A new design for an ultra-wideband microwave metamaterial absorber

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.

Automated summary

The proposed ultra-wideband microwave metamaterial absorber features a sandwich structure with a top metal pattern arranged periodically on a copper background. Combining Fe-Co composites and metamaterials, it effectively solves the narrow-band problem of microwave absorption, achieving over 90% absorptivity in the 2.16-18 GHz frequency band for normal incidence. The absorber's performance is not sensitive to the polarization of incident waves.