A multi-band closed-cell metamaterial absorber based on a low-permittivity all-dielectric structure. (13th July 2020)

• Record Type: Journal Article
• Authors: Zhang, Fen; Jiang, Chao; Wang, Qiang; Zhao, Zixiang; Wang, Yan; Du, Zuojuan; Wang, Chunqi; Huang, Xiaozhong
• Is Part Of: Applied physics express. Volume 13:Number 8(2020)
• Publication Date: 2020-07-13
• Subjects: metamaterial absorber -- multi-band -- low-permittivity all-dielectric structure -- resonance -- closed-cell; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/ab9877
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: A closed-cell metamaterial absorber (CCMA) made of a low-permittivity dielectric is proposed and investigated in this paper. It realizes five absorption peaks below −10 dB in the range of 6–18 GHz, and the strongest absorption can reach near −40 dB. By investigating the distribution of electromagnetic fields, it is found that multi-resonance is caused by the embedding of closed cells. Interestingly, it is possible that part of the absorption peaks could be moved individually by different parameters of the closed-cell arrays. Similarities between the results of experiment and simulation confirm the practical feasibility of the CCMA.