Title: A compact Wi-Fi base station antenna using suspended patch and tapered ground

Authors: Hong Ding; P.F. Liu; Q. Fang

Addresses: Department of Information and Electrical Engineering, Ludong University, Yantai City, Shandong Province 264025, China ' Research Institute of China Electronics Technology Group Corporation, No. 36, Jiaxing City, Zhejiang Province 314033, China ' Harbin Institute of Technology, Harbin City, Heilongjiang Province 150001, China

Abstract: To expand the bandwidth of Wi-Fi base station antenna and increase the antenna gain, a 4 × 1 suspended microstrip patch antenna array with a tapered ground is proposed. By employing gradually changed and defected ground, the resonant frequency offset caused by the ground plane is reduced, at the same time, the antenna gain is enhanced. Simulated results indicate that the antenna bandwidth with suspended microstrip patch is increased compared with general microstrip antenna. Measured results illustrate that the operating band is from 2.35 GHz to 2.59 GHz with reflection coefficient less than −10 dB (relative bandwidth 8.9%), and the half power beam width (HPBW) of E-plane and H-plane is 60° and 28°, respectively. The maximum gain of this antenna array is 12.6 dB.

Keywords: wi-fi base station antenna; suspended microstrip patch antenna arrays; tapered ground; resonant frequency offset; simulation; antenna gain.

DOI: 10.1504/IJCAT.2015.071970

International Journal of Computer Applications in Technology, 2015 Vol.52 No.2/3, pp.204 - 210

Available online: 26 Sep 2015 *

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