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Ultra-wideband and high gain antipodal tapered slot antenna with planar metamaterial lens

Published online by Cambridge University Press:  11 June 2021

Ziye Wang ,
Zhengwei Yang ,
Xiao Zhao ,
Linyan Guo Open the ORCID record for Linyan Guo [Opens in a new window]  and
Minjie Guo
Ziye Wang
Affiliation:
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
Zhengwei Yang
Affiliation:
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
Xiao Zhao
Affiliation:
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
Linyan Guo*
Affiliation:
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
Minjie Guo*
Affiliation:
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
*
Author for correspondence: Linyan Guo, E-mail: guoly@cugb.edu.cn
Author for correspondence: Linyan Guo, E-mail: guoly@cugb.edu.cn
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Abstract

To solve the problems of low gain, narrow bandwidth, and poor radiation directivity of conventional ground penetrating radar antenna, this paper proposes an ultra-wideband and high-gain antipodal tapered slot antenna (ATSA) with planar metamaterial lens. As a constituent part of this lens, a new non-resonant metamaterial unit cell is introduced and analyzed by the full-wave simulation tool. The single-layer planar lens composed of the designed unit cells with different sizes is placed in the maximum radiation direction of the ATSA to greatly enhance its radiation capability. The proposed planar lens antenna has a wide impedance bandwidth of 107.4% (2.41–8 GHz) and −3 dB gain bandwidth of 54.5% (4–7 GHz), respectively. The gain increases averagely by 6.0 dB in the whole operating frequency band, and the peck gain reaches 15.4 dBi at 5.5 GHz. And its excellent performance shows a high application prospect in ground penetrating radar and microwave imaging system.

Keywords

Ultra-widebandhigh gainplanar metamaterial lens
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 5 , June 2022 , pp. 641 - 651
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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