S-shaped Metamaterial Absorber for K-band Applications

This work represents the design of an S-shaped metamaterial absorber for K-band applications. The planned metamaterial can absorb incident waves from 20.99 - 21.51 GHz and 24.2 - 25.02 GHz with more than 86% absorbance. The anticipated structure is compact, having an overall area of 7 x 7 mm ² . The construction is designed on the FR4 substrate, and the simulation and optimization are carried out using CST microwave studio software. The unique features of the engineered metamaterial, such as its compact design, sub-wavelength nature, and super-resolution that is not found in conventional resources, make it a suitable contender for K-band applications, including satellite and radar communication systems.