Broadband RCS Reduction Design Based on Efficient Polarization Conversion Surface

In this paper, a hypersurface structure with wideband RCS reduction performance is proposed. The designed unit has high polarization conversion efficiency, and the hypersurface is composed of classical checkerboard array periodic arrangement, which can achieve excellent RCS reduction index in the wide band. The simulation results show that in the electromagnetic wave phase incidence, the RCS reduction effect of the designed $8\times 8$ array exceeds 10dB within the 9GHz-22GHz frequency band, and the RCS reduction exceeds 20dB at the GHz frequency point.