Title :
Circularly polarised patch antenna array using proximity-coupled L-strip line feed
Author :
Lo, W.K. ; Chan, Chi Hou ; Luk, K.M.
Author_Institution :
Wireless Commun. Res. Centr, City Univ. of Hong Kong, Kowloon, China
fDate :
7/6/2000 12:00:00 AM
Abstract :
A microstrip antenna array for circular polarisation (CP) using a proximity L-strip line feed is proposed and experimentally investigated. By placing a cross-slot with unequal slot lengths on the circular patch, circular polarisation can be excited. Also, a sequential rotation technique is adopted for the design of this CP antenna array to widen the bandwidth. The impedance and axial ratio bandwidth values are 78 and 16.15%, respectively. The boresight axial ratio is 0.4 dB at 1.91 GHz
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; microstrip antenna arrays; strip line components; 1.91 GHz; circular patch; circularly polarised patch antenna array; cross-slot; microstrip antenna array; proximity-coupled L-strip line feed; sequential rotation technique; unequal slot lengths;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000878
