A Lay-up-Oriented CFRP-Substrate Metamaterial Absorber with High Insensitivity to Polarization  

作　　者：马嗣慧 李迎光 周靖 邾泽鑫 Si-Hui Ma;Ying-Guang Li;Jing Zhou;Ze-Xin Zhu(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology,Nanjing 210016,China)

机构地区：[1]College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China [2]Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology,Nanjing 210016,China

出　　处：《Chinese Physics Letters》2023年第8期27-31,共5页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China for Distinguished Young Scholars(Grant No.51925505);the Major Program of the National Natural Science Foundation of China(Grant No.52090052);the Young Scientists Fund of the National Natural Science Foundation of China(Grant No.52105364)。

摘　　要：Metamaterial absorbers with carbon fiber reinforced polymer(CFRP)substrates,which are called metaCFRPs,have recently gained recognition for their excellent mechanical and electromagnetic performance.Different from traditional metamaterial absorbers with an isotropic substrate,meta-CFRPs with a highly anisotropic CFRP substrate are facing challenges in acquiring polarization-insensitive absorption.Here,a lay-up-oriented structure design method is proposed to solve this problem.Considering the lay-up configuration of CFRP laminates,metallic patterns are designed under corresponding polarization angles and then united together to form an integral structure.A meta-CFRP with a typical CFRP lay-up configuration([0°/45°/90°/-45°]3s)is designed and tested.The experimental results exhibit over 99%microwave absorptivity at 2.44 GHz for all polarization angles.The maximum shift among the resonance peaks of the curves at all polarization angles is only 0.021 GHz.Further studies show that when there are cross-ply laminates in the first few layers of the CFRP substrate,the lay-up-oriented design method can be effectively simplified by ignoring the subsequent lay-up orientations after the first cross-ply layers.Our method can not only provide an effective way for acquiring polarization-insensitive microwave response on meta-CFRPs but also be expected to be promoted to metamaterial absorbers with other anisotropic materials.

关 键 词：structure ABSORBER microwave 

分 类 号：O441.4[理学—电磁学]