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Wideband nonuniform metasurface antenna with stable gain

Published online by Cambridge University Press:  09 February 2024

Guorui Han Open the ORCID record for Guorui Han [Opens in a new window] ,
Zijun Zheng ,
Jinrong Su Open the ORCID record for Jinrong Su [Opens in a new window] ,
Hao Yuan  and
Wenmei Zhang
Guorui Han*
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi, China
Zijun Zheng
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi, China
Jinrong Su
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi, China
Hao Yuan
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi, China
Wenmei Zhang
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi, China
*
Corresponding author: Guorui Han; Email: han_gr@sxu.edu.cn
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Abstract

A novel wideband nonuniform metasurface antenna with stable gain is demonstrated. The nonuniform metasurface is composed of square patches and rings and is excited by a slot antenna. Based on characteristic mode analysis, two characteristic modes with same current direction are selected to achieve stable radiation performance in a wide frequency range. The wideband operation is achieved by assembling the resonant modes of the metasurface and slot antenna. The measured results show that the −10 dB impedance bandwidth of the proposed antenna is from 4.3 to 8.4 GHz (64.57%), and the 2 dB gain bandwidth is from 4.3 to 6.2 GHz (36.2%) with a peak gain value of 9.42 dBi. Moreover, broadside radiation performance is achieved.

Keywords

broadside radiationcharacteristic mode analysismetasurface antennastable gainwideband
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 8
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Copyright
© The Author(s), 2024. Published by Cambridge University Press in association with the European Microwave Association

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