Design of Low Scattering Microstrip Antenna Based on Phase Gradient Metasurface

In order to reduce the scattering performance of the microstrip antenna, this paper designs a metasurface material based on the principle of phase cancellation and applies it to the microstrip antenna. After parameter optimization, the antenna can reduce RCS (Radar Cross Section) by 10dB in the 7.8GHz-14.4GHz frequency band without reducing the antenna's radiation performance. The electromagnetic metasurface designed in this paper can reduce the antenna RCS very well, and has certain application prospects.