A flexible transparent absorber bandwidth expansion design based on characteristic modes

作者全名："Suo, Meng; Xiong, Han; Li, Xin-Ke; Liu, Qi-Feng; Zhang, Huai-Qing"

作者地址："[Suo, Meng] Chongqing Univ, Sch Microelect & Commun Engn, Chongqing 400044, Peoples R China; [Suo, Meng; Xiong, Han; Liu, Qi-Feng; Zhang, Huai-Qing] Chongqing Univ, Sch Elect Engn, Chongqing 400044, Peoples R China; [Li, Xin-Ke] Chongqing Med Univ, Coll Med Informat, Chongqing 400016, Peoples R China; [Xiong, Han] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 211189, Peoples R China"

通信作者："Xiong, H (通讯作者)，Chongqing Univ, Sch Elect Engn, Chongqing 400044, Peoples R China.; Xiong, H (通讯作者)，Southeast Univ, State Key Lab Millimeter Waves, Nanjing 211189, Peoples R China."

来源：RESULTS IN PHYSICS

ESI学科分类：PHYSICS

WOS号：WOS:000944296900001

JCR分区：Q1

影响因子：4.4

年份：2023

卷号：46

期号：　

开始页：　

结束页：　

文献类型：Article

关键词：Transparent absorber; Bandwidth expansion; Characteristic mode theory (CMT)

摘要："In this paper, a flexible transparent absorber with broadband absorption is presented theoretically and demonstrated experimentally, which is composed of five layers. Based on the characteristic mode theory, the absorption bandwidth and modal significance of a narrow band absorber were analyzed with the modal radiation patterns and surface current, respectively. To expand the bandwidth, the effective modes and the positions where the resistors should be loaded were determined with the help of characteristic mode analysis. It has a broadband absorption in the frequency range of 14.3-28.3 GHz with a relative absorption bandwidth of about 65.72 %, and the corresponding absorptance is more than 90 %. Meanwhile, the optimized absorber also achieves a satis-factory absorption rate up to 45 degrees incident angle for both TE and TM polarizations. The experimental results show excellent absorption rates, which indicates a good agreement with the simulated results."

基金机构："Natural Science Foundation of Chongqing [cstc2021ycjh-bgzxm0330, cstc2020jcyj-msxmX0825]; Fundamental Research Funds for the Central Universities [2020CDJ- LHZZ-078]"

基金资助正文："This project is supported in part by Natural Science Foundation of Chongqing, under Grant cstc2021ycjh-bgzxm0330 (Research on Pre- diction and Protection Technology of HPEMP Effects of Radio Frequency System) , and cstc2020jcyj-msxmX0825 (Research on efficient predic- tion method of EMI characteristics of automobile cable network under random electromagnetic environment) , in part by the Fundamental Research Funds for the Central Universities under Project No. 2020CDJ- LHZZ-078."