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A Novel checkerboard AMC surface for X-, Ku-and K-band RCS reduction

In this paper, the broadband radar cross-section (RCS) reduction using a checkerboard artificial magnetic conductor (AMC) surface is presented. The checkerboard configuration is formed by combining two improved Jerusalem cross cells with 180° (±30°) reflection phase difference over a broadband. For any normal incident plane wave in the operation band, the reflections of the surface cancel out due to the reflection phase difference, and thus RCS reduction is realized. Simulated results show that the proposed checkerboard surface possesses a −6-dB RCS reduction from 8.5 to 26.5 GHz for both vertical and horizontal polarizations, covering the X, Ku and K band.