Title :
Design of broadband circularly polarized high gain microstrip antenna with L-shaped probe feed
Author :
Jia, Jianxin ; Lu, Chunlan ; Li, Zhanmeng ; Jie, Yang
Author_Institution :
Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
Abstract :
A wideband circularly polarized high gain microstrip antenna is presented. The radiating patch is fed by two L-shaped probe feeds connected with a feed network of a 90° hybrid coupler. The antenna delivers a measured impedance bandwidth of 54.5% from 2.64 to 4.62 GHz for SWR <; 2, measured 3-dB axial-ratio bandwidth of 36.7% from 3.05 to 4.4 GHz, respectively. The simulated impedance bandwidth is 55.7% from 2.74 to 4.86 GHz for SWR <; 2. The simulated 3-dB axialratio bandwidth is 33.9% from 3.35 to 4.68 GHz and simulated 3-dB gain bandwidth is 28.8% from 3.48 to 4.65 GHz with peak gain of 9.6dBi.
Keywords :
UHF antennas; antenna feeds; broadband antennas; microstrip antennas; microwave antennas; L-shaped probe feeds; bandwidth 2.64 GHz to 4.86 GHz; broadband circularly polarized high gain microstrip antenna; gain 3 dB; hybrid coupler; radiating patch; wideband circularly polarized high gain microstrip antenna; Antenna measurements; Bandwidth; Feeds; Gain; Impedance; Microstrip; Microstrip antennas; L-probe feed; broadband; circularly polarized antenna; high gain;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230173
