Abstract
In this paper, four different AMC unit cells are designed to realize the RCS Reduction. For broadening the bandwidth of RCSR, the concept of phase compensation is adopted based on the conventional chessboard theory. The characteristics of the four AMC units are analyzed separately, meanwhile, the concept of coding metamaterials was also introduced, which named the four AMC units as “1” cell, “2” cell, “3” cell, and “4” cell, respectively. At the same time, the optimization algorithm is applied to obtain the optimal array of surrounding configuration, thus achieving an ultra-wideband RCS reduction. The simulation results show that the optimized coding metasurface can realize at least 6 dB RCS reduction in the frequency range from 8GHz to 22GHz when the planewave incidents vertically. This design has a good application prospect for achieving the electromagnetic stealth performance of the target.
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