Broadband RCS Reduction Based on Parabolic-Phased Diffused Metasurface

Abstract

In this paper, a simple and efficient approach is proposed to achieve radar cross-section based on a parabolic-phased diffused metasurface. According to the phase compensation theory, the horizontal reflected plane can be fashioned into curved reflected surface by shaping the specific phase distribution, which could redirect the reflected electromagnetic (EM) wave into different directions. The phase distribution of the flat metasurface can be easily obtained by Matlab. Then, we can arrange the designed meta-atoms with different phase responses to achieve the parabolic phase. Both numerical and simulated results shows that our approach can efficiently reduce RCS and diffuse the reflected wave at a broadband frequency from 10.8-22GHz (-7dB).