Wideband diffusion metabsorber for perfect scattering field reduction

查看全文 作　　者：ZICHENG [1,2]SONG;PINGPING [1]MIN;JIAQI [1]ZHU;LEI [3]YANG;FENG HAN [2]LIN

机构地区：[1]Center for Composite Materials and Structures,Harbin Institute of Technology,Harbin 150080,China;[2]School of Information Science and Technology,ShanghaiTech University,Shanghai 201210,China;[3]Research Center of Analysis and Measurement,Harbin Institute of Technology,Harbin 150080,China

出　　处：《Photonics Research》索引2022年第10卷第6期,共6页

基　　金：Key Project of National Natural Science Foundation of China(52032004);National Natural Science Foundation for Distinguished Young Scholars of China(51625201);Shanghai Pujiang Program(20PJ1411400)。 摘　　要：Both absorption and diffuse reflection can effectively suppress microwave backward reflection.However,the challenge of designing wideband absorptive elements with anti-phase reflection hinders the simultaneous working of the two principles.With aid of the wideband characteristic of bilateral complementary structure,we propose a strategy to design wideband absorptive elements with large reflection phase differences.For proof of concept,the proposed elements are arranged in a rectangular grid by optimizing scattering field distribution.The proposed diffusion metabsorber achieves over 20-dB scattering field reduction in the range of 8.5–20.3 GHz with good polarization stability and high angular insensitivity of up to±40°,which has been verified by real experiments.Furthermore,the proposed design strategy exhibits the potential to further reduce electromagnetic wave reflection,and the optical transparent characteristic is promising for window applications. 关键词：SCATTERING DIFFUSION PERFECT

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Wideband diffusion metabsorber for perfect scattering field reduction

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