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

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APS.2008.4619873

Filename

4619873