High Efficiency Anisotropic Metamaterial Reflector for Cross Polarization Conversion

Polarization control plays a significant role in various scientific and engineering applications such as communication, optical sensing, and molecular biology. However, traditional methods like the Faraday Effect and Birefringence are limited by narrow bandwidths and large sizes. This paper is presenting the design of a broadband, high-efficiency anisotropic metasurface reflector for cross-polarization conversion, addressing these limitations. The metasurface, composed of square split-ring resonators, demonstrates an exceptional polarization conversion ratio (PCR) exceeding 95% for linearly polarized incident waves in the range frequency of 8-20 GHz. The suggested metasurface attains almost 100% conversion of cross-polarization at the resonance frequencies (9.30 GHz, 13.69 GHz, and 18.48 GHz), according to experimental results. This metasurface works very well for broadband applications that need to control polarization precisely.