Design of high isolation dual-frequency circular polarized patch antennas

Author

Zhang, Ke ; Zhang, Yonghu ; Li, Lixun ; Ou, Gang

Author_Institution

Satellite Navig. R&D Center, Nat. Univ. of Defense Technol., Changsha, China

fYear

2012

fDate

21-23 April 2012

Firstpage

977

Lastpage

980

Abstract

Miniaturization dual-frequency patch antenna play a very important part in the field of GNSS, and the dual-patch dual-frequency patch antennas with high dielectric constant substrate had the limitation of low isolation which result in mutual coupling between frequencies so that the gain at zenith, pattern and radiation efficiency got bad. In this paper, we put forward a new design of Hole contacting Ground (HCG) to isolate the coax-feed pin belonging to different patch, analysed the influence of HCG on isolation and designed and simulated a dual-patch dual-frequency antenna to prove that the HCG is effective to improve the isolation of patch antenna.

Keywords

antenna feeds; microstrip antennas; multifrequency antennas; permittivity; GNSS; HCG; coax-feed pin; dual-patch antennas; high dielectric constant substrate; high isolation dual-frequency circular polarized patch antennas; hole contacting ground; mutual coupling; pattern efficiency; radiation efficiency; Educational institutions; Microstrip; Microstrip antennas; Patch antennas; Dual-Frequency; Hole contacting Ground(HCG); Isolation; Patch Antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on

Conference_Location

Yichang

Print_ISBN

978-1-4577-1414-6

Type

conf

DOI

10.1109/CECNet.2012.6201806

Filename

6201806