A Broadband Dual Circularly Polarized Patch Antenna With Wide Beamwidth

Author

Changhong Zhang ; Xianling Liang ; Xudong Bai ; Junping Geng ; Ronghong Jin

Author_Institution

Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China

Volume

13

fYear

2014

fDate

2014

Firstpage

1457

Lastpage

1460

Abstract

A broadband dual circularly polarized patch antenna with wide beamwidth is presented. The patch is excited by four cross slots via a microstrip line with multiple matching segments underneath the ground plane. The four cross slots and the multiple matching segments are optimized simultaneously to obtain the best performance. Measurements show that the antenna has 10-dB return-loss bandwidth of 24%, 10-dB isolation bandwidth of 19%, 3-dB axial-ratio bandwidth of 16%, and beamwidth of 110 ^°. Moreover, the single feed makes it a good candidate for array design.

Keywords

broadband antennas; electromagnetic wave polarisation; microstrip antenna arrays; microstrip lines; optimisation; array design; axial-ratio bandwidth; beamwidth; broadband dual circularly polarized patch antenna; cross slot; ground plane; isolation bandwidth; matching segment optimisation; microstrip line; return loss bandwidth; Antenna measurements; Broadband antennas; Feeds; Loss measurement; Microstrip; Microstrip antennas; Broadband; circular polarization; dual; wide beamwidth;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2333760

Filename

6866866