An Ultrawideband All-Textile Metamaterial Absorber for Ku-, K-, and Ka-Band Applications

An all-textile metamaterial absorber is proposed for Ku, K and Ka band applications. The proposed metamaterial absorber is based on square-shaped split ring resonators. The design parameters are chosen based on commonly used electronic textile (E-textile) and felt dielectric material. The proposed structure demonstrates has a high absorption property of >90% between 13.1 GHz and 31.13 GHz. At the same time, it reaches 99% absorption value between 16.4 GHz and 21 GHz. The textile metamaterial absorber features the advantages of ultra-wideband operability, angular stability and polarization insensitivity. A proof-of-concept all-textile metamaterial absorber prototype has been fabricated and its simulation performance has been confirmed successfully by measurements. The results obtained are promising for the development of e-textile-based applications such as energy harvesting, camouflage systems, sensitive wearable electronics, health monitoring and electromagnetic shielding.