Title :
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
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;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4577-1414-6
DOI :
10.1109/CECNet.2012.6201806