Research on Full-phase Control and Angle Stability Based on Active Metasurface

This paper proposes an active full-phase tuned metasurface that is insensitive to incident angle, it realizes realtime control of reflection phase at different incident angles. A method of loading varactors between the patch gaps on the surface of the unit is used to constitute an active metasurface. This article adopts an asymmetric metal patch structure with loading side by side metallized holes to form a metasurface unit. Through simulation and experimental verification, this structure can provide 360° full range phase tuning capability and is insensitive to the size of the incident angle.