Circularly polarized microstrip antenna with high gain and low profile

Author

Yang Xue-Xia ; Jiang Chao

Author_Institution

Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai, China

fYear

2011

fDate

3-8 July 2011

Firstpage

3106

Lastpage

3108

Abstract

A novel circularly polarized microstrip antenna fed by coupled microstrip lines is presented. The antenna is printed on a single layer substrate. Circular polarized wave is excited by a pair of side-concaved square patches. A balun from coupled microstrip lines to microstrip line is designed to measure the antenna´s performances. The experiment results show that the maximum gain is 9.71dB and the bandwidth of 3dB axial ratio is about 80MHz. The return loss (<;-10dB) bandwidth is 160MHz from 5.71 to 5.87GHz. This antenna not only has high gain and low profile but also is easy to be integrated with microwave circuits.

Keywords

antenna feeds; electromagnetic wave polarisation; microstrip antennas; microstrip lines; microwave antennas; microwave circuits; bandwidth 160 MHz; circularly polarized microstrip antenna; coupled microstrip lines; frequency 5.71 GHz to 5.87 GHz; gain 9.71 dB; microwave circuits; side-concaved square patches; single layer substrate; Antenna measurements; Impedance matching; Microstrip; Microstrip antennas; Microwave antennas; Polarization; circular polarization; coupled microstrip line; gain; microstrip antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Conference_Location

Spokane, WA

ISSN

1522-3965

Print_ISBN

978-1-4244-9562-7

Type

conf

DOI

10.1109/APS.2011.5997189

Filename

5997189