id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
american_scientific_journal-4591	A. Kabeel, Ahmed; H. Hussein, Amr; A. M. Khalaf, Ashraf; F. A. Hamed, Hesham	High Gain UWB Antenna Element Design for Cognitive Radio Systems using Low Cost FR4 Substrate	2019	10	.pdf	application/pdf	2168	120	52	Hence, the most common problems that obstructs while designing UWB antennas is to achieve good gain- bandwidth characteristic with reduced size and cost. A new design for UWB antenna with a promising result has been introduced in [6].	cache/american_scientific_journal-4591.pdf	txt/american_scientific_journal-4591.txt