Gain-Enhanced Wideband Circularly Polarized Antenna with a Non-Uniform Metamaterial Reflector

Bosong Qiu; Yinfeng Xia; Yingsong Li

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Gain-Enhanced Wideband Circularly Polarized Antenna with a Non-Uniform Metamaterial Reflector

机译：Gain-Enhanced Wideband Circularly Polarized Antenna with a Non-Uniform Metamaterial Reflector

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摘要

In this paper, a gain-enhanced widebandcircularly polarized (CP) antenna with a non-uniformmetamaterial (NUM) reflector is presented, which iscomposed of a modified wide S-shaped slot antenna anda NUM reflector. To achieve a wideband CP operation, amodified S-shaped slot is fed by an L-shaped microstripfeedline that ends with a triangular patch to improveaxial ratio (AR) bandwidth and impedance bandwidth. ANUM reflector composed of rectangular metal units withdifferent sizes is employed and its units are unevenly distributed.The proposed CP antenna is designed, fabricated,and measured. The measured results show that theimpedance bandwidth covers 3.0-6.0 GHz (66.7%) anda 3-dB AR bandwidth covers 3.1-5.6 GHz (57.4%). Apeak gain of 6.0 dBi is obtained at 3.8 GHz by using thereflector. The advantages of the proposed antenna are thesimple structure, high gain, and broad CP bandwidth.

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来源
《Applied Computational Electromagnetics Society journal》 |2022年第3期|281-286|共6页
作者
Bosong Qiu; Yinfeng Xia; Yingsong Li;
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作者单位

Department of Information and Communication Engineering,Harbin Engineering University, Harbin 150009, China;

Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education,Anhui University, Hefei 230601, China;

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原文格式 PDF
正文语种英语
中图分类电磁学、电动力学;
关键词
Circular polarization; gain enhancement; broadband antenna; non-uniform metamaterial reflector;

Gain-Enhanced Wideband Circularly Polarized Antenna with a Non-Uniform Metamaterial Reflector

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