Volume 31, Issue 4 e22553
RESEARCH ARTICLE

Design of periodic wideband pixel absorber by genetic algorithm combined with internal multi-port method

Shun-Hui Zhu

Shun-Hui Zhu

Institute of Applied Physics, School of Physics, University of Electronic Science and Technology of China, Chengdu, P.R. China

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Xue-Song Yang

Corresponding Author

Xue-Song Yang

Institute of Applied Physics, School of Physics, University of Electronic Science and Technology of China, Chengdu, P.R. China

The Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, P.R. China

Correspondence

Xue-Song Yang, Institute of Applied Physics, School of Physics, University of Electronic Science and Technology of China, Chengdu 611731, P.R. China.

Email: [email protected]

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Jian Wang

Jian Wang

The 13th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang, P.R. China

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Mu-Sheng Liang

Mu-Sheng Liang

Institute of Applied Physics, School of Physics, University of Electronic Science and Technology of China, Chengdu, P.R. China

The Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, P.R. China

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Bing-Zhong Wang

Bing-Zhong Wang

Institute of Applied Physics, School of Physics, University of Electronic Science and Technology of China, Chengdu, P.R. China

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First published: 22 January 2021
Citations: 1

Funding information: National Natural Science Foundation of China, Grant/Award Number: 61731005

Abstract

A periodic wideband pixel absorber is designed by genetic algorithm (GA) combined with a fast circuit simulation method, namely, the internal multi-port method (IMPM). In order to achieve a wideband absorption effect, the pixel connections of the absorber are optimized by GA into three states, that is, metal connection (no loss), disconnection, and lossy connection states. In the optimization, the performance of the pixel absorber is evaluated quickly by the IMPM, rather than by the time-consuming full wave simulation. To validate the optimization performance, the optimized wideband absorber is simulated, fabricated and measured. The simulation and measurement results show that the absorber can achieve an 85% (5.5-13.6 GHz) bandwidth with the absorptivity higher than 90%. Besides, the absorber is insensitive to the polarization and incidence angle of the waves.

DATA AVAILABILITY STATEMENT

Research data are not shared.

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