A new design for an ultra-wideband microwave metamaterial absorber. (14th May 2021)

• Record Type: Journal Article
• Authors: Yu, Yongjun; Sun, Pingyuan; Wang, Yunfan; Chen, Zhaoyang
• Is Part Of: Journal of physics. Volume 54:Number 29(2021)
• Publication Date: 2021-05-14
• Subjects: metamaterial absorber -- microwave -- broadband -- surface wave -- resonance; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/abf9da
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: In this paper we propose a new design for an ultra-wideband microwave metamaterial absorber. This metamaterial absorber has a sandwich structure, and the top metal pattern is periodically arranged on the copper background. This metamaterial absorber is combined with Fe–Co composites and metamaterials, which solves the narrow-band problem of microwave absorption. We realize an absorptivity of more than 90% in the 2.16–18 GHz frequency band for normal incidence. The thickness of the structure is 0.61 mm (about 1/48.8 wavelength at the central frequency). The performance of the proposed absorber is not sensitive to the polarization of incident waves.