Design of Ultra-Broadband RCS-Reduction Checkerboard Surface Using AMC Circuit Model

A design procedure is introduced where a refined algorithm is developed and employed on single-band AMCs leading to a 10-dB RCS-reduction bandwidth of 80%. The AMC circuit model is utilized cleverly to reduce the substrate thickness while simultaneously increasing the bandwidth of AMC surfaces. Furthermore, dual-band AMC surfaces are synthesized and utilized in combination with single-band AMC surfaces to extend the 10-dB RCS-reduction bandwidth from 80% to about 99%.