Design of Compact Dual band Metamaterial Absorber using square and circular split rings for X-band and Ku-band Application

In Microwave frequency regime, a simple design has been presented for creating model of ultrawideband ultrathin metamaterial absorber. On metal-backed dielectric substrate, a suggested structure is imprinted which consists of two concentric split rings. In numerical solution under normal incidence, it has been observed that a 10-dB absorption bandwidth between 6.98 – 9.65 GHz. The structure being planned has absorptivities have been explored at various polarization angle. To analyze the absorption mechanism of suggested structure surface current plots and electromagnetic field distribution have been clarified. The suggested absorber has been assembled and experimental testing of its effectiveness at various polarization of incident electromagnetic wave. The intended absorber is small and provides a different way to build a wideband absorber for a variety of potential applications.