Title :
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
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;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5997189
