A W-band Reflective Electromagnetic Polarization Twisted Metasurface

This paper designs a reflective electromagnetic polarization twisting metasurface operating in the W-band. This metasurface obtains metasurface units by designing and optimizing the open ring structure on the surface of the medium, and obtains a metasurface structure that can realize electromagnetic polarization torsion through the periodic arrangement of the units. Simulation and testing have shown that the metasurface structure can achieve orthogonal twisting of electromagnetic wave polarization within a range of 30° between the incident electromagnetic wave and the normal line of the reflecting surface, and the operating frequency range is 85GHz-100GHz. And the reflection loss in the working frequency band is less than 0.5dB. This design provides a new solution and idea for the study of electromagnetic polarization torsion structures..