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 and 31.13 GHz. At the same time, it reaches 99% absorption value between 16.4 and 21 GHz. The textile metamaterial absorber features the advantages of ultrawideband 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.