Title :
A circular patch fed by a switch line balun with printed L-probes for broadband CP performance
Author :
Wu, Ze-hai ; Lou, Yu ; Bao, Jian ; Yung, Edward K N
Author_Institution :
City Univ. of Hong Kong, Hong Kong
Abstract :
A wideband circularly polarized microstrip patch antenna is designed, fabricated and tested. Utilizing a wideband 90deg planar balun designed with switch line structure, the antenna fed by dual printed L-probes is able to provide good performance in terms of both impedance bandwidth of 45% and axial ratio bandwidth of 41%. Return loss, axial ratio, and radiation patterns are presented in the paper, and the simulated and measured results show good agreements.
Keywords :
antenna feeds; antenna radiation patterns; baluns; broadband antennas; electromagnetic wave polarisation; microstrip antennas; axial ratio bandwidth; broadband CP performance; circularly polarized microstrip patch antenna; dual printed L-probes; impedance bandwidth; radiation patterns; return loss; switch line balun; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Impedance matching; Microstrip antennas; Patch antennas; Polarization; Switches; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619873
