An Ultra-Wideband Textile-Based Perfect Superstrate Metamaterial Absorber for 6G Applications

Abstract

This paper presents an ultra-wideband textile-based perfect Metamaterial absorber for 6G applications. The design geometry of the unit cell is based on a modified split ring resonator and optimized akin to the word 6G. It enables a wideband in sub-THz at the standard of FCC. The structure consists of three layers; the ground layer, the textile layer, and MTM resonators. The two resonators are 6G and L shaped. The structure is optimized in terms of the different dimensions of both resonators. For more enhancement of the absorptivity band, superstrate textile material is added on top of the resonator's structure. It enhances the band by 6 %. The structure is subjected to different angles of incidence to study the sensitivity of the absorber to that angle. It contributes a bandwidth of 17.135 GHz up to 30 degrees and an FWHM of more than 33.332 GHz up to 45 degrees. The textile material used is felt having a permittivity of 1.27, thickness of 0.6 mm, and tangent loss of 0.016. The overall size of the absorber is 2.4 mm x 2.4 mm x 1.27 mm. © 2023 IEEE.