Compact, broadband, wide angular stable circuit analog absorber at sub‐6 <scp>GHz</scp> for <scp>radar cross section</scp> reduction
Mohammad Abdul Shukoor, Sukomal Dey
Abstract
Abstract This work presents a compact broadband wide angular stable polarization‐insensitive circuit analog absorber at sub 6 GHz. It shows almost 95% absorption from 2.26 to 5.76 GHz over the entire operating range. A transmission line equivalent circuit is modeled, and the response is validated. The design is obliquely stable up to 45° for both transverse electric and transverse magnetic incidences. The analysis of surface current distributions at two resonant frequencies confirming magnetic resonances' role in near‐unity absorption. It is compact with a periodicity of 0.1 λ L and thickness of 0.08 λ L . Finally, bistatic radar cross section reduction of the proposed absorber attached with an antenna is measured.