A broadband Fabry–Perot resonator antenna using partially reflecting surface with positive reflection phase gradient

Author:

Zhu Lele1ORCID,Liu Yufeng1ORCID,Liang Jiyu1,Zhang Qiang1ORCID,Zhang Wenmei1ORCID,Gao Yang2

Affiliation:

1. School of Physics and Electronic Engineering, Shanxi University, Shanxi 030006, China

2. 33rd Research Institute of China Electronics Technology Group Corporation, Taiyuan 030006, China

Abstract

A novel Fabry–Perot resonator antenna with a wide impedance- and gain-bandwidth is proposed in this paper. A wideband aperture-coupled microstrip antenna is used as the primary source, and a single-layer frequency selective surface with a positive reflection phase gradient is designed as a partially reflective surface. To validate the proposed approach, a prototype antenna operating in the X-band is designed, fabricated, and measured. Both simulation and measured results indicate that the proposed antenna exhibits wideband characteristics. The measured impedance bandwidth (| S11| < −10 dB) is 64.4%, ranging from 8.68 to 15.12 GHz. The experiments demonstrate that a 3 dB gain bandwidth of 31.9% from 8.61 to 11.80 GHz with a peak gain of 14.0 dBi at 10 GHz is achieved. In addition, the proposed antenna reveals good directional radiation patterns, low side-lobe level, and low cross-polarization over the whole working band.

Funder

National Natural Science Foundation of China

China-Belarus Belt and Road Joint Laboratory on Electromagnetic Environment Effect

Publisher

AIP Publishing

Subject

General Physics and Astronomy

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