A Simple Low Profile Polarization Rotation Reflective Surface for RCS Reduction of Patch Antenna

This paper proposes a simple triangle-shaped electromagnetic wave polarization rotation reflective surface (PRRS) for radar cross section (RCS) reduction of patch antenna over a wide band. It is possible to achieve a decrease in RCS in the frequency region of 13.2-17.9 GHz by placing the PRRS circling the patch antenna in directions that are orthogonal to one another. The simulation results indicate that the intended PRRS dramatically reduces the antenna RCS. The polarization rotation property of the proposed structure is verified experimentally. The suggested polarization converter has a very simple geometry in comparison to the existing designs.