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Journal of Electromagnetic Waves and Applications Volume 37, 2023 - Issue 3
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Research Article

A broadband perfect metamaterial absorber with angle-insensitive characteristics

Cang Lianga School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, People’s Republic of ChinaView further author information
,
Xianglin Konga School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, People’s Republic of ChinaView further author information
,
Fengjun Wangb Test Physics & Numerical Mathematical, National Key Laboratory of Science and Technology, Beijing, People’s Republic of ChinaView further author information
,
Ruofeng Xua School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, People’s Republic of ChinaView further author information
,
Yixiang Fuc High Performance Electromagnetic Window, Key Laboratory of Aeronautical Science and Technology, Jinan, People’s Republic of ChinaView further author information
,
Xiaoyu Pangc High Performance Electromagnetic Window, Key Laboratory of Aeronautical Science and Technology, Jinan, People’s Republic of ChinaView further author information
,
Shengjun Zhangb Test Physics & Numerical Mathematical, National Key Laboratory of Science and Technology, Beijing, People’s Republic of ChinaView further author information
,
Xiaopeng Shend School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, People’s Republic of ChinaView further author information
&
Lei Zhaoa School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, People’s Republic of ChinaCorrespondence[email protected]
View further author information
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Pages 401-410 | Received 01 Sep 2022, Accepted 30 Oct 2022, Published online: 09 Nov 2022
 
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Abstract

A broadband perfect metamaterial absorber (MA) based on bilayer resistive films with different structure units is proposed in the microwave regime. An equivalent circuit model based on transmission line theory is established to guide the absorber design and explain its broadband and perfect absorption mechanism. The absorber characters high absorptivity and stable angular. The MA displays more than 98% absorption from 4.9 to 22.6 GHz at normal incidence. The performance is suitable for transverse electric (TE) and transverse magnetic (TM) waves at normal incidence, while absorption is better than 90% (80%) within the oblique incidence 50° (60°). The measured results of absorption and 10 dB radar cross section (RCS) agree well with the simulated ones.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by National Natural Science Foundation of China [grant number 61771226].

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