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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: [email protected]
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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
Metamaterials and Photonic Bandgap Structures
Information
International Journal of Microwave and Wireless Technologies , Volume 16 , Issue 2 , March 2024 , pp. 268 - 275
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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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