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Design of periodic wideband pixel absorber by genetic algorithm combined with internal multi‐port method
Author(s) -
Zhu ShunHui,
Yang XueSong,
Wang Jian,
Liang MuSheng,
Wang BingZhong
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22553
Subject(s) - wideband , bandwidth (computing) , lossy compression , pixel , molar absorptivity , port (circuit theory) , genetic algorithm , electronic engineering , computer science , materials science , optics , engineering , physics , telecommunications , artificial intelligence , machine learning
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.