Broadband RCS Reduction Based on Polarization Conversion Metasurface

A simple metasurface (MS) based on polarization conversion is proposed to achieve low radar cross section (RCS) over a large bandwidth. The unit cell can maintain the polarization conversion rate (PCR) over 90% from 9 to 22.8 GHz (13.8 GHz, 86.8
^%
). The MS can produce an 8 dB RCS reduction bandwidth of 8.1-22.8 GHz (14.7 GHz, 95.1
^%
). The proposed simple MS may be useful to realize stealth communication and stealth equipment.