Double elliptical resonator based quadruple band metamaterial absorber for EMI shielding applications in microwave regime

被引:30
|
作者
Hossain, Md Bellal [1 ]
Faruque, Mohammad Rashed Iqbal [1 ]
Islam, Mohammad Tariqul [2 ]
机构
[1] Univ Kebangsaan Malaysia, Inst Climate Change IPI, Space Sci Ctr ANGKASA, Bangi 43600, Selangor, Malaysia
[2] Univ Kebangsaan Malaysia, Ctr Adv Elect & Commun Engn, Dept Elect Elect & Syst Engn, Bangi 43600, Selangor, Malaysia
关键词
Double elliptical; EMI shielding; Quad-band; Metamaterial absorber; PERFECT ABSORBER; DESIGN;
D O I
10.1016/j.aej.2023.01.035
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A quadruple band wide angle polarization insensitivity metamaterial absorber based on double elliptical resonator structure for electromagnetic interference (EMI) shielding applications in microwave regime has been considered in this paper. The proposed metamaterial absorber (MA) unit cell comprises of a top metallic resonating patch and a ground copper, both of which are sep-arated by an inexpensive FR-4 substrate with a thickness of 0.0185k and an electrical size of 0.138k, at lowest resonance frequency. The proposed MA demonstrates the peak absorption of 97 %, 99.9 %, 99.9 % and 99.6 % at 3.46 GHz, 6.44 GHz, 7.89 GHz and 12.44 GHz, respectively for transverse-electric (TE) mode at normal incidence. The quadruple band absorption mechanism has been understood by the analysis of electromagnetic field with surface current distribution. In addition, the designed MA also exhibits near unity absorption for a polarization and oblique inci-dent angle up to 60 degrees for TE mode. The proposed MA offers greater than 35 dB shielding effective-ness in all bands under both simulated and measured environment. The designed MA has been fabricated and measured to validate the simulation results. The agreement between the measured and simulated results allow for EMI shielding applications in microwave regime.(c) 2023 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
引用
收藏
页码:193 / 206
页数:14
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