN american_scientific_journal-3702 2 3 : : PUNCT american_scientific_journal-3702 2 4 yauuz.asci@gmail.com yauuz.asci@gmail.com X american_scientific_journal-3702 2 5 abstract abstract ADJ american_scientific_journal-3702 2 6 reflector reflector NOUN american_scientific_journal-3702 2 7 antennas antenna NOUN american_scientific_journal-3702 2 8 with with ADP american_scientific_journal-3702 2 9 log log NOUN american_scientific_journal-3702 2 10 periodic periodic ADJ american_scientific_journal-3702 2 11 dipole dipole NOUN american_scientific_journal-3702 2 12 array array NOUN american_scientific_journal-3702 2 13 ( ( PUNCT american_scientific_journal-3702 2 14 lpda lpda NOUN american_scientific_journal-3702 2 15 ) ) PUNCT american_scientific_journal-3702 2 16 feeds feed NOUN american_scientific_journal-3702 2 17 are be AUX american_scientific_journal-3702 2 18 ideal ideal ADJ american_scientific_journal-3702 2 19 for for ADP american_scientific_journal-3702 2 20 applications application NOUN american_scientific_journal-3702 2 21 that that PRON american_scientific_journal-3702 2 22 demand demand VERB american_scientific_journal-3702 2 23 high high ADJ american_scientific_journal-3702 2 24 gain gain NOUN american_scientific_journal-3702 2 25 , , PUNCT american_scientific_journal-3702 2 26 broadband broadband NOUN american_scientific_journal-3702 2 27 operation operation NOUN american_scientific_journal-3702 2 28 . . PUNCT american_scientific_journal-3702 3 1 however however ADV american_scientific_journal-3702 3 2 , , PUNCT american_scientific_journal-3702 3 3 when when SCONJ american_scientific_journal-3702 3 4 the the DET american_scientific_journal-3702 3 5 phase phase NOUN american_scientific_journal-3702 3 6 center center NOUN american_scientific_journal-3702 3 7 of of ADP american_scientific_journal-3702 3 8 the the DET american_scientific_journal-3702 3 9 lpda lpda NOUN american_scientific_journal-3702 3 10 is be AUX american_scientific_journal-3702 3 11 not not PART american_scientific_journal-3702 3 12 fixed fix VERB american_scientific_journal-3702 3 13 , , PUNCT american_scientific_journal-3702 3 14 mismatches mismatch NOUN american_scientific_journal-3702 3 15 at at ADP american_scientific_journal-3702 3 16 the the DET american_scientific_journal-3702 3 17 focal focal ADJ american_scientific_journal-3702 3 18 point point NOUN american_scientific_journal-3702 3 19 cause cause VERB american_scientific_journal-3702 3 20 degradation degradation NOUN american_scientific_journal-3702 3 21 and and CCONJ american_scientific_journal-3702 3 22 large large ADJ american_scientific_journal-3702 3 23 ripple ripple NOUN american_scientific_journal-3702 3 24 in in ADP american_scientific_journal-3702 3 25 gain gain NOUN american_scientific_journal-3702 3 26 . . PUNCT american_scientific_journal-3702 4 1 to to PART american_scientific_journal-3702 4 2 overcome overcome VERB american_scientific_journal-3702 4 3 these these DET american_scientific_journal-3702 4 4 issues issue NOUN american_scientific_journal-3702 4 5 , , PUNCT american_scientific_journal-3702 4 6 a a DET american_scientific_journal-3702 4 7 printed print VERB american_scientific_journal-3702 4 8 lpda lpda NOUN american_scientific_journal-3702 4 9 is be AUX american_scientific_journal-3702 4 10 optimized optimize VERB american_scientific_journal-3702 4 11 for for ADP american_scientific_journal-3702 4 12 minimal minimal ADJ american_scientific_journal-3702 4 13 phase phase NOUN american_scientific_journal-3702 4 14 center center NOUN american_scientific_journal-3702 4 15 variation variation NOUN american_scientific_journal-3702 4 16 as as ADP american_scientific_journal-3702 4 17 a a DET american_scientific_journal-3702 4 18 reflector reflector NOUN american_scientific_journal-3702 4 19 antenna antenna NOUN american_scientific_journal-3702 4 20 feed feed NOUN american_scientific_journal-3702 4 21 . . PUNCT american_scientific_journal-3702 5 1 the the DET american_scientific_journal-3702 5 2 antenna antenna NOUN american_scientific_journal-3702 5 3 is be AUX american_scientific_journal-3702 5 4 designed design VERB american_scientific_journal-3702 5 5 to to PART american_scientific_journal-3702 5 6 operate operate VERB american_scientific_journal-3702 5 7 at at ADP american_scientific_journal-3702 5 8 1 1 NUM american_scientific_journal-3702 5 9 - - SYM american_scientific_journal-3702 5 10 19 19 NUM american_scientific_journal-3702 5 11 ghz ghz NOUN american_scientific_journal-3702 5 12 frequency frequency NOUN american_scientific_journal-3702 5 13 band band NOUN american_scientific_journal-3702 5 14 with with ADP american_scientific_journal-3702 5 15 voltage voltage NOUN american_scientific_journal-3702 5 16 standing standing NOUN american_scientific_journal-3702 5 17 wave wave PROPN american_scientific_journal-3702 5 18 ratio ratio NOUN american_scientific_journal-3702 5 19 ( ( PUNCT american_scientific_journal-3702 5 20 vswr vswr VERB american_scientific_journal-3702 5 21 ) ) PUNCT american_scientific_journal-3702 5 22 less less ADJ american_scientific_journal-3702 5 23 than than ADP american_scientific_journal-3702 5 24 3.0 3.0 NUM american_scientific_journal-3702 5 25 and and CCONJ american_scientific_journal-3702 5 26 minimum minimum ADJ american_scientific_journal-3702 5 27 gain gain NOUN american_scientific_journal-3702 5 28 of of ADP american_scientific_journal-3702 5 29 17 17 NUM american_scientific_journal-3702 5 30 dbi dbi NOUN american_scientific_journal-3702 5 31 . . PUNCT american_scientific_journal-3702 6 1 reflector reflector NOUN american_scientific_journal-3702 6 2 size size NOUN american_scientific_journal-3702 6 3 can can AUX american_scientific_journal-3702 6 4 be be AUX american_scientific_journal-3702 6 5 increased increase VERB american_scientific_journal-3702 6 6 for for ADP american_scientific_journal-3702 6 7 further further ADJ american_scientific_journal-3702 6 8 improvement improvement NOUN american_scientific_journal-3702 6 9 in in ADP american_scientific_journal-3702 6 10 gain gain NOUN american_scientific_journal-3702 6 11 . . PUNCT american_scientific_journal-3702 7 1 designed design VERB american_scientific_journal-3702 7 2 antenna antenna NOUN american_scientific_journal-3702 7 3 parameters parameter NOUN american_scientific_journal-3702 7 4 , , PUNCT american_scientific_journal-3702 7 5 radiation radiation NOUN american_scientific_journal-3702 7 6 patterns pattern NOUN american_scientific_journal-3702 7 7 , , PUNCT american_scientific_journal-3702 7 8 and and CCONJ american_scientific_journal-3702 7 9 aperture aperture ADJ american_scientific_journal-3702 7 10 efficiencies efficiency NOUN american_scientific_journal-3702 7 11 over over ADP american_scientific_journal-3702 7 12 frequencies frequency NOUN american_scientific_journal-3702 7 13 are be AUX american_scientific_journal-3702 7 14 presented present VERB american_scientific_journal-3702 7 15 and and CCONJ american_scientific_journal-3702 7 16 compared compare VERB american_scientific_journal-3702 7 17 to to ADP american_scientific_journal-3702 7 18 previous previous ADJ american_scientific_journal-3702 7 19 studies study NOUN american_scientific_journal-3702 7 20 . . PUNCT american_scientific_journal-3702 8 1 keywords keyword NOUN american_scientific_journal-3702 8 2 : : PUNCT american_scientific_journal-3702 8 3 log log VERB american_scientific_journal-3702 8 4 periodic periodic ADJ american_scientific_journal-3702 8 5 dipole dipole NOUN american_scientific_journal-3702 8 6 array array NOUN american_scientific_journal-3702 8 7 ; ; PUNCT american_scientific_journal-3702 8 8 uwb uwb PROPN american_scientific_journal-3702 8 9 ; ; PUNCT american_scientific_journal-3702 8 10 reflector reflector NOUN american_scientific_journal-3702 8 11 antenna antenna NOUN american_scientific_journal-3702 8 12 ; ; PUNCT american_scientific_journal-3702 8 13 parabolic parabolic ADJ american_scientific_journal-3702 8 14 reflector reflector NOUN american_scientific_journal-3702 8 15 ; ; PUNCT american_scientific_journal-3702 8 16 high high ADJ american_scientific_journal-3702 8 17 gain gain NOUN american_scientific_journal-3702 8 18 ; ; PUNCT american_scientific_journal-3702 8 19 direction direction NOUN american_scientific_journal-3702 8 20 finding finding NOUN american_scientific_journal-3702 8 21 ; ; PUNCT american_scientific_journal-3702 8 22 electronic electronic ADJ american_scientific_journal-3702 8 23 intelligence intelligence NOUN american_scientific_journal-3702 8 24 . . PUNCT american_scientific_journal-3702 9 1 1 1 X american_scientific_journal-3702 9 2 . . X american_scientific_journal-3702 9 3 introduction introduction NOUN american_scientific_journal-3702 9 4 high high ADJ american_scientific_journal-3702 9 5 gain gain NOUN american_scientific_journal-3702 9 6 , , PUNCT american_scientific_journal-3702 9 7 broadband broadband NOUN american_scientific_journal-3702 9 8 antennas antenna NOUN american_scientific_journal-3702 9 9 play play VERB american_scientific_journal-3702 9 10 a a DET american_scientific_journal-3702 9 11 vital vital ADJ american_scientific_journal-3702 9 12 role role NOUN american_scientific_journal-3702 9 13 in in ADP american_scientific_journal-3702 9 14 electronic electronic ADJ american_scientific_journal-3702 9 15 intelligence intelligence NOUN american_scientific_journal-3702 9 16 systems system NOUN american_scientific_journal-3702 9 17 [ [ X american_scientific_journal-3702 9 18 1 1 NUM american_scientific_journal-3702 9 19 ] ] PUNCT american_scientific_journal-3702 9 20 , , PUNCT american_scientific_journal-3702 9 21 multimode multimode NOUN american_scientific_journal-3702 9 22 radars radar NOUN american_scientific_journal-3702 9 23 [ [ X american_scientific_journal-3702 9 24 2 2 NUM american_scientific_journal-3702 9 25 ] ] PUNCT american_scientific_journal-3702 9 26 , , PUNCT american_scientific_journal-3702 9 27 satellite satellite NOUN american_scientific_journal-3702 9 28 communication communication NOUN american_scientific_journal-3702 9 29 and and CCONJ american_scientific_journal-3702 9 30 broadcasting broadcasting NOUN american_scientific_journal-3702 9 31 services service NOUN american_scientific_journal-3702 9 32 [ [ X american_scientific_journal-3702 9 33 3 3 NUM american_scientific_journal-3702 9 34 - - SYM american_scientific_journal-3702 9 35 5 5 NUM american_scientific_journal-3702 9 36 ] ] PUNCT american_scientific_journal-3702 9 37 . . PUNCT american_scientific_journal-3702 10 1 one one NUM american_scientific_journal-3702 10 2 particular particular ADJ american_scientific_journal-3702 10 3 broadband broadband NOUN american_scientific_journal-3702 10 4 antenna antenna NOUN american_scientific_journal-3702 10 5 is be AUX american_scientific_journal-3702 10 6 log log NOUN american_scientific_journal-3702 10 7 periodic periodic ADJ american_scientific_journal-3702 10 8 dipole dipole NOUN american_scientific_journal-3702 10 9 array array NOUN american_scientific_journal-3702 10 10 ( ( PUNCT american_scientific_journal-3702 10 11 lpda lpda NOUN american_scientific_journal-3702 10 12 ) ) PUNCT american_scientific_journal-3702 10 13 which which PRON american_scientific_journal-3702 10 14 consists consist VERB american_scientific_journal-3702 10 15 of of ADP american_scientific_journal-3702 10 16 logarithmically logarithmically ADV american_scientific_journal-3702 10 17 scaled scale VERB american_scientific_journal-3702 10 18 half half ADJ american_scientific_journal-3702 10 19 wavelength wavelength NOUN american_scientific_journal-3702 10 20 dipoles dipole NOUN american_scientific_journal-3702 10 21 . . PUNCT american_scientific_journal-3702 11 1 lpda lpda NOUN american_scientific_journal-3702 11 2 provides provide VERB american_scientific_journal-3702 11 3 acceptable acceptable ADJ american_scientific_journal-3702 11 4 gain gain NOUN american_scientific_journal-3702 11 5 for for ADP american_scientific_journal-3702 11 6 most most ADJ american_scientific_journal-3702 11 7 of of ADP american_scientific_journal-3702 11 8 the the DET american_scientific_journal-3702 11 9 ultra ultra ADJ american_scientific_journal-3702 11 10 - - ADJ american_scientific_journal-3702 11 11 wideband wideband ADJ american_scientific_journal-3702 11 12 applications application NOUN american_scientific_journal-3702 11 13 . . PUNCT american_scientific_journal-3702 12 1 however however ADV american_scientific_journal-3702 12 2 , , PUNCT american_scientific_journal-3702 12 3 if if SCONJ american_scientific_journal-3702 12 4 higher high ADJ american_scientific_journal-3702 12 5 gain gain NOUN american_scientific_journal-3702 12 6 is be AUX american_scientific_journal-3702 12 7 needed need VERB american_scientific_journal-3702 12 8 , , PUNCT american_scientific_journal-3702 12 9 lpda lpda NOUN american_scientific_journal-3702 12 10 alone alone ADV american_scientific_journal-3702 12 11 becomes become VERB american_scientific_journal-3702 12 12 inadequate inadequate ADJ american_scientific_journal-3702 12 13 . . PUNCT american_scientific_journal-3702 13 1 ----------------------------------------------------------------------- ----------------------------------------------------------------------- PUNCT american_scientific_journal-3702 14 1 * * PUNCT american_scientific_journal-3702 14 2 corresponding correspond VERB american_scientific_journal-3702 14 3 author author NOUN american_scientific_journal-3702 14 4 . . PUNCT american_scientific_journal-3702 15 1 http://asrjetsjournal.org/ http://asrjetsjournal.org/ PROPN american_scientific_journal-3702 15 2 american american PROPN american_scientific_journal-3702 15 3 scientific scientific PROPN american_scientific_journal-3702 15 4 research research NOUN american_scientific_journal-3702 15 5 journal journal NOUN american_scientific_journal-3702 15 6 for for ADP american_scientific_journal-3702 15 7 engineering engineering NOUN american_scientific_journal-3702 15 8 , , PUNCT american_scientific_journal-3702 15 9 technology technology NOUN american_scientific_journal-3702 15 10 , , PUNCT american_scientific_journal-3702 15 11 and and CCONJ american_scientific_journal-3702 15 12 sciences science NOUN american_scientific_journal-3702 15 13 ( ( PUNCT american_scientific_journal-3702 15 14 asrjets asrjet NOUN american_scientific_journal-3702 15 15 ) ) PUNCT american_scientific_journal-3702 15 16 ( ( PUNCT american_scientific_journal-3702 15 17 2017 2017 NUM american_scientific_journal-3702 15 18 ) ) PUNCT american_scientific_journal-3702 15 19 volume volume NOUN american_scientific_journal-3702 15 20 38 38 NUM american_scientific_journal-3702 15 21 , , PUNCT american_scientific_journal-3702 15 22 no no DET american_scientific_journal-3702 15 23 2 2 NUM american_scientific_journal-3702 15 24 , , PUNCT american_scientific_journal-3702 15 25 pp pp ADV american_scientific_journal-3702 15 26 252 252 NUM american_scientific_journal-3702 15 27 - - SYM american_scientific_journal-3702 15 28 261 261 NUM american_scientific_journal-3702 15 29 253 253 NUM american_scientific_journal-3702 15 30 moreover moreover ADV american_scientific_journal-3702 15 31 , , PUNCT american_scientific_journal-3702 15 32 wire wire NOUN american_scientific_journal-3702 15 33 dipole dipole NOUN american_scientific_journal-3702 15 34 form form NOUN american_scientific_journal-3702 15 35 of of ADP american_scientific_journal-3702 15 36 lpda lpda NOUN american_scientific_journal-3702 15 37 has have VERB american_scientific_journal-3702 15 38 large large ADJ american_scientific_journal-3702 15 39 antenna antenna NOUN american_scientific_journal-3702 15 40 form form NOUN american_scientific_journal-3702 15 41 factor factor NOUN american_scientific_journal-3702 15 42 which which PRON american_scientific_journal-3702 15 43 precludes preclude VERB american_scientific_journal-3702 15 44 its its PRON american_scientific_journal-3702 15 45 usage usage NOUN american_scientific_journal-3702 15 46 in in ADP american_scientific_journal-3702 15 47 spaceconstrained spaceconstrained ADJ american_scientific_journal-3702 15 48 applications application NOUN american_scientific_journal-3702 15 49 . . PUNCT american_scientific_journal-3702 16 1 when when SCONJ american_scientific_journal-3702 16 2 lpda lpda NOUN american_scientific_journal-3702 16 3 is be AUX american_scientific_journal-3702 16 4 printed print VERB american_scientific_journal-3702 16 5 on on ADP american_scientific_journal-3702 16 6 substrate substrate NOUN american_scientific_journal-3702 16 7 , , PUNCT american_scientific_journal-3702 16 8 a a DET american_scientific_journal-3702 16 9 low low ADJ american_scientific_journal-3702 16 10 profile profile NOUN american_scientific_journal-3702 16 11 version version NOUN american_scientific_journal-3702 16 12 can can AUX american_scientific_journal-3702 16 13 be be AUX american_scientific_journal-3702 16 14 easily easily ADV american_scientific_journal-3702 16 15 obtained obtain VERB american_scientific_journal-3702 16 16 . . PUNCT american_scientific_journal-3702 17 1 the the DET american_scientific_journal-3702 17 2 antenna antenna NOUN american_scientific_journal-3702 17 3 size size NOUN american_scientific_journal-3702 17 4 can can AUX american_scientific_journal-3702 17 5 be be AUX american_scientific_journal-3702 17 6 further far ADV american_scientific_journal-3702 17 7 reduced reduce VERB american_scientific_journal-3702 17 8 by by ADP american_scientific_journal-3702 17 9 increasing increase VERB american_scientific_journal-3702 17 10 the the DET american_scientific_journal-3702 17 11 thickness thickness NOUN american_scientific_journal-3702 17 12 or or CCONJ american_scientific_journal-3702 17 13 relative relative ADJ american_scientific_journal-3702 17 14 permittivity permittivity NOUN american_scientific_journal-3702 17 15 of of ADP american_scientific_journal-3702 17 16 the the DET american_scientific_journal-3702 17 17 substrate substrate NOUN american_scientific_journal-3702 17 18 . . PUNCT american_scientific_journal-3702 18 1 one one NUM american_scientific_journal-3702 18 2 of of ADP american_scientific_journal-3702 18 3 the the DET american_scientific_journal-3702 18 4 most most ADJ american_scientific_journal-3702 18 5 design design NOUN american_scientific_journal-3702 18 6 challenges challenge NOUN american_scientific_journal-3702 18 7 in in ADP american_scientific_journal-3702 18 8 using use VERB american_scientific_journal-3702 18 9 lpda lpda NOUN american_scientific_journal-3702 18 10 as as SCONJ american_scientific_journal-3702 18 11 a a DET american_scientific_journal-3702 18 12 reflector reflector NOUN american_scientific_journal-3702 18 13 antenna antenna NOUN american_scientific_journal-3702 18 14 feed feed NOUN american_scientific_journal-3702 18 15 is be AUX american_scientific_journal-3702 18 16 obtaining obtain VERB american_scientific_journal-3702 18 17 a a DET american_scientific_journal-3702 18 18 stable stable ADJ american_scientific_journal-3702 18 19 input input NOUN american_scientific_journal-3702 18 20 port port NOUN american_scientific_journal-3702 18 21 matching match VERB american_scientific_journal-3702 18 22 with with ADP american_scientific_journal-3702 18 23 minimal minimal ADJ american_scientific_journal-3702 18 24 change change NOUN american_scientific_journal-3702 18 25 in in ADP american_scientific_journal-3702 18 26 phase phase NOUN american_scientific_journal-3702 18 27 center center NOUN american_scientific_journal-3702 18 28 [ [ X american_scientific_journal-3702 18 29 6 6 NUM american_scientific_journal-3702 18 30 - - SYM american_scientific_journal-3702 18 31 8 8 NUM american_scientific_journal-3702 18 32 ] ] PUNCT american_scientific_journal-3702 18 33 . . PUNCT american_scientific_journal-3702 19 1 fluctuating fluctuate VERB american_scientific_journal-3702 19 2 phase phase NOUN american_scientific_journal-3702 19 3 center center NOUN american_scientific_journal-3702 19 4 over over ADP american_scientific_journal-3702 19 5 the the DET american_scientific_journal-3702 19 6 frequency frequency NOUN american_scientific_journal-3702 19 7 range range NOUN american_scientific_journal-3702 19 8 causes cause VERB american_scientific_journal-3702 19 9 shifts shift NOUN american_scientific_journal-3702 19 10 in in ADP american_scientific_journal-3702 19 11 focal focal ADJ american_scientific_journal-3702 19 12 point point NOUN american_scientific_journal-3702 19 13 of of ADP american_scientific_journal-3702 19 14 the the DET american_scientific_journal-3702 19 15 reflector reflector NOUN american_scientific_journal-3702 19 16 antenna antenna NOUN american_scientific_journal-3702 19 17 , , PUNCT american_scientific_journal-3702 19 18 which which PRON american_scientific_journal-3702 19 19 , , PUNCT american_scientific_journal-3702 19 20 in in ADP american_scientific_journal-3702 19 21 turn turn NOUN american_scientific_journal-3702 19 22 , , PUNCT american_scientific_journal-3702 19 23 affects affect VERB american_scientific_journal-3702 19 24 attainable attainable ADJ american_scientific_journal-3702 19 25 gain gain NOUN american_scientific_journal-3702 19 26 and and CCONJ american_scientific_journal-3702 19 27 aperture aperture NOUN american_scientific_journal-3702 19 28 efficiency efficiency NOUN american_scientific_journal-3702 19 29 , , PUNCT american_scientific_journal-3702 19 30 and and CCONJ american_scientific_journal-3702 19 31 degraded degraded ADJ american_scientific_journal-3702 19 32 voltage voltage NOUN american_scientific_journal-3702 19 33 standing standing NOUN american_scientific_journal-3702 19 34 wave wave NOUN american_scientific_journal-3702 19 35 ratio ratio NOUN american_scientific_journal-3702 19 36 ( ( PUNCT american_scientific_journal-3702 19 37 vswr vswr PROPN american_scientific_journal-3702 19 38 ) ) PUNCT american_scientific_journal-3702 19 39 . . PUNCT american_scientific_journal-3702 20 1 one one NUM american_scientific_journal-3702 20 2 of of ADP american_scientific_journal-3702 20 3 the the DET american_scientific_journal-3702 20 4 first first ADJ american_scientific_journal-3702 20 5 studies study NOUN american_scientific_journal-3702 20 6 in in ADP american_scientific_journal-3702 20 7 which which PRON american_scientific_journal-3702 20 8 parabolic parabolic ADJ american_scientific_journal-3702 20 9 reflectors reflector NOUN american_scientific_journal-3702 20 10 were be AUX american_scientific_journal-3702 20 11 fed feed VERB american_scientific_journal-3702 20 12 by by ADP american_scientific_journal-3702 20 13 lpda lpda NOUN american_scientific_journal-3702 20 14 was be AUX american_scientific_journal-3702 20 15 reported report VERB american_scientific_journal-3702 20 16 in in ADP american_scientific_journal-3702 20 17 [ [ X american_scientific_journal-3702 20 18 9 9 NUM american_scientific_journal-3702 20 19 ] ] PUNCT american_scientific_journal-3702 20 20 , , PUNCT american_scientific_journal-3702 20 21 where where SCONJ american_scientific_journal-3702 20 22 the the DET american_scientific_journal-3702 20 23 optimum optimum ADJ american_scientific_journal-3702 20 24 value value NOUN american_scientific_journal-3702 20 25 of of ADP american_scientific_journal-3702 20 26 the the DET american_scientific_journal-3702 20 27 focal focal ADJ american_scientific_journal-3702 20 28 length length NOUN american_scientific_journal-3702 20 29 to to ADP american_scientific_journal-3702 20 30 diameter diameter NOUN american_scientific_journal-3702 20 31 ratio ratio NOUN american_scientific_journal-3702 20 32 of of ADP american_scientific_journal-3702 20 33 reflector reflector NOUN american_scientific_journal-3702 20 34 was be AUX american_scientific_journal-3702 20 35 targeted target VERB american_scientific_journal-3702 20 36 . . PUNCT american_scientific_journal-3702 21 1 the the DET american_scientific_journal-3702 21 2 effect effect NOUN american_scientific_journal-3702 21 3 of of ADP american_scientific_journal-3702 21 4 lpda lpda NOUN american_scientific_journal-3702 21 5 structure structure NOUN american_scientific_journal-3702 21 6 and and CCONJ american_scientific_journal-3702 21 7 the the DET american_scientific_journal-3702 21 8 phase phase NOUN american_scientific_journal-3702 21 9 center center NOUN american_scientific_journal-3702 21 10 change change NOUN american_scientific_journal-3702 21 11 on on ADP american_scientific_journal-3702 21 12 gain gain NOUN american_scientific_journal-3702 21 13 was be AUX american_scientific_journal-3702 21 14 observed observe VERB american_scientific_journal-3702 21 15 . . PUNCT american_scientific_journal-3702 22 1 parabolic parabolic ADJ american_scientific_journal-3702 22 2 reflector reflector NOUN american_scientific_journal-3702 22 3 fed feed VERB american_scientific_journal-3702 22 4 with with ADP american_scientific_journal-3702 22 5 an an DET american_scientific_journal-3702 22 6 lpda lpda NOUN american_scientific_journal-3702 22 7 at at ADP american_scientific_journal-3702 22 8 1 1 NUM american_scientific_journal-3702 22 9 - - SYM american_scientific_journal-3702 22 10 7 7 NUM american_scientific_journal-3702 22 11 ghz ghz NOUN american_scientific_journal-3702 22 12 frequency frequency NOUN american_scientific_journal-3702 22 13 band band NOUN american_scientific_journal-3702 22 14 was be AUX american_scientific_journal-3702 22 15 shown show VERB american_scientific_journal-3702 22 16 in in ADP american_scientific_journal-3702 22 17 [ [ X american_scientific_journal-3702 22 18 10 10 NUM american_scientific_journal-3702 22 19 ] ] PUNCT american_scientific_journal-3702 22 20 , , PUNCT american_scientific_journal-3702 22 21 where where SCONJ american_scientific_journal-3702 22 22 the the DET american_scientific_journal-3702 22 23 ratio ratio NOUN american_scientific_journal-3702 22 24 of of ADP american_scientific_journal-3702 22 25 focal focal ADJ american_scientific_journal-3702 22 26 length length NOUN american_scientific_journal-3702 22 27 to to ADP american_scientific_journal-3702 22 28 diameter diameter NOUN american_scientific_journal-3702 22 29 was be AUX american_scientific_journal-3702 22 30 0.4 0.4 NUM american_scientific_journal-3702 22 31 . . PUNCT american_scientific_journal-3702 23 1 it it PRON american_scientific_journal-3702 23 2 is be AUX american_scientific_journal-3702 23 3 evident evident ADJ american_scientific_journal-3702 23 4 in in ADP american_scientific_journal-3702 23 5 many many ADJ american_scientific_journal-3702 23 6 of of ADP american_scientific_journal-3702 23 7 these these DET american_scientific_journal-3702 23 8 prior prior ADJ american_scientific_journal-3702 23 9 works work NOUN american_scientific_journal-3702 23 10 that that DET american_scientific_journal-3702 23 11 phase phase NOUN american_scientific_journal-3702 23 12 center center NOUN american_scientific_journal-3702 23 13 fluctuation fluctuation NOUN american_scientific_journal-3702 23 14 greatly greatly ADV american_scientific_journal-3702 23 15 influences influence VERB american_scientific_journal-3702 23 16 antenna antenna NOUN american_scientific_journal-3702 23 17 gain gain NOUN american_scientific_journal-3702 23 18 , , PUNCT american_scientific_journal-3702 23 19 and and CCONJ american_scientific_journal-3702 23 20 more more ADV american_scientific_journal-3702 23 21 importantly importantly ADV american_scientific_journal-3702 23 22 , , PUNCT american_scientific_journal-3702 23 23 its its PRON american_scientific_journal-3702 23 24 radiation radiation NOUN american_scientific_journal-3702 23 25 pattern pattern NOUN american_scientific_journal-3702 23 26 . . PUNCT american_scientific_journal-3702 24 1 to to PART american_scientific_journal-3702 24 2 minimize minimize VERB american_scientific_journal-3702 24 3 phase phase NOUN american_scientific_journal-3702 24 4 center center NOUN american_scientific_journal-3702 24 5 variation variation NOUN american_scientific_journal-3702 24 6 , , PUNCT american_scientific_journal-3702 24 7 lpda lpda NOUN american_scientific_journal-3702 24 8 and and CCONJ american_scientific_journal-3702 24 9 reflector reflector NOUN american_scientific_journal-3702 24 10 design design NOUN american_scientific_journal-3702 24 11 was be AUX american_scientific_journal-3702 24 12 optimized optimize VERB american_scientific_journal-3702 24 13 together together ADV american_scientific_journal-3702 24 14 in in ADP american_scientific_journal-3702 24 15 [ [ X american_scientific_journal-3702 24 16 11 11 NUM american_scientific_journal-3702 24 17 ] ] PUNCT american_scientific_journal-3702 24 18 , , PUNCT american_scientific_journal-3702 24 19 however however ADV american_scientific_journal-3702 24 20 , , PUNCT american_scientific_journal-3702 24 21 it it PRON american_scientific_journal-3702 24 22 was be AUX american_scientific_journal-3702 24 23 realized realize VERB american_scientific_journal-3702 24 24 that that SCONJ american_scientific_journal-3702 24 25 further further ADJ american_scientific_journal-3702 24 26 parameters parameter NOUN american_scientific_journal-3702 24 27 such such ADJ american_scientific_journal-3702 24 28 as as ADP american_scientific_journal-3702 24 29 side side NOUN american_scientific_journal-3702 24 30 - - PUNCT american_scientific_journal-3702 24 31 lobe lobe NOUN american_scientific_journal-3702 24 32 level level NOUN american_scientific_journal-3702 24 33 ( ( PUNCT american_scientific_journal-3702 24 34 sll sll PROPN american_scientific_journal-3702 24 35 ) ) PUNCT american_scientific_journal-3702 24 36 and and CCONJ american_scientific_journal-3702 24 37 half half ADJ american_scientific_journal-3702 24 38 power power NOUN american_scientific_journal-3702 24 39 bandwidth bandwidth NOUN american_scientific_journal-3702 24 40 ( ( PUNCT american_scientific_journal-3702 24 41 hpbw hpbw PROPN american_scientific_journal-3702 24 42 ) ) PUNCT american_scientific_journal-3702 24 43 were be AUX american_scientific_journal-3702 24 44 also also ADV american_scientific_journal-3702 24 45 needed need VERB american_scientific_journal-3702 24 46 to to PART american_scientific_journal-3702 24 47 be be AUX american_scientific_journal-3702 24 48 considered consider VERB american_scientific_journal-3702 24 49 in in ADP american_scientific_journal-3702 24 50 the the DET american_scientific_journal-3702 24 51 optimization optimization NOUN american_scientific_journal-3702 24 52 . . PUNCT american_scientific_journal-3702 25 1 in in ADP american_scientific_journal-3702 25 2 this this DET american_scientific_journal-3702 25 3 study study NOUN american_scientific_journal-3702 25 4 , , PUNCT american_scientific_journal-3702 25 5 firstly firstly ADV american_scientific_journal-3702 25 6 printed print VERB american_scientific_journal-3702 25 7 lpda lpda NOUN american_scientific_journal-3702 25 8 is be AUX american_scientific_journal-3702 25 9 designed design VERB american_scientific_journal-3702 25 10 and and CCONJ american_scientific_journal-3702 25 11 optimized optimize VERB american_scientific_journal-3702 25 12 for for ADP american_scientific_journal-3702 25 13 the the DET american_scientific_journal-3702 25 14 optimum optimum ADJ american_scientific_journal-3702 25 15 broadband broadband NOUN american_scientific_journal-3702 25 16 phase phase NOUN american_scientific_journal-3702 25 17 center center NOUN american_scientific_journal-3702 25 18 , , PUNCT american_scientific_journal-3702 25 19 low low ADJ american_scientific_journal-3702 25 20 return return NOUN american_scientific_journal-3702 25 21 loss loss NOUN american_scientific_journal-3702 25 22 , , PUNCT american_scientific_journal-3702 25 23 stable stable ADJ american_scientific_journal-3702 25 24 hpbw hpbw NOUN american_scientific_journal-3702 25 25 and and CCONJ american_scientific_journal-3702 25 26 uniform uniform ADJ american_scientific_journal-3702 25 27 gain gain NOUN american_scientific_journal-3702 25 28 in in ADP american_scientific_journal-3702 25 29 the the DET american_scientific_journal-3702 25 30 desired desire VERB american_scientific_journal-3702 25 31 frequency frequency NOUN american_scientific_journal-3702 25 32 band band NOUN american_scientific_journal-3702 25 33 . . PUNCT american_scientific_journal-3702 26 1 then then ADV american_scientific_journal-3702 26 2 , , PUNCT american_scientific_journal-3702 26 3 designed design VERB american_scientific_journal-3702 26 4 printed print VERB american_scientific_journal-3702 26 5 lpda lpda NOUN american_scientific_journal-3702 26 6 is be AUX american_scientific_journal-3702 26 7 used use VERB american_scientific_journal-3702 26 8 as as ADP american_scientific_journal-3702 26 9 prime prime ADJ american_scientific_journal-3702 26 10 - - PUNCT american_scientific_journal-3702 26 11 focus focus NOUN american_scientific_journal-3702 26 12 feed feed NOUN american_scientific_journal-3702 26 13 to to PART american_scientific_journal-3702 26 14 increase increase VERB american_scientific_journal-3702 26 15 the the DET american_scientific_journal-3702 26 16 gain gain NOUN american_scientific_journal-3702 26 17 with with ADP american_scientific_journal-3702 26 18 attention attention NOUN american_scientific_journal-3702 26 19 to to ADP american_scientific_journal-3702 26 20 sll sll PROPN american_scientific_journal-3702 26 21 , , PUNCT american_scientific_journal-3702 26 22 front front NOUN american_scientific_journal-3702 26 23 - - PUNCT american_scientific_journal-3702 26 24 to to ADP american_scientific_journal-3702 26 25 - - PUNCT american_scientific_journal-3702 26 26 back back NOUN american_scientific_journal-3702 26 27 ratio ratio NOUN american_scientific_journal-3702 26 28 , , PUNCT american_scientific_journal-3702 26 29 return return VERB american_scientific_journal-3702 26 30 loss loss NOUN american_scientific_journal-3702 26 31 , , PUNCT american_scientific_journal-3702 26 32 and and CCONJ american_scientific_journal-3702 26 33 hpbw hpbw NOUN american_scientific_journal-3702 26 34 . . PUNCT american_scientific_journal-3702 27 1 when when SCONJ american_scientific_journal-3702 27 2 the the DET american_scientific_journal-3702 27 3 lpda lpda NOUN american_scientific_journal-3702 27 4 is be AUX american_scientific_journal-3702 27 5 in in ADP american_scientific_journal-3702 27 6 front front NOUN american_scientific_journal-3702 27 7 of of ADP american_scientific_journal-3702 27 8 the the DET american_scientific_journal-3702 27 9 reflector reflector NOUN american_scientific_journal-3702 27 10 antenna antenna NOUN american_scientific_journal-3702 27 11 , , PUNCT american_scientific_journal-3702 27 12 vswr vswr VERB american_scientific_journal-3702 27 13 of of ADP american_scientific_journal-3702 27 14 the the DET american_scientific_journal-3702 27 15 lpda lpda NOUN american_scientific_journal-3702 27 16 slightly slightly ADV american_scientific_journal-3702 27 17 deteriorates deteriorate VERB american_scientific_journal-3702 27 18 due due ADP american_scientific_journal-3702 27 19 to to ADP american_scientific_journal-3702 27 20 the the DET american_scientific_journal-3702 27 21 near near ADJ american_scientific_journal-3702 27 22 field field NOUN american_scientific_journal-3702 27 23 coupling coupling NOUN american_scientific_journal-3702 27 24 and and CCONJ american_scientific_journal-3702 27 25 defocusing defocuse VERB american_scientific_journal-3702 27 26 effect effect NOUN american_scientific_journal-3702 27 27 . . PUNCT american_scientific_journal-3702 28 1 this this PRON american_scientific_journal-3702 28 2 is be AUX american_scientific_journal-3702 28 3 minimized minimize VERB american_scientific_journal-3702 28 4 with with ADP american_scientific_journal-3702 28 5 the the DET american_scientific_journal-3702 28 6 optimization optimization NOUN american_scientific_journal-3702 28 7 of of ADP american_scientific_journal-3702 28 8 lpda lpda NOUN american_scientific_journal-3702 28 9 and and CCONJ american_scientific_journal-3702 28 10 reflector reflector NOUN american_scientific_journal-3702 28 11 geometry geometry NOUN american_scientific_journal-3702 28 12 . . PUNCT american_scientific_journal-3702 29 1 in in ADP american_scientific_journal-3702 29 2 section section NOUN american_scientific_journal-3702 29 3 2 2 NUM american_scientific_journal-3702 29 4 , , PUNCT american_scientific_journal-3702 29 5 we we PRON american_scientific_journal-3702 29 6 present present VERB american_scientific_journal-3702 29 7 lpda lpda NOUN american_scientific_journal-3702 29 8 and and CCONJ american_scientific_journal-3702 29 9 reflector reflector NOUN american_scientific_journal-3702 29 10 antenna antenna NOUN american_scientific_journal-3702 29 11 design design NOUN american_scientific_journal-3702 29 12 . . PUNCT american_scientific_journal-3702 30 1 in in ADP american_scientific_journal-3702 30 2 section section NOUN american_scientific_journal-3702 30 3 3 3 NUM american_scientific_journal-3702 30 4 , , PUNCT american_scientific_journal-3702 30 5 simulation simulation NOUN american_scientific_journal-3702 30 6 results result NOUN american_scientific_journal-3702 30 7 using use VERB american_scientific_journal-3702 30 8 cst cst PROPN american_scientific_journal-3702 30 9 microwave microwave PROPN american_scientific_journal-3702 30 10 studio studio PROPN american_scientific_journal-3702 31 1 [ [ X american_scientific_journal-3702 31 2 12 12 NUM american_scientific_journal-3702 31 3 ] ] PUNCT american_scientific_journal-3702 31 4 are be AUX american_scientific_journal-3702 31 5 detailed detail VERB american_scientific_journal-3702 31 6 . . PUNCT american_scientific_journal-3702 32 1 conclusions conclusion NOUN american_scientific_journal-3702 32 2 are be AUX american_scientific_journal-3702 32 3 given give VERB american_scientific_journal-3702 32 4 in in ADP american_scientific_journal-3702 32 5 the the DET american_scientific_journal-3702 32 6 final final ADJ american_scientific_journal-3702 32 7 section section NOUN american_scientific_journal-3702 32 8 . . PUNCT american_scientific_journal-3702 33 1 2 2 X american_scientific_journal-3702 33 2 . . X american_scientific_journal-3702 33 3 design design NOUN american_scientific_journal-3702 33 4 of of ADP american_scientific_journal-3702 33 5 the the DET american_scientific_journal-3702 33 6 antenna antenna NOUN american_scientific_journal-3702 33 7 2.1 2.1 NUM american_scientific_journal-3702 33 8 . . PUNCT american_scientific_journal-3702 34 1 design design NOUN american_scientific_journal-3702 34 2 of of ADP american_scientific_journal-3702 34 3 lpda lpda NOUN american_scientific_journal-3702 34 4 the the DET american_scientific_journal-3702 34 5 design design NOUN american_scientific_journal-3702 34 6 follows follow VERB american_scientific_journal-3702 34 7 the the DET american_scientific_journal-3702 34 8 basic basic ADJ american_scientific_journal-3702 34 9 approach approach NOUN american_scientific_journal-3702 34 10 presented present VERB american_scientific_journal-3702 34 11 in in ADP american_scientific_journal-3702 34 12 [ [ PUNCT american_scientific_journal-3702 34 13 13 13 NUM american_scientific_journal-3702 34 14 - - SYM american_scientific_journal-3702 34 15 14 14 NUM american_scientific_journal-3702 34 16 ] ] PUNCT american_scientific_journal-3702 34 17 . . PUNCT american_scientific_journal-3702 35 1 the the DET american_scientific_journal-3702 35 2 length length NOUN american_scientific_journal-3702 35 3 of of ADP american_scientific_journal-3702 35 4 the the DET american_scientific_journal-3702 35 5 smallest small ADJ american_scientific_journal-3702 35 6 and and CCONJ american_scientific_journal-3702 35 7 largest large ADJ american_scientific_journal-3702 35 8 dipole dipole NOUN american_scientific_journal-3702 35 9 is be AUX american_scientific_journal-3702 35 10 inversely inversely ADV american_scientific_journal-3702 35 11 proportional proportional ADJ american_scientific_journal-3702 35 12 to to ADP american_scientific_journal-3702 35 13 maximum maximum ADJ american_scientific_journal-3702 35 14 and and CCONJ american_scientific_journal-3702 35 15 the the DET american_scientific_journal-3702 35 16 minimum minimum ADJ american_scientific_journal-3702 35 17 frequency frequency NOUN american_scientific_journal-3702 35 18 . . PUNCT american_scientific_journal-3702 36 1 after after ADP american_scientific_journal-3702 36 2 calculating calculate VERB american_scientific_journal-3702 36 3 the the DET american_scientific_journal-3702 36 4 first first ADJ american_scientific_journal-3702 36 5 and and CCONJ american_scientific_journal-3702 36 6 the the DET american_scientific_journal-3702 36 7 last last ADJ american_scientific_journal-3702 36 8 dipole dipole NOUN american_scientific_journal-3702 36 9 of of ADP american_scientific_journal-3702 36 10 the the DET american_scientific_journal-3702 36 11 structure structure NOUN american_scientific_journal-3702 36 12 , , PUNCT american_scientific_journal-3702 36 13 other other ADJ american_scientific_journal-3702 36 14 dimensions dimension NOUN american_scientific_journal-3702 36 15 are be AUX american_scientific_journal-3702 36 16 calculated calculate VERB american_scientific_journal-3702 36 17 using use VERB american_scientific_journal-3702 36 18 geometrical geometrical ADJ american_scientific_journal-3702 36 19 scaling scale VERB american_scientific_journal-3702 36 20 factor factor NOUN american_scientific_journal-3702 36 21 ( ( PUNCT american_scientific_journal-3702 36 22 Ο„ Ο„ PROPN american_scientific_journal-3702 36 23 ) ) PUNCT american_scientific_journal-3702 36 24 as as SCONJ american_scientific_journal-3702 36 25 shown show VERB american_scientific_journal-3702 36 26 in in ADP american_scientific_journal-3702 36 27 the the DET american_scientific_journal-3702 36 28 following following NOUN american_scientific_journal-3702 36 29 , , PUNCT american_scientific_journal-3702 36 30 𝜏𝜏 𝜏𝜏 ADJ american_scientific_journal-3702 36 31 = = NOUN american_scientific_journal-3702 36 32 π‘™π‘™π‘šπ‘š π‘™π‘™π‘šπ‘š NOUN american_scientific_journal-3702 36 33 π‘™π‘™π‘šπ‘š+1 π‘™π‘™π‘šπ‘š+1 NOUN american_scientific_journal-3702 36 34 = = PUNCT american_scientific_journal-3702 36 35 π‘†π‘†π‘šπ‘š π‘†π‘†π‘šπ‘š PROPN american_scientific_journal-3702 36 36 π‘†π‘†π‘šπ‘š+1 π‘†π‘†π‘šπ‘š+1 VERB american_scientific_journal-3702 36 37 = = PUNCT american_scientific_journal-3702 37 1 π‘€π‘€π‘šπ‘š π‘€π‘€π‘šπ‘š ADJ american_scientific_journal-3702 37 2 π‘€π‘€π‘šπ‘š+1 π‘€π‘€π‘šπ‘š+1 PROPN american_scientific_journal-3702 37 3 ( ( PUNCT american_scientific_journal-3702 37 4 1 1 X american_scientific_journal-3702 37 5 ) ) PUNCT american_scientific_journal-3702 37 6 the the DET american_scientific_journal-3702 37 7 dimensions dimension NOUN american_scientific_journal-3702 37 8 of of ADP american_scientific_journal-3702 37 9 the the DET american_scientific_journal-3702 37 10 antenna antenna NOUN american_scientific_journal-3702 37 11 are be AUX american_scientific_journal-3702 37 12 shown show VERB american_scientific_journal-3702 37 13 in in ADP american_scientific_journal-3702 37 14 figure figure NOUN american_scientific_journal-3702 37 15 1 1 NUM american_scientific_journal-3702 37 16 . . PUNCT american_scientific_journal-3702 38 1 the the DET american_scientific_journal-3702 38 2 width width NOUN american_scientific_journal-3702 38 3 of of ADP american_scientific_journal-3702 38 4 the the DET american_scientific_journal-3702 38 5 dipole dipole NOUN american_scientific_journal-3702 38 6 and and CCONJ american_scientific_journal-3702 38 7 spacing spacing NOUN american_scientific_journal-3702 38 8 between between ADP american_scientific_journal-3702 38 9 elements element NOUN american_scientific_journal-3702 38 10 also also ADV american_scientific_journal-3702 38 11 change change VERB american_scientific_journal-3702 38 12 logarithmically logarithmically ADV american_scientific_journal-3702 38 13 as as ADP american_scientific_journal-3702 38 14 the the DET american_scientific_journal-3702 38 15 length length NOUN american_scientific_journal-3702 38 16 of of ADP american_scientific_journal-3702 38 17 dipoles dipole NOUN american_scientific_journal-3702 38 18 . . PUNCT american_scientific_journal-3702 39 1 the the DET american_scientific_journal-3702 39 2 angle angle NOUN american_scientific_journal-3702 39 3 shown show VERB american_scientific_journal-3702 39 4 in in ADP american_scientific_journal-3702 39 5 the the DET american_scientific_journal-3702 39 6 figure figure NOUN american_scientific_journal-3702 39 7 is be AUX american_scientific_journal-3702 39 8 fixed fix VERB american_scientific_journal-3702 39 9 because because SCONJ american_scientific_journal-3702 39 10 the the DET american_scientific_journal-3702 39 11 lengths length NOUN american_scientific_journal-3702 39 12 of of ADP american_scientific_journal-3702 39 13 the the DET american_scientific_journal-3702 39 14 dipoles dipole NOUN american_scientific_journal-3702 39 15 decrease decrease NOUN american_scientific_journal-3702 39 16 with with ADP american_scientific_journal-3702 39 17 scaling scaling ADJ american_scientific_journal-3702 39 18 factor factor NOUN american_scientific_journal-3702 39 19 as as ADP american_scientific_journal-3702 39 20 , , PUNCT american_scientific_journal-3702 39 21 tan𝛼𝛼 tan𝛼𝛼 NOUN american_scientific_journal-3702 39 22 = = SYM american_scientific_journal-3702 39 23 ( ( PUNCT american_scientific_journal-3702 39 24 π‘™π‘™π‘šπ‘š+1βˆ’π‘™π‘™π‘šπ‘š)/2 π‘™π‘™π‘šπ‘š+1βˆ’π‘™π‘™π‘šπ‘š)/2 ADP american_scientific_journal-3702 39 25 𝑠𝑠 𝑠𝑠 ADV american_scientific_journal-3702 39 26 ( ( PUNCT american_scientific_journal-3702 39 27 2 2 X american_scientific_journal-3702 39 28 ) ) PUNCT american_scientific_journal-3702 39 29 american american ADJ american_scientific_journal-3702 39 30 scientific scientific ADJ american_scientific_journal-3702 39 31 research research NOUN american_scientific_journal-3702 39 32 journal journal NOUN american_scientific_journal-3702 39 33 for for ADP american_scientific_journal-3702 39 34 engineering engineering NOUN american_scientific_journal-3702 39 35 , , PUNCT american_scientific_journal-3702 39 36 technology technology NOUN american_scientific_journal-3702 39 37 , , PUNCT american_scientific_journal-3702 39 38 and and CCONJ american_scientific_journal-3702 39 39 sciences science NOUN american_scientific_journal-3702 39 40 ( ( PUNCT american_scientific_journal-3702 39 41 asrjets asrjet NOUN american_scientific_journal-3702 39 42 ) ) PUNCT american_scientific_journal-3702 39 43 ( ( PUNCT american_scientific_journal-3702 39 44 2017 2017 NUM american_scientific_journal-3702 39 45 ) ) PUNCT american_scientific_journal-3702 39 46 volume volume NOUN american_scientific_journal-3702 39 47 38 38 NUM american_scientific_journal-3702 39 48 , , PUNCT american_scientific_journal-3702 39 49 no no DET american_scientific_journal-3702 39 50 2 2 NUM american_scientific_journal-3702 39 51 , , PUNCT american_scientific_journal-3702 39 52 pp pp ADV american_scientific_journal-3702 39 53 252 252 NUM american_scientific_journal-3702 39 54 - - SYM american_scientific_journal-3702 39 55 261 261 NUM american_scientific_journal-3702 39 56 254 254 NUM american_scientific_journal-3702 39 57 figure figure NOUN american_scientific_journal-3702 39 58 1 1 NUM american_scientific_journal-3702 39 59 : : PUNCT american_scientific_journal-3702 39 60 lpda lpda NOUN american_scientific_journal-3702 39 61 structure structure NOUN american_scientific_journal-3702 39 62 ( ( PUNCT american_scientific_journal-3702 39 63 gray gray ADJ american_scientific_journal-3702 39 64 : : PUNCT american_scientific_journal-3702 39 65 top top ADJ american_scientific_journal-3702 39 66 side side NOUN american_scientific_journal-3702 39 67 , , PUNCT american_scientific_journal-3702 39 68 yellow yellow ADJ american_scientific_journal-3702 39 69 : : PUNCT american_scientific_journal-3702 39 70 bottom bottom ADJ american_scientific_journal-3702 39 71 side side NOUN american_scientific_journal-3702 39 72 ) ) PUNCT american_scientific_journal-3702 39 73 . . PUNCT american_scientific_journal-3702 40 1 the the DET american_scientific_journal-3702 40 2 number number NOUN american_scientific_journal-3702 40 3 of of ADP american_scientific_journal-3702 40 4 dipoles dipole NOUN american_scientific_journal-3702 40 5 affects affect VERB american_scientific_journal-3702 40 6 positively positively ADV american_scientific_journal-3702 40 7 the the DET american_scientific_journal-3702 40 8 bandwidth bandwidth NOUN american_scientific_journal-3702 40 9 and and CCONJ american_scientific_journal-3702 40 10 the the DET american_scientific_journal-3702 40 11 gain gain NOUN american_scientific_journal-3702 40 12 , , PUNCT american_scientific_journal-3702 40 13 but but CCONJ american_scientific_journal-3702 40 14 the the DET american_scientific_journal-3702 40 15 size size NOUN american_scientific_journal-3702 40 16 of of ADP american_scientific_journal-3702 40 17 the the DET american_scientific_journal-3702 40 18 antenna antenna NOUN american_scientific_journal-3702 40 19 grows grow VERB american_scientific_journal-3702 40 20 . . PUNCT american_scientific_journal-3702 41 1 lpda lpda NOUN american_scientific_journal-3702 41 2 antenna antenna NOUN american_scientific_journal-3702 41 3 is be AUX american_scientific_journal-3702 41 4 fed feed VERB american_scientific_journal-3702 41 5 near near ADP american_scientific_journal-3702 41 6 the the DET american_scientific_journal-3702 41 7 shortest short ADJ american_scientific_journal-3702 41 8 dipole dipole NOUN american_scientific_journal-3702 41 9 . . PUNCT american_scientific_journal-3702 42 1 the the DET american_scientific_journal-3702 42 2 line line NOUN american_scientific_journal-3702 42 3 feed feed NOUN american_scientific_journal-3702 42 4 on on ADP american_scientific_journal-3702 42 5 both both DET american_scientific_journal-3702 42 6 sides side NOUN american_scientific_journal-3702 42 7 of of ADP american_scientific_journal-3702 42 8 substrate substrate NOUN american_scientific_journal-3702 42 9 has have VERB american_scientific_journal-3702 42 10 50 50 NUM american_scientific_journal-3702 42 11 ohm ohm NOUN american_scientific_journal-3702 42 12 impedance impedance NOUN american_scientific_journal-3702 42 13 . . PUNCT american_scientific_journal-3702 43 1 rogers rogers PROPN american_scientific_journal-3702 43 2 5880 5880 NUM american_scientific_journal-3702 43 3 dielectric dielectric ADJ american_scientific_journal-3702 43 4 substrate substrate NOUN american_scientific_journal-3702 43 5 is be AUX american_scientific_journal-3702 43 6 selected select VERB american_scientific_journal-3702 43 7 for for ADP american_scientific_journal-3702 43 8 the the DET american_scientific_journal-3702 43 9 printed print VERB american_scientific_journal-3702 43 10 lpda lpda NOUN american_scientific_journal-3702 43 11 . . PUNCT american_scientific_journal-3702 44 1 relative relative ADJ american_scientific_journal-3702 44 2 permittivity permittivity NOUN american_scientific_journal-3702 44 3 of of ADP american_scientific_journal-3702 44 4 this this DET american_scientific_journal-3702 44 5 substrate substrate NOUN american_scientific_journal-3702 44 6 is be AUX american_scientific_journal-3702 44 7 2.2 2.2 NUM american_scientific_journal-3702 44 8 and and CCONJ american_scientific_journal-3702 44 9 its its PRON american_scientific_journal-3702 44 10 thickness thickness NOUN american_scientific_journal-3702 44 11 is be AUX american_scientific_journal-3702 44 12 0.762 0.762 NUM american_scientific_journal-3702 44 13 mm mm NOUN american_scientific_journal-3702 44 14 . . PUNCT american_scientific_journal-3702 45 1 the the DET american_scientific_journal-3702 45 2 lengths length NOUN american_scientific_journal-3702 45 3 of of ADP american_scientific_journal-3702 45 4 the the DET american_scientific_journal-3702 45 5 largest large ADJ american_scientific_journal-3702 45 6 and and CCONJ american_scientific_journal-3702 45 7 the the DET american_scientific_journal-3702 45 8 smallest small ADJ american_scientific_journal-3702 45 9 dipoles dipole NOUN american_scientific_journal-3702 45 10 are be AUX american_scientific_journal-3702 45 11 177 177 NUM american_scientific_journal-3702 45 12 mm mm NOUN american_scientific_journal-3702 45 13 and and CCONJ american_scientific_journal-3702 45 14 5.11 5.11 NUM american_scientific_journal-3702 45 15 mm mm NOUN american_scientific_journal-3702 45 16 , , PUNCT american_scientific_journal-3702 45 17 respectively respectively ADV american_scientific_journal-3702 45 18 . . PUNCT american_scientific_journal-3702 46 1 the the DET american_scientific_journal-3702 46 2 minimum minimum ADJ american_scientific_journal-3702 46 3 dipole dipole NOUN american_scientific_journal-3702 46 4 width width NOUN american_scientific_journal-3702 46 5 is be AUX american_scientific_journal-3702 46 6 chosen choose VERB american_scientific_journal-3702 46 7 0.5 0.5 NUM american_scientific_journal-3702 46 8 mm mm NOUN american_scientific_journal-3702 46 9 . . PUNCT american_scientific_journal-3702 47 1 optimal optimal ADJ american_scientific_journal-3702 47 2 geometrical geometrical ADJ american_scientific_journal-3702 47 3 scaling scale VERB american_scientific_journal-3702 47 4 factor factor NOUN american_scientific_journal-3702 47 5 of of ADP american_scientific_journal-3702 47 6 this this DET american_scientific_journal-3702 47 7 design design NOUN american_scientific_journal-3702 47 8 is be AUX american_scientific_journal-3702 47 9 selected select VERB american_scientific_journal-3702 47 10 as as ADP american_scientific_journal-3702 47 11 0.85 0.85 NUM american_scientific_journal-3702 47 12 and and CCONJ american_scientific_journal-3702 47 13 Ξ± Ξ± NOUN american_scientific_journal-3702 47 14 is be AUX american_scientific_journal-3702 47 15 15.16 15.16 NUM american_scientific_journal-3702 47 16 degree degree NOUN american_scientific_journal-3702 47 17 . . PUNCT american_scientific_journal-3702 48 1 so so ADV american_scientific_journal-3702 48 2 the the DET american_scientific_journal-3702 48 3 total total ADJ american_scientific_journal-3702 48 4 size size NOUN american_scientific_journal-3702 48 5 of of ADP american_scientific_journal-3702 48 6 the the DET american_scientific_journal-3702 48 7 lpda lpda NOUN american_scientific_journal-3702 48 8 which which PRON american_scientific_journal-3702 48 9 has have VERB american_scientific_journal-3702 48 10 23 23 NUM american_scientific_journal-3702 48 11 half half NOUN american_scientific_journal-3702 48 12 wavelength wavelength NOUN american_scientific_journal-3702 48 13 dipoles dipole NOUN american_scientific_journal-3702 48 14 is be AUX american_scientific_journal-3702 48 15 218 218 NUM american_scientific_journal-3702 48 16 mm mm NOUN american_scientific_journal-3702 48 17 x x SYM american_scientific_journal-3702 48 18 350.66 350.66 NUM american_scientific_journal-3702 48 19 mm mm NOUN american_scientific_journal-3702 48 20 x x SYM american_scientific_journal-3702 48 21 0.62 0.62 NUM american_scientific_journal-3702 48 22 mm mm NOUN american_scientific_journal-3702 48 23 . . PROPN american_scientific_journal-3702 48 24 optimized optimize VERB american_scientific_journal-3702 48 25 printed print VERB american_scientific_journal-3702 48 26 lpda lpda NOUN american_scientific_journal-3702 48 27 structure structure NOUN american_scientific_journal-3702 48 28 is be AUX american_scientific_journal-3702 48 29 shown show VERB american_scientific_journal-3702 48 30 in in ADP american_scientific_journal-3702 48 31 figure figure NOUN american_scientific_journal-3702 48 32 2 2 NUM american_scientific_journal-3702 48 33 . . PUNCT american_scientific_journal-3702 48 34 figure figure NOUN american_scientific_journal-3702 48 35 2 2 NUM american_scientific_journal-3702 48 36 : : PUNCT american_scientific_journal-3702 48 37 designed design VERB american_scientific_journal-3702 48 38 lpda lpda NOUN american_scientific_journal-3702 48 39 dimensions dimension NOUN american_scientific_journal-3702 48 40 ( ( PUNCT american_scientific_journal-3702 48 41 red red ADJ american_scientific_journal-3702 48 42 points point NOUN american_scientific_journal-3702 48 43 from from ADP american_scientific_journal-3702 48 44 left leave VERB american_scientific_journal-3702 48 45 to to ADP american_scientific_journal-3702 48 46 right right ADJ american_scientific_journal-3702 48 47 shows show NOUN american_scientific_journal-3702 48 48 phase phase NOUN american_scientific_journal-3702 48 49 centers center NOUN american_scientific_journal-3702 48 50 from from ADP american_scientific_journal-3702 48 51 1 1 NUM american_scientific_journal-3702 48 52 ghz ghz NOUN american_scientific_journal-3702 48 53 to to ADP american_scientific_journal-3702 48 54 19 19 NUM american_scientific_journal-3702 48 55 ghz ghz NOUN american_scientific_journal-3702 48 56 with with ADP american_scientific_journal-3702 48 57 1 1 NUM american_scientific_journal-3702 48 58 ghz ghz NOUN american_scientific_journal-3702 48 59 separation separation NOUN american_scientific_journal-3702 48 60 ) ) PUNCT american_scientific_journal-3702 48 61 . . PUNCT american_scientific_journal-3702 49 1 fractional fractional ADJ american_scientific_journal-3702 49 2 bandwidth bandwidth NOUN american_scientific_journal-3702 49 3 of of ADP american_scientific_journal-3702 49 4 this this DET american_scientific_journal-3702 49 5 lpda lpda NOUN american_scientific_journal-3702 49 6 is be AUX american_scientific_journal-3702 49 7 % % NOUN american_scientific_journal-3702 49 8 180 180 NUM american_scientific_journal-3702 49 9 , , PUNCT american_scientific_journal-3702 49 10 and and CCONJ american_scientific_journal-3702 49 11 has have VERB american_scientific_journal-3702 49 12 more more ADJ american_scientific_journal-3702 49 13 than than ADP american_scientific_journal-3702 49 14 500 500 NUM american_scientific_journal-3702 49 15 mhz mhz ADJ american_scientific_journal-3702 49 16 frequency frequency NOUN american_scientific_journal-3702 49 17 band band NOUN american_scientific_journal-3702 49 18 to to PART american_scientific_journal-3702 49 19 qualify qualify VERB american_scientific_journal-3702 49 20 for for ADP american_scientific_journal-3702 49 21 ultrawideband ultrawideband NOUN american_scientific_journal-3702 49 22 description description NOUN american_scientific_journal-3702 49 23 . . PUNCT american_scientific_journal-3702 50 1 the the DET american_scientific_journal-3702 50 2 main main ADJ american_scientific_journal-3702 50 3 disadvantage disadvantage NOUN american_scientific_journal-3702 50 4 of of ADP american_scientific_journal-3702 50 5 uwb uwb NOUN american_scientific_journal-3702 50 6 antennas antenna NOUN american_scientific_journal-3702 50 7 is be AUX american_scientific_journal-3702 50 8 that that SCONJ american_scientific_journal-3702 50 9 the the DET american_scientific_journal-3702 50 10 phase phase NOUN american_scientific_journal-3702 50 11 centers center NOUN american_scientific_journal-3702 50 12 are be AUX american_scientific_journal-3702 50 13 variable variable ADJ american_scientific_journal-3702 50 14 . . PUNCT american_scientific_journal-3702 51 1 therefore therefore ADV american_scientific_journal-3702 51 2 , , PUNCT american_scientific_journal-3702 51 3 it it PRON american_scientific_journal-3702 51 4 is be AUX american_scientific_journal-3702 51 5 difficult difficult ADJ american_scientific_journal-3702 51 6 to to PART american_scientific_journal-3702 51 7 use use VERB american_scientific_journal-3702 51 8 them they PRON american_scientific_journal-3702 51 9 as as ADP american_scientific_journal-3702 51 10 a a DET american_scientific_journal-3702 51 11 feed feed NOUN american_scientific_journal-3702 51 12 for for ADP american_scientific_journal-3702 51 13 reflector reflector NOUN american_scientific_journal-3702 51 14 antenna antenna NOUN american_scientific_journal-3702 51 15 systems system NOUN american_scientific_journal-3702 51 16 . . PUNCT american_scientific_journal-3702 52 1 hence hence ADV american_scientific_journal-3702 52 2 , , PUNCT american_scientific_journal-3702 52 3 one one NUM american_scientific_journal-3702 52 4 of of ADP american_scientific_journal-3702 52 5 the the DET american_scientific_journal-3702 52 6 most most ADV american_scientific_journal-3702 52 7 important important ADJ american_scientific_journal-3702 52 8 parameters parameter NOUN american_scientific_journal-3702 52 9 in in ADP american_scientific_journal-3702 52 10 optimizing optimize VERB american_scientific_journal-3702 52 11 the the DET american_scientific_journal-3702 52 12 antenna antenna NOUN american_scientific_journal-3702 52 13 is be AUX american_scientific_journal-3702 52 14 the the DET american_scientific_journal-3702 52 15 stabilization stabilization NOUN american_scientific_journal-3702 52 16 of of ADP american_scientific_journal-3702 52 17 phase phase NOUN american_scientific_journal-3702 52 18 centers center NOUN american_scientific_journal-3702 52 19 . . PUNCT american_scientific_journal-3702 53 1 american american ADJ american_scientific_journal-3702 53 2 scientific scientific ADJ american_scientific_journal-3702 53 3 research research PROPN american_scientific_journal-3702 53 4 journal journal NOUN american_scientific_journal-3702 53 5 for for ADP american_scientific_journal-3702 53 6 engineering engineering NOUN american_scientific_journal-3702 53 7 , , PUNCT american_scientific_journal-3702 53 8 technology technology NOUN american_scientific_journal-3702 53 9 , , PUNCT american_scientific_journal-3702 53 10 and and CCONJ american_scientific_journal-3702 53 11 sciences science NOUN american_scientific_journal-3702 53 12 ( ( PUNCT american_scientific_journal-3702 53 13 asrjets asrjet NOUN american_scientific_journal-3702 53 14 ) ) PUNCT american_scientific_journal-3702 53 15 ( ( PUNCT american_scientific_journal-3702 53 16 2017 2017 NUM american_scientific_journal-3702 53 17 ) ) PUNCT american_scientific_journal-3702 53 18 volume volume NOUN american_scientific_journal-3702 53 19 38 38 NUM american_scientific_journal-3702 53 20 , , PUNCT american_scientific_journal-3702 53 21 no no DET american_scientific_journal-3702 53 22 2 2 NUM american_scientific_journal-3702 53 23 , , PUNCT american_scientific_journal-3702 53 24 pp pp ADV american_scientific_journal-3702 53 25 252 252 NUM american_scientific_journal-3702 53 26 - - SYM american_scientific_journal-3702 53 27 261 261 NUM american_scientific_journal-3702 53 28 255 255 NUM american_scientific_journal-3702 53 29 lpda lpda NOUN american_scientific_journal-3702 53 30 antenna antenna NOUN american_scientific_journal-3702 53 31 is be AUX american_scientific_journal-3702 53 32 designed design VERB american_scientific_journal-3702 53 33 and and CCONJ american_scientific_journal-3702 53 34 simulated simulate VERB american_scientific_journal-3702 53 35 using use VERB american_scientific_journal-3702 53 36 cst cst PROPN american_scientific_journal-3702 53 37 microwave microwave PROPN american_scientific_journal-3702 53 38 studio studio PROPN american_scientific_journal-3702 54 1 [ [ X american_scientific_journal-3702 54 2 12 12 NUM american_scientific_journal-3702 54 3 ] ] PUNCT american_scientific_journal-3702 54 4 . . PUNCT american_scientific_journal-3702 55 1 quad quad ADV american_scientific_journal-3702 55 2 - - PUNCT american_scientific_journal-3702 55 3 core core NOUN american_scientific_journal-3702 55 4 xeon xeon PROPN american_scientific_journal-3702 55 5 processor processor NOUN american_scientific_journal-3702 55 6 with with ADP american_scientific_journal-3702 55 7 64 64 NUM american_scientific_journal-3702 55 8 gb gb NOUN american_scientific_journal-3702 55 9 ram ram NOUN american_scientific_journal-3702 55 10 workstation workstation NOUN american_scientific_journal-3702 55 11 is be AUX american_scientific_journal-3702 55 12 used use VERB american_scientific_journal-3702 55 13 for for ADP american_scientific_journal-3702 55 14 3d 3d NUM american_scientific_journal-3702 55 15 electromagnetic electromagnetic ADJ american_scientific_journal-3702 55 16 simulations simulation NOUN american_scientific_journal-3702 55 17 . . PUNCT american_scientific_journal-3702 56 1 2.2 2.2 NUM american_scientific_journal-3702 56 2 . . PUNCT american_scientific_journal-3702 56 3 prime prime ADJ american_scientific_journal-3702 56 4 focus focus NOUN american_scientific_journal-3702 56 5 parabolic parabolic NOUN american_scientific_journal-3702 56 6 reflector reflector NOUN american_scientific_journal-3702 56 7 design design NOUN american_scientific_journal-3702 56 8 center center NOUN american_scientific_journal-3702 56 9 focus focus VERB american_scientific_journal-3702 56 10 parabolic parabolic ADJ american_scientific_journal-3702 56 11 reflector reflector NOUN american_scientific_journal-3702 56 12 antenna antenna NOUN american_scientific_journal-3702 56 13 is be AUX american_scientific_journal-3702 56 14 the the DET american_scientific_journal-3702 56 15 most most ADV american_scientific_journal-3702 56 16 commonly commonly ADV american_scientific_journal-3702 56 17 used use VERB american_scientific_journal-3702 56 18 type type NOUN american_scientific_journal-3702 56 19 of of ADP american_scientific_journal-3702 56 20 reflector reflector NOUN american_scientific_journal-3702 56 21 antenna antenna NOUN american_scientific_journal-3702 56 22 . . PUNCT american_scientific_journal-3702 57 1 parabolic parabolic ADJ american_scientific_journal-3702 57 2 reflector reflector NOUN american_scientific_journal-3702 57 3 can can AUX american_scientific_journal-3702 57 4 be be AUX american_scientific_journal-3702 57 5 initially initially ADV american_scientific_journal-3702 57 6 designed design VERB american_scientific_journal-3702 57 7 using use VERB american_scientific_journal-3702 57 8 physical physical ADJ american_scientific_journal-3702 57 9 optics optic NOUN american_scientific_journal-3702 57 10 [ [ X american_scientific_journal-3702 57 11 6 6 NUM american_scientific_journal-3702 57 12 - - SYM american_scientific_journal-3702 57 13 8 8 NUM american_scientific_journal-3702 57 14 ] ] PUNCT american_scientific_journal-3702 57 15 . . PUNCT american_scientific_journal-3702 58 1 the the DET american_scientific_journal-3702 58 2 reflector reflector NOUN american_scientific_journal-3702 58 3 is be AUX american_scientific_journal-3702 58 4 designed design VERB american_scientific_journal-3702 58 5 using use VERB american_scientific_journal-3702 58 6 the the DET american_scientific_journal-3702 58 7 following follow VERB american_scientific_journal-3702 58 8 relations relation NOUN american_scientific_journal-3702 58 9 , , PUNCT american_scientific_journal-3702 58 10 tanπœ‘πœ‘π‘œπ‘œ tanπœ‘πœ‘π‘œπ‘œ X american_scientific_journal-3702 58 11 = = SYM american_scientific_journal-3702 58 12 𝐷𝐷/2 𝐷𝐷/2 NUM american_scientific_journal-3702 58 13 πΉπΉβˆ’π»π» πΉπΉβˆ’π»π» NUM american_scientific_journal-3702 58 14 ( ( PUNCT american_scientific_journal-3702 58 15 2 2 NUM american_scientific_journal-3702 58 16 ) ) PUNCT american_scientific_journal-3702 58 17 2.𝐹𝐹 2.𝐹𝐹 PROPN american_scientific_journal-3702 58 18 = = SYM american_scientific_journal-3702 58 19 𝑅𝑅 𝑅𝑅 PROPN american_scientific_journal-3702 58 20 + + NUM american_scientific_journal-3702 58 21 𝑅𝑅. 𝑅𝑅. NOUN american_scientific_journal-3702 58 22 π‘π‘π‘π‘π‘π‘πœ‘πœ‘ π‘π‘π‘π‘π‘π‘πœ‘πœ‘ NOUN american_scientific_journal-3702 58 23 ( ( PUNCT american_scientific_journal-3702 58 24 3 3 NUM american_scientific_journal-3702 58 25 ) ) PUNCT american_scientific_journal-3702 58 26 𝐹𝐹 𝐹𝐹 NOUN american_scientific_journal-3702 59 1 = = SYM american_scientific_journal-3702 59 2 𝐷𝐷2 𝐷𝐷2 PROPN american_scientific_journal-3702 59 3 16.𝐻𝐻 16.𝐻𝐻 NUM american_scientific_journal-3702 59 4 ( ( PUNCT american_scientific_journal-3702 59 5 4 4 NUM american_scientific_journal-3702 59 6 ) ) PUNCT american_scientific_journal-3702 59 7 where where SCONJ american_scientific_journal-3702 59 8 f f PROPN american_scientific_journal-3702 59 9 is be AUX american_scientific_journal-3702 59 10 the the DET american_scientific_journal-3702 59 11 focal focal ADJ american_scientific_journal-3702 59 12 length length NOUN american_scientific_journal-3702 59 13 , , PUNCT american_scientific_journal-3702 59 14 d d PROPN american_scientific_journal-3702 59 15 is be AUX american_scientific_journal-3702 59 16 the the DET american_scientific_journal-3702 59 17 diameter diameter NOUN american_scientific_journal-3702 59 18 of of ADP american_scientific_journal-3702 59 19 paraboloid paraboloid ADJ american_scientific_journal-3702 59 20 , , PUNCT american_scientific_journal-3702 59 21 h h NOUN american_scientific_journal-3702 59 22 is be AUX american_scientific_journal-3702 59 23 depth depth NOUN american_scientific_journal-3702 59 24 of of ADP american_scientific_journal-3702 59 25 the the DET american_scientific_journal-3702 59 26 reflector reflector NOUN american_scientific_journal-3702 59 27 and and CCONJ american_scientific_journal-3702 59 28 Ο†o Ο†o NOUN american_scientific_journal-3702 59 29 is be AUX american_scientific_journal-3702 59 30 half half DET american_scientific_journal-3702 59 31 horizontal horizontal ADJ american_scientific_journal-3702 59 32 angle angle NOUN american_scientific_journal-3702 59 33 of of ADP american_scientific_journal-3702 59 34 the the DET american_scientific_journal-3702 59 35 reflector reflector NOUN american_scientific_journal-3702 59 36 ( ( PUNCT american_scientific_journal-3702 59 37 figure figure NOUN american_scientific_journal-3702 59 38 3 3 NUM american_scientific_journal-3702 59 39 ) ) PUNCT american_scientific_journal-3702 59 40 . . PUNCT american_scientific_journal-3702 60 1 for for ADP american_scientific_journal-3702 60 2 a a DET american_scientific_journal-3702 60 3 paraboloid paraboloid NOUN american_scientific_journal-3702 60 4 with with ADP american_scientific_journal-3702 60 5 depth depth NOUN american_scientific_journal-3702 60 6 h h NOUN american_scientific_journal-3702 60 7 and and CCONJ american_scientific_journal-3702 60 8 diameter diameter NOUN american_scientific_journal-3702 60 9 d d NOUN american_scientific_journal-3702 60 10 in in ADP american_scientific_journal-3702 60 11 an an DET american_scientific_journal-3702 60 12 x x ADJ american_scientific_journal-3702 60 13 - - ADJ american_scientific_journal-3702 60 14 y y ADJ american_scientific_journal-3702 60 15 plane plane NOUN american_scientific_journal-3702 60 16 , , PUNCT american_scientific_journal-3702 60 17 the the DET american_scientific_journal-3702 60 18 geometric geometric ADJ american_scientific_journal-3702 60 19 relations relation NOUN american_scientific_journal-3702 60 20 become become VERB american_scientific_journal-3702 60 21 as as ADP american_scientific_journal-3702 60 22 flows flow NOUN american_scientific_journal-3702 60 23 : : PUNCT american_scientific_journal-3702 60 24 𝑦𝑦 𝑦𝑦 PROPN american_scientific_journal-3702 60 25 = = SYM american_scientific_journal-3702 60 26 π‘Žπ‘Ž. π‘Žπ‘Ž. PROPN american_scientific_journal-3702 60 27 π‘₯π‘₯2 π‘₯π‘₯2 ADV american_scientific_journal-3702 60 28 π‘Žπ‘Ž π‘Žπ‘Ž VERB american_scientific_journal-3702 60 29 = = SYM american_scientific_journal-3702 60 30 𝐻𝐻 𝐻𝐻 NOUN american_scientific_journal-3702 60 31 ( ( PUNCT american_scientific_journal-3702 60 32 𝐷𝐷/2)2 𝐷𝐷/2)2 X american_scientific_journal-3702 60 33 ( ( PUNCT american_scientific_journal-3702 60 34 5 5 NUM american_scientific_journal-3702 60 35 ) ) PUNCT american_scientific_journal-3702 60 36 where where SCONJ american_scientific_journal-3702 60 37 x x X american_scientific_journal-3702 60 38 - - ADJ american_scientific_journal-3702 60 39 axis axis ADJ american_scientific_journal-3702 60 40 varies vary VERB american_scientific_journal-3702 60 41 from from ADP american_scientific_journal-3702 60 42 0 0 NUM american_scientific_journal-3702 60 43 to to ADP american_scientific_journal-3702 60 44 d/2 d/2 PROPN american_scientific_journal-3702 60 45 . . PUNCT american_scientific_journal-3702 61 1 it it PRON american_scientific_journal-3702 61 2 is be AUX american_scientific_journal-3702 61 3 clear clear ADJ american_scientific_journal-3702 61 4 that that SCONJ american_scientific_journal-3702 61 5 when when SCONJ american_scientific_journal-3702 61 6 x x PROPN american_scientific_journal-3702 61 7 is be AUX american_scientific_journal-3702 61 8 d/2 d/2 PROPN american_scientific_journal-3702 61 9 , , PUNCT american_scientific_journal-3702 61 10 y y PROPN american_scientific_journal-3702 61 11 will will AUX american_scientific_journal-3702 61 12 become become VERB american_scientific_journal-3702 61 13 h. h. PROPN american_scientific_journal-3702 61 14 the the DET american_scientific_journal-3702 61 15 dimensions dimension NOUN american_scientific_journal-3702 61 16 of of ADP american_scientific_journal-3702 61 17 the the DET american_scientific_journal-3702 61 18 reflector reflector NOUN american_scientific_journal-3702 61 19 can can AUX american_scientific_journal-3702 61 20 be be AUX american_scientific_journal-3702 61 21 formulated formulate VERB american_scientific_journal-3702 61 22 using use VERB american_scientific_journal-3702 61 23 the the DET american_scientific_journal-3702 61 24 f f PROPN american_scientific_journal-3702 61 25 / / SYM american_scientific_journal-3702 61 26 d d PROPN american_scientific_journal-3702 61 27 ratio ratio NOUN american_scientific_journal-3702 61 28 alternatively alternatively ADV american_scientific_journal-3702 61 29 as as ADP american_scientific_journal-3702 61 30 , , PUNCT american_scientific_journal-3702 61 31 πœ‘πœ‘π‘œπ‘œ πœ‘πœ‘π‘œπ‘œ PROPN american_scientific_journal-3702 62 1 = = PUNCT american_scientific_journal-3702 62 2 2π‘‘π‘‘π‘Žπ‘Žπ‘‘π‘‘βˆ’1 2π‘‘π‘‘π‘Žπ‘Žπ‘‘π‘‘βˆ’1 NUM american_scientific_journal-3702 62 3 ( ( PUNCT american_scientific_journal-3702 62 4 1 1 NUM american_scientific_journal-3702 62 5 4.(𝑓𝑓/𝐷𝐷 4.(𝑓𝑓/𝐷𝐷 NUM american_scientific_journal-3702 62 6 ) ) PUNCT american_scientific_journal-3702 62 7 ) ) PUNCT american_scientific_journal-3702 62 8 . . PUNCT american_scientific_journal-3702 63 1 ( ( PUNCT american_scientific_journal-3702 63 2 6 6 NUM american_scientific_journal-3702 63 3 ) ) PUNCT american_scientific_journal-3702 63 4 as as ADP american_scientific_journal-3702 63 5 f f PROPN american_scientific_journal-3702 63 6 / / SYM american_scientific_journal-3702 63 7 d d PROPN american_scientific_journal-3702 63 8 ratio ratio NOUN american_scientific_journal-3702 63 9 increases increase NOUN american_scientific_journal-3702 63 10 , , PUNCT american_scientific_journal-3702 63 11 the the DET american_scientific_journal-3702 63 12 depth depth NOUN american_scientific_journal-3702 63 13 of of ADP american_scientific_journal-3702 63 14 the the DET american_scientific_journal-3702 63 15 reflector reflector NOUN american_scientific_journal-3702 63 16 decreases decrease VERB american_scientific_journal-3702 63 17 . . PUNCT american_scientific_journal-3702 64 1 figure figure VERB american_scientific_journal-3702 64 2 3 3 NUM american_scientific_journal-3702 64 3 : : PUNCT american_scientific_journal-3702 64 4 general general ADJ american_scientific_journal-3702 64 5 geometry geometry NOUN american_scientific_journal-3702 64 6 of of ADP american_scientific_journal-3702 64 7 the the DET american_scientific_journal-3702 64 8 parabolic parabolic ADJ american_scientific_journal-3702 64 9 reflector reflector NOUN american_scientific_journal-3702 64 10 antenna antenna NOUN american_scientific_journal-3702 64 11 and and CCONJ american_scientific_journal-3702 64 12 the the DET american_scientific_journal-3702 64 13 parabolic parabolic ADJ american_scientific_journal-3702 64 14 reflector reflector NOUN american_scientific_journal-3702 64 15 fed feed VERB american_scientific_journal-3702 64 16 by by ADP american_scientific_journal-3702 64 17 lpda lpda NOUN american_scientific_journal-3702 64 18 ( ( PUNCT american_scientific_journal-3702 64 19 f=911.72 f=911.72 NOUN american_scientific_journal-3702 64 20 mm mm PROPN american_scientific_journal-3702 64 21 , , PUNCT american_scientific_journal-3702 64 22 d=1200 d=1200 PROPN american_scientific_journal-3702 64 23 mm mm PROPN american_scientific_journal-3702 64 24 and and CCONJ american_scientific_journal-3702 64 25 2Ο†o=72.75 2Ο†o=72.75 NUM american_scientific_journal-3702 64 26 degree degree NOUN american_scientific_journal-3702 64 27 ) ) PUNCT american_scientific_journal-3702 64 28 american american ADJ american_scientific_journal-3702 64 29 scientific scientific ADJ american_scientific_journal-3702 64 30 research research NOUN american_scientific_journal-3702 64 31 journal journal NOUN american_scientific_journal-3702 64 32 for for ADP american_scientific_journal-3702 64 33 engineering engineering NOUN american_scientific_journal-3702 64 34 , , PUNCT american_scientific_journal-3702 64 35 technology technology NOUN american_scientific_journal-3702 64 36 , , PUNCT american_scientific_journal-3702 64 37 and and CCONJ american_scientific_journal-3702 64 38 sciences science NOUN american_scientific_journal-3702 64 39 ( ( PUNCT american_scientific_journal-3702 64 40 asrjets asrjet NOUN american_scientific_journal-3702 64 41 ) ) PUNCT american_scientific_journal-3702 64 42 ( ( PUNCT american_scientific_journal-3702 64 43 2017 2017 NUM american_scientific_journal-3702 64 44 ) ) PUNCT american_scientific_journal-3702 64 45 volume volume NOUN american_scientific_journal-3702 64 46 38 38 NUM american_scientific_journal-3702 64 47 , , PUNCT american_scientific_journal-3702 64 48 no no DET american_scientific_journal-3702 64 49 2 2 NUM american_scientific_journal-3702 64 50 , , PUNCT american_scientific_journal-3702 64 51 pp pp ADV american_scientific_journal-3702 64 52 252 252 NUM american_scientific_journal-3702 64 53 - - SYM american_scientific_journal-3702 64 54 261 261 NUM american_scientific_journal-3702 64 55 256 256 NUM american_scientific_journal-3702 64 56 the the DET american_scientific_journal-3702 64 57 designed design VERB american_scientific_journal-3702 64 58 parabolic parabolic ADJ american_scientific_journal-3702 64 59 reflector reflector NOUN american_scientific_journal-3702 64 60 antenna antenna NOUN american_scientific_journal-3702 64 61 is be AUX american_scientific_journal-3702 64 62 also also ADV american_scientific_journal-3702 64 63 shown show VERB american_scientific_journal-3702 64 64 in in ADP american_scientific_journal-3702 64 65 figure figure NOUN american_scientific_journal-3702 64 66 3 3 NUM american_scientific_journal-3702 64 67 . . PUNCT american_scientific_journal-3702 64 68 diameter diameter NOUN american_scientific_journal-3702 64 69 of of ADP american_scientific_journal-3702 64 70 the the DET american_scientific_journal-3702 64 71 reflector reflector NOUN american_scientific_journal-3702 64 72 is be AUX american_scientific_journal-3702 64 73 1.2 1.2 NUM american_scientific_journal-3702 64 74 m m NOUN american_scientific_journal-3702 64 75 and and CCONJ american_scientific_journal-3702 64 76 its its PRON american_scientific_journal-3702 64 77 focal focal ADJ american_scientific_journal-3702 64 78 length length NOUN american_scientific_journal-3702 64 79 is be AUX american_scientific_journal-3702 64 80 0.91 0.91 NUM american_scientific_journal-3702 64 81 m. m. NOUN american_scientific_journal-3702 65 1 so so CCONJ american_scientific_journal-3702 65 2 f f X american_scientific_journal-3702 65 3 / / SYM american_scientific_journal-3702 65 4 d d PROPN american_scientific_journal-3702 65 5 ratio ratio NOUN american_scientific_journal-3702 65 6 is be AUX american_scientific_journal-3702 65 7 0.76 0.76 NUM american_scientific_journal-3702 65 8 and and CCONJ american_scientific_journal-3702 65 9 the the DET american_scientific_journal-3702 65 10 subtended subtended ADJ american_scientific_journal-3702 65 11 angle angle NOUN american_scientific_journal-3702 65 12 of of ADP american_scientific_journal-3702 65 13 this this DET american_scientific_journal-3702 65 14 reflector reflector NOUN american_scientific_journal-3702 65 15 is be AUX american_scientific_journal-3702 65 16 72.75 72.75 NUM american_scientific_journal-3702 65 17 degrees degree NOUN american_scientific_journal-3702 65 18 . . PUNCT american_scientific_journal-3702 66 1 2.3 2.3 NUM american_scientific_journal-3702 66 2 . . PUNCT american_scientific_journal-3702 67 1 reflector reflector NOUN american_scientific_journal-3702 67 2 feed feed VERB american_scientific_journal-3702 67 3 the the DET american_scientific_journal-3702 67 4 hpbw hpbw NOUN american_scientific_journal-3702 67 5 distribution distribution NOUN american_scientific_journal-3702 67 6 of of ADP american_scientific_journal-3702 67 7 the the DET american_scientific_journal-3702 67 8 feeding feeding NOUN american_scientific_journal-3702 67 9 antenna antenna NOUN american_scientific_journal-3702 67 10 and and CCONJ american_scientific_journal-3702 67 11 its its PRON american_scientific_journal-3702 67 12 reflection reflection NOUN american_scientific_journal-3702 67 13 on on ADP american_scientific_journal-3702 67 14 the the DET american_scientific_journal-3702 67 15 reflector reflector NOUN american_scientific_journal-3702 67 16 surface surface NOUN american_scientific_journal-3702 67 17 is be AUX american_scientific_journal-3702 67 18 important important ADJ american_scientific_journal-3702 67 19 for for ADP american_scientific_journal-3702 67 20 high high ADJ american_scientific_journal-3702 67 21 gain gain NOUN american_scientific_journal-3702 67 22 low low PROPN american_scientific_journal-3702 67 23 cross cross PROPN american_scientific_journal-3702 67 24 polarization polarization NOUN american_scientific_journal-3702 67 25 . . PUNCT american_scientific_journal-3702 68 1 subtended subtend VERB american_scientific_journal-3702 68 2 angle angle NOUN american_scientific_journal-3702 68 3 of of ADP american_scientific_journal-3702 68 4 the the DET american_scientific_journal-3702 68 5 reflector reflector NOUN american_scientific_journal-3702 68 6 and and CCONJ american_scientific_journal-3702 68 7 hpbw hpbw NOUN american_scientific_journal-3702 68 8 of of ADP american_scientific_journal-3702 68 9 the the DET american_scientific_journal-3702 68 10 feed feed NOUN american_scientific_journal-3702 68 11 antenna antenna NOUN american_scientific_journal-3702 68 12 must must AUX american_scientific_journal-3702 68 13 be be AUX american_scientific_journal-3702 68 14 compatible compatible ADJ american_scientific_journal-3702 68 15 . . PUNCT american_scientific_journal-3702 69 1 it it PRON american_scientific_journal-3702 69 2 is be AUX american_scientific_journal-3702 69 3 more more ADV american_scientific_journal-3702 69 4 important important ADJ american_scientific_journal-3702 69 5 that that SCONJ american_scientific_journal-3702 69 6 the the DET american_scientific_journal-3702 69 7 phase phase NOUN american_scientific_journal-3702 69 8 center center NOUN american_scientific_journal-3702 69 9 is be AUX american_scientific_journal-3702 69 10 stable stable ADJ american_scientific_journal-3702 69 11 for for ADP american_scientific_journal-3702 69 12 all all DET american_scientific_journal-3702 69 13 frequency frequency NOUN american_scientific_journal-3702 69 14 bands band NOUN american_scientific_journal-3702 69 15 when when SCONJ american_scientific_journal-3702 69 16 the the DET american_scientific_journal-3702 69 17 feeder feeder NOUN american_scientific_journal-3702 69 18 antenna antenna NOUN american_scientific_journal-3702 69 19 is be AUX american_scientific_journal-3702 69 20 placed place VERB american_scientific_journal-3702 69 21 at at ADP american_scientific_journal-3702 69 22 the the DET american_scientific_journal-3702 69 23 focal focal ADJ american_scientific_journal-3702 69 24 point point NOUN american_scientific_journal-3702 69 25 . . PUNCT american_scientific_journal-3702 70 1 however however ADV american_scientific_journal-3702 70 2 , , PUNCT american_scientific_journal-3702 70 3 phase phase NOUN american_scientific_journal-3702 70 4 losses loss NOUN american_scientific_journal-3702 70 5 usually usually ADV american_scientific_journal-3702 70 6 occur occur VERB american_scientific_journal-3702 70 7 at at ADP american_scientific_journal-3702 70 8 the the DET american_scientific_journal-3702 70 9 frequency frequency NOUN american_scientific_journal-3702 70 10 extremes extreme NOUN american_scientific_journal-3702 70 11 of of ADP american_scientific_journal-3702 70 12 the the DET american_scientific_journal-3702 70 13 band band NOUN american_scientific_journal-3702 70 14 . . PUNCT american_scientific_journal-3702 71 1 at at ADP american_scientific_journal-3702 71 2 higher high ADJ american_scientific_journal-3702 71 3 frequencies frequency NOUN american_scientific_journal-3702 71 4 , , PUNCT american_scientific_journal-3702 71 5 phase phase NOUN american_scientific_journal-3702 71 6 center center NOUN american_scientific_journal-3702 71 7 variation variation NOUN american_scientific_journal-3702 71 8 relative relative ADJ american_scientific_journal-3702 71 9 to to ADP american_scientific_journal-3702 71 10 wavelength wavelength NOUN american_scientific_journal-3702 71 11 becomes become VERB american_scientific_journal-3702 71 12 large large ADJ american_scientific_journal-3702 71 13 and and CCONJ american_scientific_journal-3702 71 14 attention attention NOUN american_scientific_journal-3702 71 15 must must AUX american_scientific_journal-3702 71 16 be be AUX american_scientific_journal-3702 71 17 paid pay VERB american_scientific_journal-3702 71 18 at at ADP american_scientific_journal-3702 71 19 the the DET american_scientific_journal-3702 71 20 optimization optimization NOUN american_scientific_journal-3702 71 21 at at ADP american_scientific_journal-3702 71 22 these these DET american_scientific_journal-3702 71 23 frequencies frequency NOUN american_scientific_journal-3702 71 24 of of ADP american_scientific_journal-3702 71 25 the the DET american_scientific_journal-3702 71 26 target target NOUN american_scientific_journal-3702 71 27 band band NOUN american_scientific_journal-3702 71 28 . . PUNCT american_scientific_journal-3702 72 1 3 3 X american_scientific_journal-3702 72 2 . . X american_scientific_journal-3702 72 3 simulation simulation NOUN american_scientific_journal-3702 72 4 results result VERB american_scientific_journal-3702 72 5 3.1 3.1 NUM american_scientific_journal-3702 72 6 . . PUNCT american_scientific_journal-3702 73 1 results result NOUN american_scientific_journal-3702 73 2 of of ADP american_scientific_journal-3702 73 3 lpda lpda NOUN american_scientific_journal-3702 73 4 lpda lpda NOUN american_scientific_journal-3702 73 5 is be AUX american_scientific_journal-3702 73 6 simulated simulate VERB american_scientific_journal-3702 73 7 in in ADP american_scientific_journal-3702 73 8 free free ADJ american_scientific_journal-3702 73 9 space space NOUN american_scientific_journal-3702 73 10 first first ADV american_scientific_journal-3702 73 11 . . PUNCT american_scientific_journal-3702 74 1 return return VERB american_scientific_journal-3702 74 2 loss loss NOUN american_scientific_journal-3702 74 3 appears appear VERB american_scientific_journal-3702 74 4 to to PART american_scientific_journal-3702 74 5 be be AUX american_scientific_journal-3702 74 6 almost almost ADV american_scientific_journal-3702 74 7 less less ADJ american_scientific_journal-3702 74 8 than than ADP american_scientific_journal-3702 74 9 -10 -10 PUNCT american_scientific_journal-3702 74 10 db db VERB american_scientific_journal-3702 74 11 in in ADP american_scientific_journal-3702 74 12 the the DET american_scientific_journal-3702 74 13 range range NOUN american_scientific_journal-3702 74 14 of of ADP american_scientific_journal-3702 74 15 0.7 0.7 NUM american_scientific_journal-3702 74 16 - - SYM american_scientific_journal-3702 74 17 19 19 NUM american_scientific_journal-3702 74 18 ghz ghz NOUN american_scientific_journal-3702 74 19 . . PUNCT american_scientific_journal-3702 75 1 vswr vswr PROPN american_scientific_journal-3702 75 2 of of ADP american_scientific_journal-3702 75 3 the the DET american_scientific_journal-3702 75 4 designed design VERB american_scientific_journal-3702 75 5 antenna antenna NOUN american_scientific_journal-3702 75 6 is be AUX american_scientific_journal-3702 75 7 under under ADP american_scientific_journal-3702 75 8 2 2 NUM american_scientific_journal-3702 75 9 at at ADP american_scientific_journal-3702 75 10 the the DET american_scientific_journal-3702 75 11 desired desire VERB american_scientific_journal-3702 75 12 band band NOUN american_scientific_journal-3702 75 13 ( ( PUNCT american_scientific_journal-3702 75 14 1 1 NUM american_scientific_journal-3702 75 15 - - SYM american_scientific_journal-3702 75 16 19 19 NUM american_scientific_journal-3702 75 17 ghz ghz NOUN american_scientific_journal-3702 75 18 ) ) PUNCT american_scientific_journal-3702 75 19 . . PUNCT american_scientific_journal-3702 76 1 return return VERB american_scientific_journal-3702 76 2 loss loss NOUN american_scientific_journal-3702 76 3 and and CCONJ american_scientific_journal-3702 76 4 vswr vswr VERB american_scientific_journal-3702 76 5 results result NOUN american_scientific_journal-3702 76 6 are be AUX american_scientific_journal-3702 76 7 shown show VERB american_scientific_journal-3702 76 8 in in ADP american_scientific_journal-3702 76 9 figure figure NOUN american_scientific_journal-3702 76 10 4 4 NUM american_scientific_journal-3702 76 11 . . PUNCT american_scientific_journal-3702 76 12 figure figure VERB american_scientific_journal-3702 76 13 4 4 NUM american_scientific_journal-3702 76 14 : : PUNCT american_scientific_journal-3702 76 15 return return VERB american_scientific_journal-3702 76 16 loss loss NOUN american_scientific_journal-3702 76 17 ( ( PUNCT american_scientific_journal-3702 76 18 left leave VERB american_scientific_journal-3702 76 19 ) ) PUNCT american_scientific_journal-3702 76 20 and and CCONJ american_scientific_journal-3702 76 21 vswr vswr VERB american_scientific_journal-3702 76 22 ( ( PUNCT american_scientific_journal-3702 76 23 right right ADJ american_scientific_journal-3702 76 24 ) ) PUNCT american_scientific_journal-3702 76 25 of of ADP american_scientific_journal-3702 76 26 the the DET american_scientific_journal-3702 76 27 lpda lpda NOUN american_scientific_journal-3702 76 28 . . PUNCT american_scientific_journal-3702 77 1 gain gain NOUN american_scientific_journal-3702 77 2 of of ADP american_scientific_journal-3702 77 3 the the DET american_scientific_journal-3702 77 4 lpda lpda NOUN american_scientific_journal-3702 77 5 is be AUX american_scientific_journal-3702 77 6 shown show VERB american_scientific_journal-3702 77 7 in in ADP american_scientific_journal-3702 77 8 figure figure NOUN american_scientific_journal-3702 77 9 5 5 NUM american_scientific_journal-3702 77 10 . . PUNCT american_scientific_journal-3702 78 1 it it PRON american_scientific_journal-3702 78 2 varies vary VERB american_scientific_journal-3702 78 3 between between ADP american_scientific_journal-3702 78 4 8.03 8.03 NUM american_scientific_journal-3702 78 5 – – PUNCT american_scientific_journal-3702 78 6 8.8 8.8 NUM american_scientific_journal-3702 78 7 dbi dbi NOUN american_scientific_journal-3702 78 8 , , PUNCT american_scientific_journal-3702 78 9 and and CCONJ american_scientific_journal-3702 78 10 is be AUX american_scientific_journal-3702 78 11 very very ADV american_scientific_journal-3702 78 12 stable stable ADJ american_scientific_journal-3702 78 13 from from ADP american_scientific_journal-3702 78 14 1 1 NUM american_scientific_journal-3702 78 15 ghz ghz NOUN american_scientific_journal-3702 78 16 to to ADP american_scientific_journal-3702 78 17 19 19 NUM american_scientific_journal-3702 78 18 ghz ghz NOUN american_scientific_journal-3702 78 19 . . PUNCT american_scientific_journal-3702 79 1 the the DET american_scientific_journal-3702 79 2 gain gain NOUN american_scientific_journal-3702 79 3 attains attain VERB american_scientific_journal-3702 79 4 greatest great ADJ american_scientific_journal-3702 79 5 value value NOUN american_scientific_journal-3702 79 6 at at ADP american_scientific_journal-3702 79 7 2 2 NUM american_scientific_journal-3702 79 8 ghz ghz NOUN american_scientific_journal-3702 79 9 and and CCONJ american_scientific_journal-3702 79 10 smallest small ADJ american_scientific_journal-3702 79 11 value value NOUN american_scientific_journal-3702 79 12 at at ADP american_scientific_journal-3702 79 13 15 15 NUM american_scientific_journal-3702 79 14 ghz ghz NOUN american_scientific_journal-3702 79 15 . . PUNCT american_scientific_journal-3702 80 1 figure figure NOUN american_scientific_journal-3702 80 2 5 5 NUM american_scientific_journal-3702 80 3 : : PUNCT american_scientific_journal-3702 80 4 main main ADJ american_scientific_journal-3702 80 5 lobe lobe ADJ american_scientific_journal-3702 80 6 gain gain NOUN american_scientific_journal-3702 80 7 of of ADP american_scientific_journal-3702 80 8 the the DET american_scientific_journal-3702 80 9 lpda lpda NOUN american_scientific_journal-3702 80 10 . . PUNCT american_scientific_journal-3702 81 1 half half ADJ american_scientific_journal-3702 81 2 power power NOUN american_scientific_journal-3702 81 3 beam beam NOUN american_scientific_journal-3702 81 4 width width NOUN american_scientific_journal-3702 81 5 ( ( PUNCT american_scientific_journal-3702 81 6 hpbw hpbw NOUN american_scientific_journal-3702 81 7 ) ) PUNCT american_scientific_journal-3702 81 8 of of ADP american_scientific_journal-3702 81 9 the the DET american_scientific_journal-3702 81 10 antenna antenna NOUN american_scientific_journal-3702 81 11 is be AUX american_scientific_journal-3702 81 12 shown show VERB american_scientific_journal-3702 81 13 in in ADP american_scientific_journal-3702 81 14 the the DET american_scientific_journal-3702 81 15 figure figure NOUN american_scientific_journal-3702 81 16 6 6 NUM american_scientific_journal-3702 81 17 . . PUNCT american_scientific_journal-3702 82 1 the the DET american_scientific_journal-3702 82 2 straight straight ADJ american_scientific_journal-3702 82 3 line line NOUN american_scientific_journal-3702 82 4 indicates indicate VERB american_scientific_journal-3702 82 5 the the DET american_scientific_journal-3702 82 6 hpbw hpbw NOUN american_scientific_journal-3702 82 7 along along ADP american_scientific_journal-3702 82 8 theta theta NOUN american_scientific_journal-3702 82 9 ( ( PUNCT american_scientific_journal-3702 82 10 e e NOUN american_scientific_journal-3702 82 11 - - NOUN american_scientific_journal-3702 82 12 plane plane NOUN american_scientific_journal-3702 82 13 ) ) PUNCT american_scientific_journal-3702 82 14 , , PUNCT american_scientific_journal-3702 82 15 whereas whereas SCONJ american_scientific_journal-3702 82 16 dashed dash VERB american_scientific_journal-3702 82 17 line line NOUN american_scientific_journal-3702 82 18 indicates indicate VERB american_scientific_journal-3702 82 19 phi phi ADJ american_scientific_journal-3702 82 20 - - PUNCT american_scientific_journal-3702 82 21 axis axis ADJ american_scientific_journal-3702 82 22 ( ( PUNCT american_scientific_journal-3702 82 23 h h NOUN american_scientific_journal-3702 82 24 - - PUNCT american_scientific_journal-3702 82 25 plane plane NOUN american_scientific_journal-3702 82 26 ) ) PUNCT american_scientific_journal-3702 82 27 . . PUNCT american_scientific_journal-3702 83 1 hpbw hpbw PROPN american_scientific_journal-3702 83 2 on on ADP american_scientific_journal-3702 83 3 e e NOUN american_scientific_journal-3702 83 4 - - NOUN american_scientific_journal-3702 83 5 plane plane NOUN american_scientific_journal-3702 83 6 does do AUX american_scientific_journal-3702 83 7 not not PART american_scientific_journal-3702 83 8 change change VERB american_scientific_journal-3702 83 9 much much ADV american_scientific_journal-3702 83 10 over over ADP american_scientific_journal-3702 83 11 the the DET american_scientific_journal-3702 83 12 target target NOUN american_scientific_journal-3702 83 13 frequency frequency NOUN american_scientific_journal-3702 83 14 band band NOUN american_scientific_journal-3702 83 15 , , PUNCT american_scientific_journal-3702 83 16 which which PRON american_scientific_journal-3702 83 17 makes make VERB american_scientific_journal-3702 83 18 it it PRON american_scientific_journal-3702 83 19 suitable suitable ADJ american_scientific_journal-3702 83 20 for for ADP american_scientific_journal-3702 83 21 a a DET american_scientific_journal-3702 83 22 reflector reflector NOUN american_scientific_journal-3702 83 23 feed feed NOUN american_scientific_journal-3702 83 24 . . PUNCT american_scientific_journal-3702 84 1 0 0 NUM american_scientific_journal-3702 84 2 5 5 NUM american_scientific_journal-3702 84 3 10 10 NUM american_scientific_journal-3702 84 4 15 15 NUM american_scientific_journal-3702 84 5 20 20 NUM american_scientific_journal-3702 84 6 frequency frequency NOUN american_scientific_journal-3702 84 7 ( ( PUNCT american_scientific_journal-3702 84 8 ghz ghz NOUN american_scientific_journal-3702 84 9 ) ) PUNCT american_scientific_journal-3702 84 10 -40 -40 PUNCT american_scientific_journal-3702 84 11 -35 -35 NUM american_scientific_journal-3702 84 12 -30 -30 NUM american_scientific_journal-3702 84 13 -25 -25 PROPN american_scientific_journal-3702 84 14 -20 -20 NUM american_scientific_journal-3702 84 15 -15 -15 PUNCT american_scientific_journal-3702 84 16 -10 -10 PUNCT american_scientific_journal-3702 85 1 -5 -5 PUNCT american_scientific_journal-3702 85 2 0 0 NUM american_scientific_journal-3702 85 3 ma ma PROPN american_scientific_journal-3702 85 4 gn gn PROPN american_scientific_journal-3702 85 5 itu itu PROPN american_scientific_journal-3702 85 6 de de PROPN american_scientific_journal-3702 85 7 ( ( PUNCT american_scientific_journal-3702 85 8 db db PROPN american_scientific_journal-3702 85 9 ) ) PUNCT american_scientific_journal-3702 85 10 s11 s11 PROPN american_scientific_journal-3702 85 11 / / SYM american_scientific_journal-3702 85 12 0 0 NUM american_scientific_journal-3702 85 13 5 5 NUM american_scientific_journal-3702 85 14 10 10 NUM american_scientific_journal-3702 85 15 15 15 NUM american_scientific_journal-3702 85 16 20 20 NUM american_scientific_journal-3702 85 17 frequency frequency NOUN american_scientific_journal-3702 85 18 ( ( PUNCT american_scientific_journal-3702 85 19 ghz ghz NOUN american_scientific_journal-3702 85 20 ) ) PUNCT american_scientific_journal-3702 85 21 1 1 NUM american_scientific_journal-3702 85 22 1.5 1.5 NUM american_scientific_journal-3702 85 23 2 2 NUM american_scientific_journal-3702 85 24 2.5 2.5 NUM american_scientific_journal-3702 85 25 3 3 NUM american_scientific_journal-3702 85 26 3.5 3.5 NUM american_scientific_journal-3702 85 27 4 4 NUM american_scientific_journal-3702 85 28 4.5 4.5 NUM american_scientific_journal-3702 85 29 5 5 NUM american_scientific_journal-3702 85 30 vs vs ADP american_scientific_journal-3702 85 31 wr wr PROPN american_scientific_journal-3702 85 32 vswr vswr VERB american_scientific_journal-3702 85 33 of of ADP american_scientific_journal-3702 85 34 lpda lpda PROPN american_scientific_journal-3702 85 35 / / SYM american_scientific_journal-3702 85 36 0 0 NUM american_scientific_journal-3702 85 37 2 2 NUM american_scientific_journal-3702 85 38 4 4 NUM american_scientific_journal-3702 85 39 6 6 NUM american_scientific_journal-3702 85 40 8 8 NUM american_scientific_journal-3702 85 41 10 10 NUM american_scientific_journal-3702 85 42 12 12 NUM american_scientific_journal-3702 85 43 14 14 NUM american_scientific_journal-3702 85 44 16 16 NUM american_scientific_journal-3702 85 45 18 18 NUM american_scientific_journal-3702 85 46 20 20 NUM american_scientific_journal-3702 85 47 frequency frequency NOUN american_scientific_journal-3702 85 48 ( ( PUNCT american_scientific_journal-3702 85 49 ghz ghz NOUN american_scientific_journal-3702 85 50 ) ) PUNCT american_scientific_journal-3702 85 51 0 0 NUM american_scientific_journal-3702 85 52 2 2 NUM american_scientific_journal-3702 85 53 4 4 NUM american_scientific_journal-3702 85 54 6 6 NUM american_scientific_journal-3702 85 55 8 8 NUM american_scientific_journal-3702 85 56 10 10 NUM american_scientific_journal-3702 85 57 mag mag NOUN american_scientific_journal-3702 85 58 nitu nitu PROPN american_scientific_journal-3702 85 59 de de X american_scientific_journal-3702 85 60 ( ( PUNCT american_scientific_journal-3702 85 61 db db PROPN american_scientific_journal-3702 85 62 i i X american_scientific_journal-3702 85 63 ) ) PUNCT american_scientific_journal-3702 85 64 realized realize VERB american_scientific_journal-3702 85 65 gain gain NOUN american_scientific_journal-3702 85 66 / / SYM american_scientific_journal-3702 85 67 american american ADJ american_scientific_journal-3702 85 68 scientific scientific ADJ american_scientific_journal-3702 85 69 research research NOUN american_scientific_journal-3702 85 70 journal journal NOUN american_scientific_journal-3702 85 71 for for ADP american_scientific_journal-3702 85 72 engineering engineering NOUN american_scientific_journal-3702 85 73 , , PUNCT american_scientific_journal-3702 85 74 technology technology NOUN american_scientific_journal-3702 85 75 , , PUNCT american_scientific_journal-3702 85 76 and and CCONJ american_scientific_journal-3702 85 77 sciences science NOUN american_scientific_journal-3702 85 78 ( ( PUNCT american_scientific_journal-3702 85 79 asrjets asrjet NOUN american_scientific_journal-3702 85 80 ) ) PUNCT american_scientific_journal-3702 85 81 ( ( PUNCT american_scientific_journal-3702 85 82 2017 2017 NUM american_scientific_journal-3702 85 83 ) ) PUNCT american_scientific_journal-3702 85 84 volume volume NOUN american_scientific_journal-3702 85 85 38 38 NUM american_scientific_journal-3702 85 86 , , PUNCT american_scientific_journal-3702 85 87 no no DET american_scientific_journal-3702 85 88 2 2 NUM american_scientific_journal-3702 85 89 , , PUNCT american_scientific_journal-3702 85 90 pp pp ADV american_scientific_journal-3702 85 91 252 252 NUM american_scientific_journal-3702 85 92 - - SYM american_scientific_journal-3702 85 93 261 261 NUM american_scientific_journal-3702 85 94 257 257 NUM american_scientific_journal-3702 85 95 figure6 figure6 NOUN american_scientific_journal-3702 85 96 : : PUNCT american_scientific_journal-3702 85 97 half half ADJ american_scientific_journal-3702 85 98 power power NOUN american_scientific_journal-3702 85 99 band band NOUN american_scientific_journal-3702 85 100 width width NOUN american_scientific_journal-3702 85 101 ( ( PUNCT american_scientific_journal-3702 85 102 hpbw hpbw NOUN american_scientific_journal-3702 85 103 ) ) PUNCT american_scientific_journal-3702 85 104 of of ADP american_scientific_journal-3702 85 105 the the DET american_scientific_journal-3702 85 106 lpda lpda NOUN american_scientific_journal-3702 85 107 . . PUNCT american_scientific_journal-3702 86 1 gain gain NOUN american_scientific_journal-3702 86 2 pattern pattern NOUN american_scientific_journal-3702 86 3 of of ADP american_scientific_journal-3702 86 4 the the DET american_scientific_journal-3702 86 5 lpda lpda NOUN american_scientific_journal-3702 86 6 are be AUX american_scientific_journal-3702 86 7 shown show VERB american_scientific_journal-3702 86 8 in in ADP american_scientific_journal-3702 86 9 figure figure NOUN american_scientific_journal-3702 86 10 7 7 NUM american_scientific_journal-3702 86 11 . . PUNCT american_scientific_journal-3702 86 12 figure figure NOUN american_scientific_journal-3702 86 13 7 7 NUM american_scientific_journal-3702 86 14 : : PUNCT american_scientific_journal-3702 86 15 gain gain VERB american_scientific_journal-3702 86 16 patterns pattern NOUN american_scientific_journal-3702 86 17 of of ADP american_scientific_journal-3702 86 18 the the DET american_scientific_journal-3702 86 19 lpda lpda NOUN american_scientific_journal-3702 86 20 . . PUNCT american_scientific_journal-3702 87 1 0 0 NUM american_scientific_journal-3702 88 1 5 5 NUM american_scientific_journal-3702 88 2 10 10 NUM american_scientific_journal-3702 88 3 15 15 NUM american_scientific_journal-3702 88 4 20 20 NUM american_scientific_journal-3702 88 5 25 25 NUM american_scientific_journal-3702 88 6 frequency frequency NOUN american_scientific_journal-3702 88 7 ( ( PUNCT american_scientific_journal-3702 88 8 ghz ghz NOUN american_scientific_journal-3702 88 9 ) ) PUNCT american_scientific_journal-3702 88 10 0 0 NUM american_scientific_journal-3702 88 11 20 20 NUM american_scientific_journal-3702 88 12 40 40 NUM american_scientific_journal-3702 88 13 60 60 NUM american_scientific_journal-3702 88 14 80 80 NUM american_scientific_journal-3702 88 15 100 100 NUM american_scientific_journal-3702 88 16 120 120 NUM american_scientific_journal-3702 88 17 140 140 NUM american_scientific_journal-3702 88 18 160 160 NUM american_scientific_journal-3702 88 19 180 180 NUM american_scientific_journal-3702 88 20 hp hp NOUN american_scientific_journal-3702 88 21 bw bw X american_scientific_journal-3702 88 22 ( ( PUNCT american_scientific_journal-3702 88 23 d d NOUN american_scientific_journal-3702 88 24 eg eg PROPN american_scientific_journal-3702 88 25 ) ) PUNCT american_scientific_journal-3702 88 26 hpbw hpbw PROPN american_scientific_journal-3702 88 27 theta theta NOUN american_scientific_journal-3702 88 28 - - PUNCT american_scientific_journal-3702 88 29 axis axis NOUN american_scientific_journal-3702 88 30 phi phi NOUN american_scientific_journal-3702 88 31 - - PUNCT american_scientific_journal-3702 88 32 axis axis ADJ american_scientific_journal-3702 88 33 0 0 NUM american_scientific_journal-3702 88 34 45 45 NUM american_scientific_journal-3702 88 35 90 90 NUM american_scientific_journal-3702 88 36 135 135 NUM american_scientific_journal-3702 88 37 180 180 NUM american_scientific_journal-3702 88 38 225 225 NUM american_scientific_journal-3702 88 39 270 270 NUM american_scientific_journal-3702 88 40 315 315 NUM american_scientific_journal-3702 88 41 0 0 NUM american_scientific_journal-3702 88 42 0 0 NUM american_scientific_journal-3702 88 43 -10 -10 NUM american_scientific_journal-3702 88 44 -10 -10 PUNCT american_scientific_journal-3702 88 45 -20 -20 NUM american_scientific_journal-3702 88 46 -20 -20 NUM american_scientific_journal-3702 88 47 -30 -30 NUM american_scientific_journal-3702 88 48 -30 -30 NUM american_scientific_journal-3702 88 49 -40 -40 PROPN american_scientific_journal-3702 88 50 -40 -40 PROPN american_scientific_journal-3702 88 51 -50 -50 PUNCT american_scientific_journal-3702 88 52 -50 -50 NUM american_scientific_journal-3702 88 53 - - SYM american_scientific_journal-3702 88 54 60 60 NUM american_scientific_journal-3702 88 55 gain gain NOUN american_scientific_journal-3702 88 56 pattern pattern NOUN american_scientific_journal-3702 88 57 1ghz 1ghz NUM american_scientific_journal-3702 88 58 2ghz 2ghz NOUN american_scientific_journal-3702 88 59 3ghz 3ghz PROPN american_scientific_journal-3702 88 60 4ghz 4ghz PROPN american_scientific_journal-3702 88 61 0 0 NUM american_scientific_journal-3702 88 62 45 45 NUM american_scientific_journal-3702 88 63 90 90 NUM american_scientific_journal-3702 88 64 135 135 NUM american_scientific_journal-3702 88 65 180 180 NUM american_scientific_journal-3702 88 66 225 225 NUM american_scientific_journal-3702 88 67 270 270 NUM american_scientific_journal-3702 88 68 315 315 NUM american_scientific_journal-3702 88 69 0 0 NUM american_scientific_journal-3702 88 70 0 0 NUM american_scientific_journal-3702 88 71 -10 -10 NUM american_scientific_journal-3702 88 72 -10 -10 PUNCT american_scientific_journal-3702 88 73 -20 -20 NUM american_scientific_journal-3702 88 74 -20 -20 NUM american_scientific_journal-3702 88 75 -30 -30 NUM american_scientific_journal-3702 88 76 -30 -30 NUM american_scientific_journal-3702 88 77 -40 -40 PUNCT american_scientific_journal-3702 88 78 -40 -40 NUM american_scientific_journal-3702 88 79 - - PUNCT american_scientific_journal-3702 88 80 50 50 NUM american_scientific_journal-3702 88 81 gain gain NOUN american_scientific_journal-3702 88 82 pattern pattern NOUN american_scientific_journal-3702 88 83 5ghz 5ghz NOUN american_scientific_journal-3702 88 84 6ghz 6ghz NOUN american_scientific_journal-3702 88 85 7ghz 7ghz NOUN american_scientific_journal-3702 88 86 8ghz 8ghz NOUN american_scientific_journal-3702 88 87 0 0 NUM american_scientific_journal-3702 88 88 45 45 NUM american_scientific_journal-3702 88 89 90 90 NUM american_scientific_journal-3702 88 90 135 135 NUM american_scientific_journal-3702 88 91 180 180 NUM american_scientific_journal-3702 88 92 225 225 NUM american_scientific_journal-3702 88 93 270 270 NUM american_scientific_journal-3702 88 94 315 315 NUM american_scientific_journal-3702 88 95 0 0 NUM american_scientific_journal-3702 88 96 0 0 NUM american_scientific_journal-3702 88 97 -10 -10 NUM american_scientific_journal-3702 88 98 -10 -10 PUNCT american_scientific_journal-3702 88 99 -20 -20 NUM american_scientific_journal-3702 88 100 -20 -20 NUM american_scientific_journal-3702 88 101 -30 -30 NUM american_scientific_journal-3702 88 102 -30 -30 NUM american_scientific_journal-3702 88 103 -40 -40 PUNCT american_scientific_journal-3702 88 104 -40 -40 NUM american_scientific_journal-3702 88 105 - - PUNCT american_scientific_journal-3702 88 106 50 50 NUM american_scientific_journal-3702 88 107 gain gain NOUN american_scientific_journal-3702 88 108 pattern pattern NOUN american_scientific_journal-3702 88 109 9ghz 9ghz NUM american_scientific_journal-3702 88 110 10ghz 10ghz NOUN american_scientific_journal-3702 88 111 11ghz 11ghz PROPN american_scientific_journal-3702 88 112 12ghz 12ghz NOUN american_scientific_journal-3702 88 113 0 0 NUM american_scientific_journal-3702 88 114 45 45 NUM american_scientific_journal-3702 88 115 90 90 NUM american_scientific_journal-3702 88 116 135 135 NUM american_scientific_journal-3702 88 117 180 180 NUM american_scientific_journal-3702 88 118 225 225 NUM american_scientific_journal-3702 88 119 270 270 NUM american_scientific_journal-3702 88 120 315 315 NUM american_scientific_journal-3702 88 121 0 0 NUM american_scientific_journal-3702 88 122 0 0 NUM american_scientific_journal-3702 88 123 -10 -10 NUM american_scientific_journal-3702 88 124 -10 -10 PUNCT american_scientific_journal-3702 88 125 -20 -20 NUM american_scientific_journal-3702 88 126 -20 -20 NUM american_scientific_journal-3702 88 127 -30 -30 NUM american_scientific_journal-3702 88 128 -30 -30 NUM american_scientific_journal-3702 88 129 -40 -40 PUNCT american_scientific_journal-3702 88 130 -40 -40 NUM american_scientific_journal-3702 88 131 - - PUNCT american_scientific_journal-3702 88 132 50 50 NUM american_scientific_journal-3702 88 133 gain gain NOUN american_scientific_journal-3702 88 134 pattern pattern NOUN american_scientific_journal-3702 88 135 13ghz 13ghz PROPN american_scientific_journal-3702 88 136 14ghz 14ghz PROPN american_scientific_journal-3702 88 137 15ghz 15ghz PROPN american_scientific_journal-3702 88 138 16ghz 16ghz NOUN american_scientific_journal-3702 88 139 0 0 NUM american_scientific_journal-3702 88 140 45 45 NUM american_scientific_journal-3702 88 141 90 90 NUM american_scientific_journal-3702 88 142 135 135 NUM american_scientific_journal-3702 88 143 180 180 NUM american_scientific_journal-3702 88 144 225 225 NUM american_scientific_journal-3702 88 145 270 270 NUM american_scientific_journal-3702 88 146 315 315 NUM american_scientific_journal-3702 88 147 0 0 NUM american_scientific_journal-3702 88 148 0 0 NUM american_scientific_journal-3702 88 149 -10 -10 NUM american_scientific_journal-3702 88 150 -10 -10 PUNCT american_scientific_journal-3702 88 151 -20 -20 NUM american_scientific_journal-3702 88 152 -20 -20 NUM american_scientific_journal-3702 88 153 -30 -30 NUM american_scientific_journal-3702 88 154 -30 -30 NUM american_scientific_journal-3702 88 155 -40 -40 PUNCT american_scientific_journal-3702 88 156 -40 -40 NUM american_scientific_journal-3702 88 157 - - PUNCT american_scientific_journal-3702 88 158 50 50 NUM american_scientific_journal-3702 88 159 gain gain NOUN american_scientific_journal-3702 88 160 pattern pattern NOUN american_scientific_journal-3702 88 161 17ghz 17ghz NOUN american_scientific_journal-3702 88 162 18ghz 18ghz NOUN american_scientific_journal-3702 88 163 19ghz 19ghz PROPN american_scientific_journal-3702 88 164 american american PROPN american_scientific_journal-3702 88 165 scientific scientific PROPN american_scientific_journal-3702 88 166 research research PROPN american_scientific_journal-3702 88 167 journal journal NOUN american_scientific_journal-3702 88 168 for for ADP american_scientific_journal-3702 88 169 engineering engineering NOUN american_scientific_journal-3702 88 170 , , PUNCT american_scientific_journal-3702 88 171 technology technology NOUN american_scientific_journal-3702 88 172 , , PUNCT american_scientific_journal-3702 88 173 and and CCONJ american_scientific_journal-3702 88 174 sciences science NOUN american_scientific_journal-3702 88 175 ( ( PUNCT american_scientific_journal-3702 88 176 asrjets asrjet NOUN american_scientific_journal-3702 88 177 ) ) PUNCT american_scientific_journal-3702 88 178 ( ( PUNCT american_scientific_journal-3702 88 179 2017 2017 NUM american_scientific_journal-3702 88 180 ) ) PUNCT american_scientific_journal-3702 88 181 volume volume NOUN american_scientific_journal-3702 88 182 38 38 NUM american_scientific_journal-3702 88 183 , , PUNCT american_scientific_journal-3702 88 184 no no DET american_scientific_journal-3702 88 185 2 2 NUM american_scientific_journal-3702 88 186 , , PUNCT american_scientific_journal-3702 88 187 pp pp ADV american_scientific_journal-3702 88 188 252 252 NUM american_scientific_journal-3702 88 189 - - SYM american_scientific_journal-3702 88 190 261 261 NUM american_scientific_journal-3702 88 191 258 258 NUM american_scientific_journal-3702 88 192 3.2 3.2 NUM american_scientific_journal-3702 88 193 . . PUNCT american_scientific_journal-3702 89 1 results result NOUN american_scientific_journal-3702 89 2 of of ADP american_scientific_journal-3702 89 3 parabolic parabolic ADJ american_scientific_journal-3702 89 4 reflector reflector NOUN american_scientific_journal-3702 89 5 feeding feeding NOUN american_scientific_journal-3702 89 6 by by ADP american_scientific_journal-3702 89 7 lpda lpda NOUN american_scientific_journal-3702 89 8 when when SCONJ american_scientific_journal-3702 89 9 parabolic parabolic ADJ american_scientific_journal-3702 89 10 reflector reflector NOUN american_scientific_journal-3702 89 11 antenna antenna NOUN american_scientific_journal-3702 89 12 is be AUX american_scientific_journal-3702 89 13 fed feed VERB american_scientific_journal-3702 89 14 by by ADP american_scientific_journal-3702 89 15 lpda lpda NOUN american_scientific_journal-3702 89 16 , , PUNCT american_scientific_journal-3702 89 17 the the DET american_scientific_journal-3702 89 18 return return NOUN american_scientific_journal-3702 89 19 loss loss NOUN american_scientific_journal-3702 89 20 of of ADP american_scientific_journal-3702 89 21 the the DET american_scientific_journal-3702 89 22 lpda lpda NOUN american_scientific_journal-3702 89 23 changed change VERB american_scientific_journal-3702 89 24 due due ADP american_scientific_journal-3702 89 25 to to ADP american_scientific_journal-3702 89 26 near near ADJ american_scientific_journal-3702 89 27 field field NOUN american_scientific_journal-3702 89 28 coupling coupling NOUN american_scientific_journal-3702 89 29 with with ADP american_scientific_journal-3702 89 30 the the DET american_scientific_journal-3702 89 31 reflector reflector NOUN american_scientific_journal-3702 89 32 . . PUNCT american_scientific_journal-3702 90 1 vswr vswr VERB american_scientific_journal-3702 90 2 values value NOUN american_scientific_journal-3702 90 3 are be AUX american_scientific_journal-3702 90 4 given give VERB american_scientific_journal-3702 90 5 in in ADP american_scientific_journal-3702 90 6 figure figure NOUN american_scientific_journal-3702 90 7 8 8 NUM american_scientific_journal-3702 90 8 with with ADP american_scientific_journal-3702 90 9 and and CCONJ american_scientific_journal-3702 90 10 without without ADP american_scientific_journal-3702 90 11 reflector reflector NOUN american_scientific_journal-3702 90 12 . . PUNCT american_scientific_journal-3702 91 1 vswr vswr ADJ american_scientific_journal-3702 91 2 value value NOUN american_scientific_journal-3702 91 3 is be AUX american_scientific_journal-3702 91 4 below below ADP american_scientific_journal-3702 91 5 3 3 NUM american_scientific_journal-3702 91 6 in in ADP american_scientific_journal-3702 91 7 the the DET american_scientific_journal-3702 91 8 range range NOUN american_scientific_journal-3702 91 9 of of ADP american_scientific_journal-3702 91 10 1 1 NUM american_scientific_journal-3702 91 11 - - SYM american_scientific_journal-3702 91 12 18 18 NUM american_scientific_journal-3702 91 13 ghz ghz NOUN american_scientific_journal-3702 91 14 and and CCONJ american_scientific_journal-3702 91 15 below below ADP american_scientific_journal-3702 91 16 3.6 3.6 NUM american_scientific_journal-3702 91 17 at at ADP american_scientific_journal-3702 91 18 19 19 NUM american_scientific_journal-3702 91 19 ghz ghz NOUN american_scientific_journal-3702 91 20 . . PUNCT american_scientific_journal-3702 92 1 these these DET american_scientific_journal-3702 92 2 vswr vswr VERB american_scientific_journal-3702 92 3 values value NOUN american_scientific_journal-3702 92 4 are be AUX american_scientific_journal-3702 92 5 acceptable acceptable ADJ american_scientific_journal-3702 92 6 when when SCONJ american_scientific_journal-3702 92 7 considering consider VERB american_scientific_journal-3702 92 8 the the DET american_scientific_journal-3702 92 9 bandwidth bandwidth NOUN american_scientific_journal-3702 92 10 and and CCONJ american_scientific_journal-3702 92 11 gain gain VERB american_scientific_journal-3702 92 12 . . PUNCT american_scientific_journal-3702 93 1 figure figure NOUN american_scientific_journal-3702 93 2 8 8 NUM american_scientific_journal-3702 93 3 : : PUNCT american_scientific_journal-3702 93 4 vswr vswr VERB american_scientific_journal-3702 93 5 of of ADP american_scientific_journal-3702 93 6 lpda lpda NOUN american_scientific_journal-3702 93 7 without without ADP american_scientific_journal-3702 93 8 the the DET american_scientific_journal-3702 93 9 reflector reflector NOUN american_scientific_journal-3702 93 10 ( ( PUNCT american_scientific_journal-3702 93 11 red red ADJ american_scientific_journal-3702 93 12 straight straight ADJ american_scientific_journal-3702 93 13 line line NOUN american_scientific_journal-3702 93 14 ) ) PUNCT american_scientific_journal-3702 93 15 and and CCONJ american_scientific_journal-3702 93 16 with with ADP american_scientific_journal-3702 93 17 the the DET american_scientific_journal-3702 93 18 reflector reflector NOUN american_scientific_journal-3702 93 19 ( ( PUNCT american_scientific_journal-3702 93 20 blue blue ADJ american_scientific_journal-3702 93 21 dotted dotted ADJ american_scientific_journal-3702 93 22 line line NOUN american_scientific_journal-3702 93 23 ) ) PUNCT american_scientific_journal-3702 93 24 . . PUNCT american_scientific_journal-3702 94 1 realized realize VERB american_scientific_journal-3702 94 2 gain gain NOUN american_scientific_journal-3702 94 3 , , PUNCT american_scientific_journal-3702 94 4 front front ADJ american_scientific_journal-3702 94 5 to to AUX american_scientific_journal-3702 94 6 back back NOUN american_scientific_journal-3702 94 7 ratio ratio NOUN american_scientific_journal-3702 94 8 ( ( PUNCT american_scientific_journal-3702 94 9 f f X american_scientific_journal-3702 94 10 / / SYM american_scientific_journal-3702 94 11 b b NOUN american_scientific_journal-3702 94 12 ) ) PUNCT american_scientific_journal-3702 94 13 and and CCONJ american_scientific_journal-3702 94 14 side side NOUN american_scientific_journal-3702 94 15 lobe lobe NOUN american_scientific_journal-3702 94 16 level level NOUN american_scientific_journal-3702 94 17 ( ( PUNCT american_scientific_journal-3702 94 18 sll sll PROPN american_scientific_journal-3702 94 19 ) ) PUNCT american_scientific_journal-3702 94 20 of of ADP american_scientific_journal-3702 94 21 the the DET american_scientific_journal-3702 94 22 total total ADJ american_scientific_journal-3702 94 23 system system NOUN american_scientific_journal-3702 94 24 are be AUX american_scientific_journal-3702 94 25 shown show VERB american_scientific_journal-3702 94 26 in in ADP american_scientific_journal-3702 94 27 the the DET american_scientific_journal-3702 94 28 figure figure NOUN american_scientific_journal-3702 94 29 9 9 NUM american_scientific_journal-3702 94 30 . . PUNCT american_scientific_journal-3702 95 1 gain gain NOUN american_scientific_journal-3702 95 2 is be AUX american_scientific_journal-3702 95 3 always always ADV american_scientific_journal-3702 95 4 increasing increase VERB american_scientific_journal-3702 95 5 with with ADP american_scientific_journal-3702 95 6 frequency frequency NOUN american_scientific_journal-3702 95 7 . . PUNCT american_scientific_journal-3702 96 1 the the DET american_scientific_journal-3702 96 2 lowest low ADJ american_scientific_journal-3702 96 3 gain gain NOUN american_scientific_journal-3702 96 4 is be AUX american_scientific_journal-3702 96 5 17.37 17.37 NUM american_scientific_journal-3702 96 6 dbi dbi NOUN american_scientific_journal-3702 96 7 at at ADP american_scientific_journal-3702 96 8 1 1 NUM american_scientific_journal-3702 96 9 ghz ghz NOUN american_scientific_journal-3702 96 10 and and CCONJ american_scientific_journal-3702 96 11 the the DET american_scientific_journal-3702 96 12 highest high ADJ american_scientific_journal-3702 96 13 gain gain NOUN american_scientific_journal-3702 96 14 is be AUX american_scientific_journal-3702 96 15 41.74 41.74 NUM american_scientific_journal-3702 96 16 dbi dbi NOUN american_scientific_journal-3702 96 17 at at ADP american_scientific_journal-3702 96 18 19 19 NUM american_scientific_journal-3702 96 19 ghz ghz NOUN american_scientific_journal-3702 96 20 . . PUNCT american_scientific_journal-3702 97 1 the the DET american_scientific_journal-3702 97 2 sll sll PROPN american_scientific_journal-3702 97 3 is be AUX american_scientific_journal-3702 97 4 almost almost ADV american_scientific_journal-3702 97 5 below below ADP american_scientific_journal-3702 97 6 -20 -20 NUM american_scientific_journal-3702 97 7 db db PROPN american_scientific_journal-3702 97 8 . . PUNCT american_scientific_journal-3702 98 1 the the DET american_scientific_journal-3702 98 2 sll sll PROPN american_scientific_journal-3702 98 3 and and CCONJ american_scientific_journal-3702 98 4 front front NOUN american_scientific_journal-3702 98 5 to to PART american_scientific_journal-3702 98 6 back back NOUN american_scientific_journal-3702 98 7 ratio ratio NOUN american_scientific_journal-3702 98 8 is be AUX american_scientific_journal-3702 98 9 also also ADV american_scientific_journal-3702 98 10 better well ADJ american_scientific_journal-3702 98 11 at at ADP american_scientific_journal-3702 98 12 higher high ADJ american_scientific_journal-3702 98 13 frequencies frequency NOUN american_scientific_journal-3702 98 14 . . PUNCT american_scientific_journal-3702 99 1 figure figure VERB american_scientific_journal-3702 99 2 8 8 NUM american_scientific_journal-3702 99 3 : : PUNCT american_scientific_journal-3702 99 4 realized realize VERB american_scientific_journal-3702 99 5 gain gain NOUN american_scientific_journal-3702 99 6 at at ADP american_scientific_journal-3702 99 7 main main ADJ american_scientific_journal-3702 99 8 lobe lobe NOUN american_scientific_journal-3702 99 9 , , PUNCT american_scientific_journal-3702 99 10 front front ADJ american_scientific_journal-3702 99 11 to to AUX american_scientific_journal-3702 99 12 back back VERB american_scientific_journal-3702 99 13 ratio ratio NOUN american_scientific_journal-3702 99 14 ( ( PUNCT american_scientific_journal-3702 99 15 f f X american_scientific_journal-3702 99 16 / / SYM american_scientific_journal-3702 99 17 b b NOUN american_scientific_journal-3702 99 18 ) ) PUNCT american_scientific_journal-3702 99 19 , , PUNCT american_scientific_journal-3702 99 20 and and CCONJ american_scientific_journal-3702 99 21 side side NOUN american_scientific_journal-3702 99 22 lobe lobe NOUN american_scientific_journal-3702 99 23 level level NOUN american_scientific_journal-3702 99 24 ( ( PUNCT american_scientific_journal-3702 99 25 sll sll PROPN american_scientific_journal-3702 99 26 ) ) PUNCT american_scientific_journal-3702 99 27 of of ADP american_scientific_journal-3702 99 28 the the DET american_scientific_journal-3702 99 29 reflector reflector NOUN american_scientific_journal-3702 99 30 antenna antenna NOUN american_scientific_journal-3702 99 31 fed feed VERB american_scientific_journal-3702 99 32 with with ADP american_scientific_journal-3702 99 33 ldpa ldpa PROPN american_scientific_journal-3702 99 34 . . PUNCT american_scientific_journal-3702 100 1 hpbw hpbw PROPN american_scientific_journal-3702 100 2 of of ADP american_scientific_journal-3702 100 3 the the DET american_scientific_journal-3702 100 4 antenna antenna NOUN american_scientific_journal-3702 100 5 is be AUX american_scientific_journal-3702 100 6 displayed display VERB american_scientific_journal-3702 100 7 in in ADP american_scientific_journal-3702 100 8 figure figure NOUN american_scientific_journal-3702 100 9 9 9 NUM american_scientific_journal-3702 100 10 . . PUNCT american_scientific_journal-3702 101 1 hpbw hpbw PROPN american_scientific_journal-3702 101 2 changes change NOUN american_scientific_journal-3702 101 3 from from ADP american_scientific_journal-3702 101 4 15.68 15.68 NUM american_scientific_journal-3702 101 5 to to PART american_scientific_journal-3702 101 6 0.85 0.85 NUM american_scientific_journal-3702 101 7 degree degree NOUN american_scientific_journal-3702 101 8 with with ADP american_scientific_journal-3702 101 9 increasing increase VERB american_scientific_journal-3702 101 10 frequency frequency NOUN american_scientific_journal-3702 101 11 as as SCONJ american_scientific_journal-3702 101 12 expected expect VERB american_scientific_journal-3702 101 13 . . PUNCT american_scientific_journal-3702 102 1 0 0 NUM american_scientific_journal-3702 102 2 2 2 NUM american_scientific_journal-3702 102 3 4 4 NUM american_scientific_journal-3702 102 4 6 6 NUM american_scientific_journal-3702 102 5 8 8 NUM american_scientific_journal-3702 102 6 10 10 NUM american_scientific_journal-3702 102 7 12 12 NUM american_scientific_journal-3702 102 8 14 14 NUM american_scientific_journal-3702 102 9 16 16 NUM american_scientific_journal-3702 102 10 18 18 NUM american_scientific_journal-3702 102 11 20 20 NUM american_scientific_journal-3702 102 12 frequency frequency NOUN american_scientific_journal-3702 102 13 ( ( PUNCT american_scientific_journal-3702 102 14 ghz ghz NOUN american_scientific_journal-3702 102 15 ) ) PUNCT american_scientific_journal-3702 102 16 1 1 NUM american_scientific_journal-3702 102 17 1.5 1.5 NUM american_scientific_journal-3702 102 18 2 2 NUM american_scientific_journal-3702 102 19 2.5 2.5 NUM american_scientific_journal-3702 102 20 3 3 NUM american_scientific_journal-3702 102 21 3.5 3.5 NUM american_scientific_journal-3702 102 22 4 4 NUM american_scientific_journal-3702 102 23 vs vs ADP american_scientific_journal-3702 102 24 w w NOUN american_scientific_journal-3702 102 25 r r NOUN american_scientific_journal-3702 102 26 vswr vswr ADJ american_scientific_journal-3702 102 27 lpda lpda NOUN american_scientific_journal-3702 102 28 withreflector withreflector NOUN american_scientific_journal-3702 102 29 only only ADV american_scientific_journal-3702 102 30 lpda lpda NOUN american_scientific_journal-3702 102 31 0 0 NUM american_scientific_journal-3702 102 32 2 2 NUM american_scientific_journal-3702 102 33 4 4 NUM american_scientific_journal-3702 102 34 6 6 NUM american_scientific_journal-3702 102 35 8 8 NUM american_scientific_journal-3702 102 36 10 10 NUM american_scientific_journal-3702 102 37 12 12 NUM american_scientific_journal-3702 102 38 14 14 NUM american_scientific_journal-3702 102 39 16 16 NUM american_scientific_journal-3702 102 40 18 18 NUM american_scientific_journal-3702 102 41 20 20 NUM american_scientific_journal-3702 102 42 frequency frequency NOUN american_scientific_journal-3702 102 43 ( ( PUNCT american_scientific_journal-3702 102 44 ghz ghz NOUN american_scientific_journal-3702 102 45 ) ) PUNCT american_scientific_journal-3702 102 46 -50 -50 PUNCT american_scientific_journal-3702 102 47 -40 -40 PROPN american_scientific_journal-3702 102 48 -30 -30 NUM american_scientific_journal-3702 102 49 -20 -20 NUM american_scientific_journal-3702 102 50 -10 -10 SYM american_scientific_journal-3702 102 51 0 0 NUM american_scientific_journal-3702 102 52 10 10 NUM american_scientific_journal-3702 102 53 20 20 NUM american_scientific_journal-3702 102 54 30 30 NUM american_scientific_journal-3702 102 55 40 40 NUM american_scientific_journal-3702 102 56 50 50 NUM american_scientific_journal-3702 102 57 m m NOUN american_scientific_journal-3702 102 58 ag ag PROPN american_scientific_journal-3702 102 59 ni ni PROPN american_scientific_journal-3702 102 60 tu tu PROPN american_scientific_journal-3702 102 61 de de X american_scientific_journal-3702 102 62 ( ( PUNCT american_scientific_journal-3702 102 63 d d PROPN american_scientific_journal-3702 102 64 b b PROPN american_scientific_journal-3702 102 65 i i NOUN american_scientific_journal-3702 102 66 ) ) PUNCT american_scientific_journal-3702 102 67 gain gain VERB american_scientific_journal-3702 102 68 f f PROPN american_scientific_journal-3702 102 69 / / SYM american_scientific_journal-3702 102 70 b b PROPN american_scientific_journal-3702 102 71 sll sll PROPN american_scientific_journal-3702 102 72 american american PROPN american_scientific_journal-3702 102 73 scientific scientific PROPN american_scientific_journal-3702 102 74 research research PROPN american_scientific_journal-3702 102 75 journal journal NOUN american_scientific_journal-3702 102 76 for for ADP american_scientific_journal-3702 102 77 engineering engineering NOUN american_scientific_journal-3702 102 78 , , PUNCT american_scientific_journal-3702 102 79 technology technology NOUN american_scientific_journal-3702 102 80 , , PUNCT american_scientific_journal-3702 102 81 and and CCONJ american_scientific_journal-3702 102 82 sciences science NOUN american_scientific_journal-3702 102 83 ( ( PUNCT american_scientific_journal-3702 102 84 asrjets asrjet NOUN american_scientific_journal-3702 102 85 ) ) PUNCT american_scientific_journal-3702 102 86 ( ( PUNCT american_scientific_journal-3702 102 87 2017 2017 NUM american_scientific_journal-3702 102 88 ) ) PUNCT american_scientific_journal-3702 102 89 volume volume NOUN american_scientific_journal-3702 102 90 38 38 NUM american_scientific_journal-3702 102 91 , , PUNCT american_scientific_journal-3702 102 92 no no DET american_scientific_journal-3702 102 93 2 2 NUM american_scientific_journal-3702 102 94 , , PUNCT american_scientific_journal-3702 102 95 pp pp ADV american_scientific_journal-3702 102 96 252 252 NUM american_scientific_journal-3702 102 97 - - SYM american_scientific_journal-3702 102 98 261 261 NUM american_scientific_journal-3702 102 99 259 259 NUM american_scientific_journal-3702 102 100 figure figure NOUN american_scientific_journal-3702 102 101 9 9 NUM american_scientific_journal-3702 102 102 : : PUNCT american_scientific_journal-3702 102 103 hpbw hpbw PROPN american_scientific_journal-3702 102 104 of of ADP american_scientific_journal-3702 102 105 reflector reflector NOUN american_scientific_journal-3702 102 106 antenna antenna NOUN american_scientific_journal-3702 102 107 the the DET american_scientific_journal-3702 102 108 realized realize VERB american_scientific_journal-3702 102 109 gain gain NOUN american_scientific_journal-3702 102 110 patterns pattern NOUN american_scientific_journal-3702 102 111 of of ADP american_scientific_journal-3702 102 112 the the DET american_scientific_journal-3702 102 113 reflector reflector NOUN american_scientific_journal-3702 102 114 antenna antenna NOUN american_scientific_journal-3702 102 115 system system NOUN american_scientific_journal-3702 102 116 are be AUX american_scientific_journal-3702 102 117 presented present VERB american_scientific_journal-3702 102 118 in in ADP american_scientific_journal-3702 102 119 figure figure NOUN american_scientific_journal-3702 102 120 10 10 NUM american_scientific_journal-3702 102 121 . . PUNCT american_scientific_journal-3702 103 1 figure figure NOUN american_scientific_journal-3702 103 2 10 10 NUM american_scientific_journal-3702 103 3 : : PUNCT american_scientific_journal-3702 103 4 gain gain VERB american_scientific_journal-3702 103 5 patterns pattern NOUN american_scientific_journal-3702 103 6 of of ADP american_scientific_journal-3702 103 7 the the DET american_scientific_journal-3702 103 8 reflector reflector NOUN american_scientific_journal-3702 103 9 antenna antenna NOUN american_scientific_journal-3702 103 10 system system NOUN american_scientific_journal-3702 103 11 . . PUNCT american_scientific_journal-3702 104 1 0 0 NUM american_scientific_journal-3702 105 1 2 2 NUM american_scientific_journal-3702 105 2 4 4 NUM american_scientific_journal-3702 105 3 6 6 NUM american_scientific_journal-3702 105 4 8 8 NUM american_scientific_journal-3702 105 5 10 10 NUM american_scientific_journal-3702 105 6 12 12 NUM american_scientific_journal-3702 105 7 14 14 NUM american_scientific_journal-3702 105 8 16 16 NUM american_scientific_journal-3702 105 9 18 18 NUM american_scientific_journal-3702 105 10 20 20 NUM american_scientific_journal-3702 105 11 frequency frequency NOUN american_scientific_journal-3702 105 12 ( ( PUNCT american_scientific_journal-3702 105 13 ghz ghz NOUN american_scientific_journal-3702 105 14 ) ) PUNCT american_scientific_journal-3702 105 15 0 0 NUM american_scientific_journal-3702 105 16 2 2 NUM american_scientific_journal-3702 105 17 4 4 NUM american_scientific_journal-3702 105 18 6 6 NUM american_scientific_journal-3702 105 19 8 8 NUM american_scientific_journal-3702 105 20 10 10 NUM american_scientific_journal-3702 105 21 12 12 NUM american_scientific_journal-3702 105 22 14 14 NUM american_scientific_journal-3702 105 23 16 16 NUM american_scientific_journal-3702 105 24 18 18 NUM american_scientific_journal-3702 105 25 20 20 NUM american_scientific_journal-3702 105 26 h h NOUN american_scientific_journal-3702 105 27 pb pb INTJ american_scientific_journal-3702 105 28 w w NOUN american_scientific_journal-3702 106 1 ( ( PUNCT american_scientific_journal-3702 106 2 d d NOUN american_scientific_journal-3702 106 3 eg eg PROPN american_scientific_journal-3702 106 4 ) ) PUNCT american_scientific_journal-3702 106 5 hpbw hpbw NOUN american_scientific_journal-3702 106 6 of of ADP american_scientific_journal-3702 106 7 reflector reflector NOUN american_scientific_journal-3702 106 8 -40 -40 PROPN american_scientific_journal-3702 106 9 -30 -30 PROPN american_scientific_journal-3702 106 10 -20 -20 NUM american_scientific_journal-3702 106 11 -10 -10 SYM american_scientific_journal-3702 106 12 0 0 NUM american_scientific_journal-3702 106 13 10 10 NUM american_scientific_journal-3702 106 14 20 20 NUM american_scientific_journal-3702 106 15 30 30 NUM american_scientific_journal-3702 106 16 40 40 NUM american_scientific_journal-3702 106 17 theta theta NOUN american_scientific_journal-3702 106 18 ( ( PUNCT american_scientific_journal-3702 106 19 degree degree NOUN american_scientific_journal-3702 106 20 ) ) PUNCT american_scientific_journal-3702 106 21 -50 -50 PUNCT american_scientific_journal-3702 107 1 -40 -40 PROPN american_scientific_journal-3702 107 2 -30 -30 NUM american_scientific_journal-3702 107 3 -20 -20 NUM american_scientific_journal-3702 107 4 -10 -10 SYM american_scientific_journal-3702 107 5 0 0 NUM american_scientific_journal-3702 107 6 10 10 NUM american_scientific_journal-3702 107 7 20 20 NUM american_scientific_journal-3702 107 8 30 30 NUM american_scientific_journal-3702 107 9 ga ga NOUN american_scientific_journal-3702 107 10 in in ADP american_scientific_journal-3702 107 11 ( ( PUNCT american_scientific_journal-3702 107 12 db db PROPN american_scientific_journal-3702 107 13 i i NOUN american_scientific_journal-3702 107 14 ) ) PUNCT american_scientific_journal-3702 107 15 gain gain VERB american_scientific_journal-3702 107 16 pattern pattern NOUN american_scientific_journal-3702 107 17 1ghz 1ghz NUM american_scientific_journal-3702 107 18 2ghz 2ghz NOUN american_scientific_journal-3702 107 19 3ghz 3ghz PROPN american_scientific_journal-3702 107 20 4ghz 4ghz NOUN american_scientific_journal-3702 107 21 -40 -40 PUNCT american_scientific_journal-3702 107 22 -30 -30 NUM american_scientific_journal-3702 107 23 -20 -20 NUM american_scientific_journal-3702 107 24 -10 -10 SYM american_scientific_journal-3702 107 25 0 0 NUM american_scientific_journal-3702 107 26 10 10 NUM american_scientific_journal-3702 107 27 20 20 NUM american_scientific_journal-3702 107 28 30 30 NUM american_scientific_journal-3702 107 29 40 40 NUM american_scientific_journal-3702 107 30 theta theta NOUN american_scientific_journal-3702 107 31 ( ( PUNCT american_scientific_journal-3702 107 32 degree degree NOUN american_scientific_journal-3702 107 33 ) ) PUNCT american_scientific_journal-3702 107 34 -40 -40 PROPN american_scientific_journal-3702 108 1 -30 -30 NUM american_scientific_journal-3702 108 2 -20 -20 NUM american_scientific_journal-3702 108 3 -10 -10 SYM american_scientific_journal-3702 108 4 0 0 NUM american_scientific_journal-3702 108 5 10 10 NUM american_scientific_journal-3702 108 6 20 20 NUM american_scientific_journal-3702 108 7 30 30 NUM american_scientific_journal-3702 108 8 40 40 NUM american_scientific_journal-3702 108 9 ga ga NOUN american_scientific_journal-3702 108 10 in in ADP american_scientific_journal-3702 108 11 ( ( PUNCT american_scientific_journal-3702 108 12 db db PROPN american_scientific_journal-3702 108 13 i i NOUN american_scientific_journal-3702 108 14 ) ) PUNCT american_scientific_journal-3702 108 15 gain gain VERB american_scientific_journal-3702 108 16 pattern pattern NOUN american_scientific_journal-3702 108 17 5ghz 5ghz NOUN american_scientific_journal-3702 108 18 6ghz 6ghz NOUN american_scientific_journal-3702 108 19 7ghz 7ghz NOUN american_scientific_journal-3702 108 20 8ghz 8ghz NOUN american_scientific_journal-3702 108 21 -20 -20 PUNCT american_scientific_journal-3702 108 22 -15 -15 PUNCT american_scientific_journal-3702 108 23 -10 -10 PUNCT american_scientific_journal-3702 109 1 -5 -5 NOUN american_scientific_journal-3702 109 2 0 0 NUM american_scientific_journal-3702 109 3 5 5 NUM american_scientific_journal-3702 109 4 10 10 NUM american_scientific_journal-3702 109 5 15 15 NUM american_scientific_journal-3702 109 6 20 20 NUM american_scientific_journal-3702 109 7 theta theta NOUN american_scientific_journal-3702 109 8 ( ( PUNCT american_scientific_journal-3702 109 9 degree degree NOUN american_scientific_journal-3702 109 10 ) ) PUNCT american_scientific_journal-3702 109 11 -30 -30 NUM american_scientific_journal-3702 109 12 -20 -20 NUM american_scientific_journal-3702 109 13 -10 -10 PUNCT american_scientific_journal-3702 110 1 0 0 NUM american_scientific_journal-3702 110 2 10 10 NUM american_scientific_journal-3702 110 3 20 20 NUM american_scientific_journal-3702 110 4 30 30 NUM american_scientific_journal-3702 110 5 40 40 NUM american_scientific_journal-3702 110 6 ga ga NOUN american_scientific_journal-3702 110 7 in in ADP american_scientific_journal-3702 110 8 ( ( PUNCT american_scientific_journal-3702 110 9 db db PROPN american_scientific_journal-3702 110 10 i i NOUN american_scientific_journal-3702 110 11 ) ) PUNCT american_scientific_journal-3702 110 12 gain gain VERB american_scientific_journal-3702 110 13 pattern pattern NOUN american_scientific_journal-3702 110 14 9ghz 9ghz NUM american_scientific_journal-3702 110 15 10ghz 10ghz NOUN american_scientific_journal-3702 110 16 11ghz 11ghz PROPN american_scientific_journal-3702 110 17 12ghz 12ghz NOUN american_scientific_journal-3702 110 18 -20 -20 NUM american_scientific_journal-3702 110 19 -15 -15 PUNCT american_scientific_journal-3702 110 20 -10 -10 PUNCT american_scientific_journal-3702 111 1 -5 -5 NOUN american_scientific_journal-3702 111 2 0 0 NUM american_scientific_journal-3702 111 3 5 5 NUM american_scientific_journal-3702 111 4 10 10 NUM american_scientific_journal-3702 111 5 15 15 NUM american_scientific_journal-3702 111 6 20 20 NUM american_scientific_journal-3702 111 7 theta theta NOUN american_scientific_journal-3702 111 8 ( ( PUNCT american_scientific_journal-3702 111 9 degree degree NOUN american_scientific_journal-3702 111 10 ) ) PUNCT american_scientific_journal-3702 111 11 -30 -30 NUM american_scientific_journal-3702 111 12 -20 -20 NUM american_scientific_journal-3702 111 13 -10 -10 PUNCT american_scientific_journal-3702 112 1 0 0 NUM american_scientific_journal-3702 112 2 10 10 NUM american_scientific_journal-3702 112 3 20 20 NUM american_scientific_journal-3702 112 4 30 30 NUM american_scientific_journal-3702 112 5 40 40 NUM american_scientific_journal-3702 112 6 50 50 NUM american_scientific_journal-3702 112 7 ga ga NOUN american_scientific_journal-3702 112 8 in in ADP american_scientific_journal-3702 112 9 ( ( PUNCT american_scientific_journal-3702 112 10 db db PROPN american_scientific_journal-3702 112 11 i i NOUN american_scientific_journal-3702 112 12 ) ) PUNCT american_scientific_journal-3702 112 13 gain gain VERB american_scientific_journal-3702 112 14 pattern pattern NOUN american_scientific_journal-3702 112 15 13ghz 13ghz PROPN american_scientific_journal-3702 112 16 14ghz 14ghz PROPN american_scientific_journal-3702 112 17 15ghz 15ghz PROPN american_scientific_journal-3702 112 18 16ghz 16ghz NOUN american_scientific_journal-3702 112 19 -10 -10 PUNCT american_scientific_journal-3702 112 20 -5 -5 NOUN american_scientific_journal-3702 112 21 0 0 NUM american_scientific_journal-3702 112 22 5 5 NUM american_scientific_journal-3702 112 23 10 10 NUM american_scientific_journal-3702 112 24 theta theta NOUN american_scientific_journal-3702 112 25 ( ( PUNCT american_scientific_journal-3702 112 26 degree degree NOUN american_scientific_journal-3702 112 27 ) ) PUNCT american_scientific_journal-3702 112 28 -30 -30 NUM american_scientific_journal-3702 112 29 -20 -20 NUM american_scientific_journal-3702 112 30 -10 -10 PUNCT american_scientific_journal-3702 113 1 0 0 NUM american_scientific_journal-3702 113 2 10 10 NUM american_scientific_journal-3702 113 3 20 20 NUM american_scientific_journal-3702 113 4 30 30 NUM american_scientific_journal-3702 113 5 40 40 NUM american_scientific_journal-3702 113 6 50 50 NUM american_scientific_journal-3702 113 7 ga ga NOUN american_scientific_journal-3702 113 8 in in ADP american_scientific_journal-3702 113 9 ( ( PUNCT american_scientific_journal-3702 113 10 db db PROPN american_scientific_journal-3702 113 11 i i NOUN american_scientific_journal-3702 113 12 ) ) PUNCT american_scientific_journal-3702 113 13 gain gain VERB american_scientific_journal-3702 113 14 pattern pattern NOUN american_scientific_journal-3702 113 15 17ghz 17ghz NOUN american_scientific_journal-3702 113 16 18ghz 18ghz NOUN american_scientific_journal-3702 113 17 19ghz 19ghz PROPN american_scientific_journal-3702 113 18 american american PROPN american_scientific_journal-3702 113 19 scientific scientific PROPN american_scientific_journal-3702 113 20 research research PROPN american_scientific_journal-3702 113 21 journal journal NOUN american_scientific_journal-3702 113 22 for for ADP american_scientific_journal-3702 113 23 engineering engineering NOUN american_scientific_journal-3702 113 24 , , PUNCT american_scientific_journal-3702 113 25 technology technology NOUN american_scientific_journal-3702 113 26 , , PUNCT american_scientific_journal-3702 113 27 and and CCONJ american_scientific_journal-3702 113 28 sciences science NOUN american_scientific_journal-3702 113 29 ( ( PUNCT american_scientific_journal-3702 113 30 asrjets asrjet NOUN american_scientific_journal-3702 113 31 ) ) PUNCT american_scientific_journal-3702 113 32 ( ( PUNCT american_scientific_journal-3702 113 33 2017 2017 NUM american_scientific_journal-3702 113 34 ) ) PUNCT american_scientific_journal-3702 113 35 volume volume NOUN american_scientific_journal-3702 113 36 38 38 NUM american_scientific_journal-3702 113 37 , , PUNCT american_scientific_journal-3702 113 38 no no DET american_scientific_journal-3702 113 39 2 2 NUM american_scientific_journal-3702 113 40 , , PUNCT american_scientific_journal-3702 113 41 pp pp ADV american_scientific_journal-3702 113 42 252 252 NUM american_scientific_journal-3702 113 43 - - SYM american_scientific_journal-3702 113 44 261 261 NUM american_scientific_journal-3702 113 45 260 260 NUM american_scientific_journal-3702 113 46 obtained obtain VERB american_scientific_journal-3702 113 47 antenna antenna NOUN american_scientific_journal-3702 113 48 performances performance NOUN american_scientific_journal-3702 113 49 were be AUX american_scientific_journal-3702 113 50 compared compare VERB american_scientific_journal-3702 113 51 with with ADP american_scientific_journal-3702 113 52 previously previously ADV american_scientific_journal-3702 113 53 designed design VERB american_scientific_journal-3702 113 54 antennas antenna NOUN american_scientific_journal-3702 113 55 in in ADP american_scientific_journal-3702 113 56 the the DET american_scientific_journal-3702 113 57 table table NOUN american_scientific_journal-3702 113 58 1 1 NUM american_scientific_journal-3702 113 59 . . PUNCT american_scientific_journal-3702 114 1 vswr vswr VERB american_scientific_journal-3702 114 2 values value NOUN american_scientific_journal-3702 114 3 of of ADP american_scientific_journal-3702 114 4 previous previous ADJ american_scientific_journal-3702 114 5 studies study NOUN american_scientific_journal-3702 114 6 are be AUX american_scientific_journal-3702 114 7 omitted omit VERB american_scientific_journal-3702 114 8 in in ADP american_scientific_journal-3702 114 9 table table NOUN american_scientific_journal-3702 114 10 1 1 NUM american_scientific_journal-3702 114 11 , , PUNCT american_scientific_journal-3702 114 12 but but CCONJ american_scientific_journal-3702 114 13 peak peak NOUN american_scientific_journal-3702 114 14 gain gain NOUN american_scientific_journal-3702 114 15 along along ADP american_scientific_journal-3702 114 16 with with ADP american_scientific_journal-3702 114 17 hpbw hpbw NOUN american_scientific_journal-3702 114 18 and and CCONJ american_scientific_journal-3702 114 19 aperture aperture ADJ american_scientific_journal-3702 114 20 efficiencies efficiency NOUN american_scientific_journal-3702 114 21 are be AUX american_scientific_journal-3702 114 22 compared compare VERB american_scientific_journal-3702 114 23 . . PUNCT american_scientific_journal-3702 115 1 the the DET american_scientific_journal-3702 115 2 reflector reflector PROPN american_scientific_journal-3702 115 3 diameter diameter NOUN american_scientific_journal-3702 115 4 , , PUNCT american_scientific_journal-3702 115 5 naturally naturally ADV american_scientific_journal-3702 115 6 , , PUNCT american_scientific_journal-3702 115 7 plays play VERB american_scientific_journal-3702 115 8 a a DET american_scientific_journal-3702 115 9 critical critical ADJ american_scientific_journal-3702 115 10 role role NOUN american_scientific_journal-3702 115 11 in in ADP american_scientific_journal-3702 115 12 gain gain NOUN american_scientific_journal-3702 115 13 and and CCONJ american_scientific_journal-3702 115 14 hpbw hpbw NOUN american_scientific_journal-3702 115 15 values value NOUN american_scientific_journal-3702 115 16 , , PUNCT american_scientific_journal-3702 115 17 but but CCONJ american_scientific_journal-3702 115 18 focal focal ADJ american_scientific_journal-3702 115 19 orientation orientation NOUN american_scientific_journal-3702 115 20 and and CCONJ american_scientific_journal-3702 115 21 design design NOUN american_scientific_journal-3702 115 22 of of ADP american_scientific_journal-3702 115 23 lpda lpda NOUN american_scientific_journal-3702 115 24 definitely definitely ADV american_scientific_journal-3702 115 25 improved improve VERB american_scientific_journal-3702 115 26 key key ADJ american_scientific_journal-3702 115 27 antenna antenna NOUN american_scientific_journal-3702 115 28 parameters parameter NOUN american_scientific_journal-3702 115 29 . . PUNCT american_scientific_journal-3702 116 1 table table NOUN american_scientific_journal-3702 116 2 1 1 NUM american_scientific_journal-3702 116 3 : : PUNCT american_scientific_journal-3702 116 4 comparison comparison NOUN american_scientific_journal-3702 116 5 of of ADP american_scientific_journal-3702 116 6 antenna antenna NOUN american_scientific_journal-3702 116 7 specifications specification NOUN american_scientific_journal-3702 116 8 with with ADP american_scientific_journal-3702 116 9 previous previous ADJ american_scientific_journal-3702 116 10 studies study NOUN american_scientific_journal-3702 116 11 . . PUNCT american_scientific_journal-3702 117 1 antennas antennas PROPN american_scientific_journal-3702 117 2 frequency frequency NOUN american_scientific_journal-3702 117 3 ( ( PUNCT american_scientific_journal-3702 117 4 ghz ghz NOUN american_scientific_journal-3702 117 5 ) ) PUNCT american_scientific_journal-3702 117 6 gain gain NOUN american_scientific_journal-3702 117 7 ( ( PUNCT american_scientific_journal-3702 117 8 dbi dbi NOUN american_scientific_journal-3702 117 9 ) ) PUNCT american_scientific_journal-3702 117 10 hpbw hpbw NOUN american_scientific_journal-3702 117 11 ( ( PUNCT american_scientific_journal-3702 117 12 degree degree NOUN american_scientific_journal-3702 117 13 ) ) PUNCT american_scientific_journal-3702 117 14 reflector reflector NOUN american_scientific_journal-3702 117 15 diameter diameter NOUN american_scientific_journal-3702 117 16 ( ( PUNCT american_scientific_journal-3702 117 17 m m NOUN american_scientific_journal-3702 117 18 ) ) PUNCT american_scientific_journal-3702 117 19 aperture aperture ADJ american_scientific_journal-3702 117 20 efficiency efficiency NOUN american_scientific_journal-3702 117 21 this this DET american_scientific_journal-3702 117 22 study study NOUN american_scientific_journal-3702 117 23 1 1 NUM american_scientific_journal-3702 117 24 – – PUNCT american_scientific_journal-3702 117 25 19 19 NUM american_scientific_journal-3702 117 26 17.37 17.37 NUM american_scientific_journal-3702 117 27 – – PUNCT american_scientific_journal-3702 117 28 41.74 41.74 NUM american_scientific_journal-3702 117 29 15.68 15.68 NUM american_scientific_journal-3702 117 30 – – PUNCT american_scientific_journal-3702 117 31 0.85 0.85 NUM american_scientific_journal-3702 117 32 1.2 1.2 NUM american_scientific_journal-3702 117 33 0.35 0.35 NUM american_scientific_journal-3702 117 34 – – PUNCT american_scientific_journal-3702 117 35 0.26 0.26 NUM american_scientific_journal-3702 118 1 [ [ X american_scientific_journal-3702 118 2 11 11 NUM american_scientific_journal-3702 118 3 ] ] SYM american_scientific_journal-3702 118 4 1 1 NUM american_scientific_journal-3702 118 5 – – PUNCT american_scientific_journal-3702 118 6 18 18 NUM american_scientific_journal-3702 118 7 17.4 17.4 NUM american_scientific_journal-3702 118 8 – – PUNCT american_scientific_journal-3702 118 9 41.5 41.5 NUM american_scientific_journal-3702 118 10 14.7 14.7 NUM american_scientific_journal-3702 118 11 – – PUNCT american_scientific_journal-3702 118 12 0.9 0.9 NUM american_scientific_journal-3702 118 13 1.2 1.2 NUM american_scientific_journal-3702 118 14 0.35 0.35 NUM american_scientific_journal-3702 118 15 – – PUNCT american_scientific_journal-3702 118 16 0.28 0.28 NUM american_scientific_journal-3702 118 17 [ [ X american_scientific_journal-3702 118 18 15 15 NUM american_scientific_journal-3702 118 19 ] ] SYM american_scientific_journal-3702 118 20 1 1 NUM american_scientific_journal-3702 118 21 – – SYM american_scientific_journal-3702 118 22 18 18 NUM american_scientific_journal-3702 118 23 15 15 NUM american_scientific_journal-3702 118 24 – – PUNCT american_scientific_journal-3702 118 25 35 35 NUM american_scientific_journal-3702 118 26 25 25 NUM american_scientific_journal-3702 118 27 – – PUNCT american_scientific_journal-3702 118 28 2 2 NUM american_scientific_journal-3702 118 29 1.2 1.2 NUM american_scientific_journal-3702 118 30 0.20 0.20 NUM american_scientific_journal-3702 118 31 – – PUNCT american_scientific_journal-3702 118 32 0.06 0.06 NUM american_scientific_journal-3702 119 1 [ [ X american_scientific_journal-3702 119 2 16 16 NUM american_scientific_journal-3702 119 3 ] ] SYM american_scientific_journal-3702 119 4 1 1 NUM american_scientific_journal-3702 119 5 – – SYM american_scientific_journal-3702 119 6 18 18 NUM american_scientific_journal-3702 119 7 20 20 NUM american_scientific_journal-3702 119 8 – – PUNCT american_scientific_journal-3702 119 9 45 45 NUM american_scientific_journal-3702 119 10 12 12 NUM american_scientific_journal-3702 119 11 – – PUNCT american_scientific_journal-3702 119 12 0.6 0.6 NUM american_scientific_journal-3702 119 13 1.8 1.8 NUM american_scientific_journal-3702 119 14 0.28 0.28 NUM american_scientific_journal-3702 119 15 – – PUNCT american_scientific_journal-3702 119 16 0.27 0.27 NUM american_scientific_journal-3702 119 17 4 4 NUM american_scientific_journal-3702 119 18 . . PUNCT american_scientific_journal-3702 119 19 conclusion conclusion NOUN american_scientific_journal-3702 119 20 high high ADJ american_scientific_journal-3702 119 21 gain gain NOUN american_scientific_journal-3702 119 22 broadband broadband NOUN american_scientific_journal-3702 119 23 antenna antenna NOUN american_scientific_journal-3702 119 24 system system NOUN american_scientific_journal-3702 119 25 was be AUX american_scientific_journal-3702 119 26 designed design VERB american_scientific_journal-3702 119 27 using use VERB american_scientific_journal-3702 119 28 an an DET american_scientific_journal-3702 119 29 lpda lpda NOUN american_scientific_journal-3702 119 30 feed feed NOUN american_scientific_journal-3702 119 31 to to ADP american_scientific_journal-3702 119 32 a1.2 a1.2 PROPN american_scientific_journal-3702 119 33 m m PROPN american_scientific_journal-3702 119 34 diameter diameter PROPN american_scientific_journal-3702 119 35 parabolic parabolic PROPN american_scientific_journal-3702 119 36 reflector reflector NOUN american_scientific_journal-3702 119 37 . . PUNCT american_scientific_journal-3702 120 1 this this DET american_scientific_journal-3702 120 2 lpda lpda NOUN american_scientific_journal-3702 120 3 - - PUNCT american_scientific_journal-3702 120 4 fed feed VERB american_scientific_journal-3702 120 5 reflector reflector NOUN american_scientific_journal-3702 120 6 system system NOUN american_scientific_journal-3702 120 7 operates operate VERB american_scientific_journal-3702 120 8 at at ADP american_scientific_journal-3702 120 9 1 1 NUM american_scientific_journal-3702 120 10 - - SYM american_scientific_journal-3702 120 11 19 19 NUM american_scientific_journal-3702 120 12 ghz ghz NOUN american_scientific_journal-3702 120 13 frequency frequency NOUN american_scientific_journal-3702 120 14 band band NOUN american_scientific_journal-3702 120 15 . . PUNCT american_scientific_journal-3702 121 1 compared compare VERB american_scientific_journal-3702 121 2 to to ADP american_scientific_journal-3702 121 3 previous previous ADJ american_scientific_journal-3702 121 4 studies study NOUN american_scientific_journal-3702 121 5 , , PUNCT american_scientific_journal-3702 121 6 the the DET american_scientific_journal-3702 121 7 design design NOUN american_scientific_journal-3702 121 8 achieves achieve VERB american_scientific_journal-3702 121 9 higher high ADJ american_scientific_journal-3702 121 10 aperture aperture NOUN american_scientific_journal-3702 121 11 efficiency efficiency NOUN american_scientific_journal-3702 121 12 , , PUNCT american_scientific_journal-3702 121 13 hence hence ADV american_scientific_journal-3702 121 14 better well ADJ american_scientific_journal-3702 121 15 gain gain NOUN american_scientific_journal-3702 121 16 . . PUNCT american_scientific_journal-3702 122 1 main main ADJ american_scientific_journal-3702 122 2 limitation limitation NOUN american_scientific_journal-3702 122 3 of of ADP american_scientific_journal-3702 122 4 the the DET american_scientific_journal-3702 122 5 study study NOUN american_scientific_journal-3702 122 6 is be AUX american_scientific_journal-3702 122 7 that that SCONJ american_scientific_journal-3702 122 8 it it PRON american_scientific_journal-3702 122 9 is be AUX american_scientific_journal-3702 122 10 purely purely ADV american_scientific_journal-3702 122 11 simulation simulation NOUN american_scientific_journal-3702 122 12 based base VERB american_scientific_journal-3702 122 13 and and CCONJ american_scientific_journal-3702 122 14 the the DET american_scientific_journal-3702 122 15 results result NOUN american_scientific_journal-3702 122 16 should should AUX american_scientific_journal-3702 122 17 be be AUX american_scientific_journal-3702 122 18 experimentally experimentally ADV american_scientific_journal-3702 122 19 corroborated corroborate VERB american_scientific_journal-3702 122 20 . . PUNCT american_scientific_journal-3702 123 1 the the DET american_scientific_journal-3702 123 2 antenna antenna NOUN american_scientific_journal-3702 123 3 can can AUX american_scientific_journal-3702 123 4 be be AUX american_scientific_journal-3702 123 5 readily readily ADV american_scientific_journal-3702 123 6 used use VERB american_scientific_journal-3702 123 7 in in ADP american_scientific_journal-3702 123 8 direction direction NOUN american_scientific_journal-3702 123 9 finding finding NOUN american_scientific_journal-3702 123 10 and and CCONJ american_scientific_journal-3702 123 11 electronic electronic ADJ american_scientific_journal-3702 123 12 intelligence intelligence NOUN american_scientific_journal-3702 123 13 systems system NOUN american_scientific_journal-3702 123 14 . . PUNCT american_scientific_journal-3702 124 1 acknowledgements acknowledgement NOUN american_scientific_journal-3702 124 2 we we PRON american_scientific_journal-3702 124 3 deeply deeply ADV american_scientific_journal-3702 124 4 thank thank VERB american_scientific_journal-3702 124 5 prof prof PROPN american_scientific_journal-3702 124 6 . . PUNCT american_scientific_journal-3702 125 1 korkut korkut ADJ american_scientific_journal-3702 125 2 yegin yegin NOUN american_scientific_journal-3702 125 3 , , PUNCT american_scientific_journal-3702 125 4 rf rf PROPN american_scientific_journal-3702 125 5 electroncis electroncis NOUN american_scientific_journal-3702 125 6 and and CCONJ american_scientific_journal-3702 125 7 radar radar NOUN american_scientific_journal-3702 125 8 laboratory laboratory NOUN american_scientific_journal-3702 125 9 , , PUNCT american_scientific_journal-3702 125 10 ege ege PROPN american_scientific_journal-3702 125 11 university university PROPN american_scientific_journal-3702 125 12 for for ADP american_scientific_journal-3702 125 13 his his PRON american_scientific_journal-3702 125 14 support support NOUN american_scientific_journal-3702 125 15 and and CCONJ american_scientific_journal-3702 125 16 guidance guidance NOUN american_scientific_journal-3702 125 17 . . PUNCT american_scientific_journal-3702 126 1 references reference NOUN american_scientific_journal-3702 126 2 [ [ X american_scientific_journal-3702 126 3 1 1 NUM american_scientific_journal-3702 126 4 ] ] PUNCT american_scientific_journal-3702 126 5 a. a. NOUN american_scientific_journal-3702 126 6 alpaslan alpaslan PROPN american_scientific_journal-3702 126 7 and and CCONJ american_scientific_journal-3702 126 8 k. k. PROPN american_scientific_journal-3702 126 9 yegin yegin PROPN american_scientific_journal-3702 126 10 . . PUNCT american_scientific_journal-3702 127 1 " " PUNCT american_scientific_journal-3702 127 2 a a DET american_scientific_journal-3702 127 3 fast fast ADJ american_scientific_journal-3702 127 4 elint elint NOUN american_scientific_journal-3702 127 5 receiver receiver NOUN american_scientific_journal-3702 127 6 design design NOUN american_scientific_journal-3702 127 7 , , PUNCT american_scientific_journal-3702 127 8 " " PUNCT american_scientific_journal-3702 127 9 in in ADP american_scientific_journal-3702 127 10 13th 13th PROPN american_scientific_journal-3702 127 11 european european ADJ american_scientific_journal-3702 127 12 radar radar NOUN american_scientific_journal-3702 127 13 conference conference NOUN american_scientific_journal-3702 127 14 ( ( PUNCT american_scientific_journal-3702 127 15 eurad eurad PROPN american_scientific_journal-3702 127 16 ) ) PUNCT american_scientific_journal-3702 127 17 , , PUNCT american_scientific_journal-3702 127 18 2016 2016 NUM american_scientific_journal-3702 127 19 , , PUNCT american_scientific_journal-3702 127 20 pp pp ADJ american_scientific_journal-3702 127 21 . . PUNCT american_scientific_journal-3702 128 1 217 217 NUM american_scientific_journal-3702 128 2 - - SYM american_scientific_journal-3702 128 3 220 220 NUM american_scientific_journal-3702 128 4 . . PUNCT american_scientific_journal-3702 129 1 [ [ X american_scientific_journal-3702 129 2 2 2 NUM american_scientific_journal-3702 129 3 ] ] PUNCT american_scientific_journal-3702 129 4 m. m. NOUN american_scientific_journal-3702 129 5 m. m. NOUN american_scientific_journal-3702 129 6 bilgic bilgic PROPN american_scientific_journal-3702 129 7 and and CCONJ american_scientific_journal-3702 129 8 k. k. PROPN american_scientific_journal-3702 129 9 yegin yegin PROPN american_scientific_journal-3702 129 10 . . PUNCT american_scientific_journal-3702 130 1 " " PUNCT american_scientific_journal-3702 130 2 wideband wideband ADJ american_scientific_journal-3702 130 3 offset offset NOUN american_scientific_journal-3702 130 4 slot slot NOUN american_scientific_journal-3702 130 5 coupled couple VERB american_scientific_journal-3702 130 6 patch patch NOUN american_scientific_journal-3702 130 7 antenna antenna NOUN american_scientific_journal-3702 130 8 array array NOUN american_scientific_journal-3702 130 9 for for ADP american_scientific_journal-3702 130 10 x x SYM american_scientific_journal-3702 130 11 / / SYM american_scientific_journal-3702 130 12 ku ku PROPN american_scientific_journal-3702 130 13 band band NOUN american_scientific_journal-3702 130 14 multimode multimode PROPN american_scientific_journal-3702 130 15 radars radar NOUN american_scientific_journal-3702 130 16 , , PUNCT american_scientific_journal-3702 130 17 " " PUNCT american_scientific_journal-3702 130 18 ieee ieee NOUN american_scientific_journal-3702 130 19 wireless wireless NOUN american_scientific_journal-3702 130 20 and and CCONJ american_scientific_journal-3702 130 21 propagation propagation NOUN american_scientific_journal-3702 130 22 letters letter NOUN american_scientific_journal-3702 130 23 , , PUNCT american_scientific_journal-3702 130 24 vol vol NOUN american_scientific_journal-3702 130 25 . . PROPN american_scientific_journal-3702 130 26 13 13 NUM american_scientific_journal-3702 130 27 , , PUNCT american_scientific_journal-3702 130 28 pp pp ADJ american_scientific_journal-3702 130 29 . . PUNCT american_scientific_journal-3702 131 1 157 157 NUM american_scientific_journal-3702 131 2 - - SYM american_scientific_journal-3702 131 3 160 160 NUM american_scientific_journal-3702 131 4 , , PUNCT american_scientific_journal-3702 131 5 2014 2014 NUM american_scientific_journal-3702 131 6 . . PUNCT american_scientific_journal-3702 132 1 [ [ X american_scientific_journal-3702 132 2 3 3 NUM american_scientific_journal-3702 132 3 ] ] X american_scientific_journal-3702 132 4 m. m. NOUN american_scientific_journal-3702 132 5 m. m. NOUN american_scientific_journal-3702 132 6 bilgic bilgic PROPN american_scientific_journal-3702 132 7 and and CCONJ american_scientific_journal-3702 132 8 k. k. PROPN american_scientific_journal-3702 132 9 yegin yegin PROPN american_scientific_journal-3702 132 10 . . PUNCT american_scientific_journal-3702 133 1 " " PUNCT american_scientific_journal-3702 133 2 wideband wideband ADJ american_scientific_journal-3702 133 3 high high ADJ american_scientific_journal-3702 133 4 gain gain NOUN american_scientific_journal-3702 133 5 ku ku PROPN american_scientific_journal-3702 133 6 band band NOUN american_scientific_journal-3702 133 7 microstrip microstrip NOUN american_scientific_journal-3702 133 8 antenna antenna NOUN american_scientific_journal-3702 133 9 , , PUNCT american_scientific_journal-3702 133 10 " " PUNCT american_scientific_journal-3702 133 11 microwave microwave NOUN american_scientific_journal-3702 133 12 and and CCONJ american_scientific_journal-3702 133 13 optical optical ADJ american_scientific_journal-3702 133 14 technology technology NOUN american_scientific_journal-3702 133 15 letters letter NOUN american_scientific_journal-3702 133 16 , , PUNCT american_scientific_journal-3702 133 17 vol vol NOUN american_scientific_journal-3702 133 18 . . PROPN american_scientific_journal-3702 134 1 55 55 NUM american_scientific_journal-3702 134 2 , , PUNCT american_scientific_journal-3702 134 3 no no INTJ american_scientific_journal-3702 134 4 . . NOUN american_scientific_journal-3702 134 5 6 6 NUM american_scientific_journal-3702 134 6 , , PUNCT american_scientific_journal-3702 134 7 pp pp ADJ american_scientific_journal-3702 134 8 . . PUNCT american_scientific_journal-3702 135 1 1291 1291 NUM american_scientific_journal-3702 135 2 - - SYM american_scientific_journal-3702 135 3 1295 1295 NUM american_scientific_journal-3702 135 4 , , PUNCT american_scientific_journal-3702 135 5 2013 2013 NUM american_scientific_journal-3702 135 6 . . PUNCT american_scientific_journal-3702 136 1 [ [ X american_scientific_journal-3702 136 2 4 4 NUM american_scientific_journal-3702 136 3 ] ] PUNCT american_scientific_journal-3702 136 4 m. m. NOUN american_scientific_journal-3702 136 5 m. m. NOUN american_scientific_journal-3702 136 6 bilgic bilgic PROPN american_scientific_journal-3702 136 7 and and CCONJ american_scientific_journal-3702 136 8 k. k. PROPN american_scientific_journal-3702 136 9 yegin yegin PROPN american_scientific_journal-3702 136 10 . . PUNCT american_scientific_journal-3702 137 1 " " PUNCT american_scientific_journal-3702 137 2 wideband wideband ADJ american_scientific_journal-3702 137 3 , , PUNCT american_scientific_journal-3702 137 4 high high ADJ american_scientific_journal-3702 137 5 - - PUNCT american_scientific_journal-3702 137 6 efficiency efficiency NOUN american_scientific_journal-3702 137 7 quasi quasi ADJ american_scientific_journal-3702 137 8 - - ADJ american_scientific_journal-3702 137 9 planar planar ADJ american_scientific_journal-3702 137 10 antenna antenna NOUN american_scientific_journal-3702 137 11 array array NOUN american_scientific_journal-3702 137 12 for for ADP american_scientific_journal-3702 137 13 ku ku PROPN american_scientific_journal-3702 137 14 band band PROPN american_scientific_journal-3702 137 15 dbs dbs PROPN american_scientific_journal-3702 137 16 reception reception NOUN american_scientific_journal-3702 137 17 systems system NOUN american_scientific_journal-3702 137 18 , , PUNCT american_scientific_journal-3702 137 19 " " PUNCT american_scientific_journal-3702 137 20 int int NOUN american_scientific_journal-3702 137 21 j j PROPN american_scientific_journal-3702 137 22 microwave microwave NOUN american_scientific_journal-3702 137 23 and and CCONJ american_scientific_journal-3702 137 24 wireless wireless ADJ american_scientific_journal-3702 137 25 technologies technology NOUN american_scientific_journal-3702 137 26 , , PUNCT american_scientific_journal-3702 137 27 vol vol NOUN american_scientific_journal-3702 137 28 . . PROPN american_scientific_journal-3702 137 29 8 8 NUM american_scientific_journal-3702 137 30 , , PUNCT american_scientific_journal-3702 137 31 pp pp ADJ american_scientific_journal-3702 137 32 . . PUNCT american_scientific_journal-3702 138 1 221 221 NUM american_scientific_journal-3702 138 2 - - SYM american_scientific_journal-3702 138 3 227 227 NUM american_scientific_journal-3702 138 4 , , PUNCT american_scientific_journal-3702 138 5 mar mar PROPN american_scientific_journal-3702 138 6 . . PROPN american_scientific_journal-3702 138 7 2016 2016 NUM american_scientific_journal-3702 138 8 . . PUNCT american_scientific_journal-3702 139 1 [ [ X american_scientific_journal-3702 139 2 5 5 NUM american_scientific_journal-3702 139 3 ] ] PUNCT american_scientific_journal-3702 139 4 m. m. NOUN american_scientific_journal-3702 139 5 m. m. NOUN american_scientific_journal-3702 139 6 bilgic bilgic PROPN american_scientific_journal-3702 139 7 and and CCONJ american_scientific_journal-3702 139 8 k. k. 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PROPN american_scientific_journal-3702 141 6 balanis balanis PROPN american_scientific_journal-3702 141 7 , , PUNCT american_scientific_journal-3702 141 8 antenna antenna NOUN american_scientific_journal-3702 141 9 theory theory NOUN american_scientific_journal-3702 141 10 analysis analysis NOUN american_scientific_journal-3702 141 11 and and CCONJ american_scientific_journal-3702 141 12 design design NOUN american_scientific_journal-3702 141 13 , , PUNCT american_scientific_journal-3702 141 14 2nd 2nd ADJ american_scientific_journal-3702 141 15 ed ed NOUN american_scientific_journal-3702 141 16 . . 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PROPN american_scientific_journal-3702 143 6 milligan milligan PROPN american_scientific_journal-3702 143 7 , , PUNCT american_scientific_journal-3702 143 8 modern modern ADJ american_scientific_journal-3702 143 9 antenna antenna NOUN american_scientific_journal-3702 143 10 design design NOUN american_scientific_journal-3702 143 11 , , PUNCT american_scientific_journal-3702 143 12 2nd 2nd ADJ american_scientific_journal-3702 143 13 ed ed NOUN american_scientific_journal-3702 143 14 . . 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PROPN american_scientific_journal-3702 144 5 duhamel duhamel PROPN american_scientific_journal-3702 144 6 and and CCONJ american_scientific_journal-3702 144 7 f. f. 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