Design of an Ultra-Wide-Angle Reflective Polarization Conversion Metasurfaces

A design of ultra-wide-angle reflective polarization conversion metasurfaces (PCM) is realized by using bi-layered metasurfaces backed with metal ground. The upper layer of the element is an asymmetric cross-shaped structure, and the lower layer is composed of four uniformly arranged square patches. The simulated results show that this polarization rotator can well interchange between TE (the electric field is parallel to the y direction) waves and TM (the magnetic field is parallel to the y direction) waves around 5.04 GHz in the incident angle range from -80° to +80° and polarization conversion ratio(PCR) is above 80%.