Title :
Broadband circularly polarised slot loop antenna fed by three-stub hybrid coupler
Author :
Qing, X.M. ; Chia, Y.W.M.
Author_Institution :
Centre for Wireless Commun., Singapore
fDate :
7/22/1999 12:00:00 AM
Abstract :
A microstrip slot loop antenna with a three-stub hybrid coupler feed network is proposed for generating broadband circular polarisation. A very broad bandwidth of 55.6% at 2:1 VSWR and 22.2% bandwidth for <3 dB axial ratio was achieved
Keywords :
slot antennas; VSWR; axial ratio; bandwidth; broadband circular polarisation; microstrip slot loop antenna; three-stub hybrid coupler feed network;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990857
