Anisotropic Metasurface for Realizing Cross Polarization Conversion based on a Symmetry Breaking Meta-Structures

Abstract

In this research, we present the reflective cross-polarization conversion metasurface operating in the X- and Ku band of microwave frequencies. The proposed polarization converting device comprises a cross-shaped meta-structure surrounded with a split ring resonator. We have numerically calculated and showed that the proposed metasurface manifests 90% PCR in the operating band from 8.5-16 GHz. It is noticed that the outer split ring resonator is the main contributor in enhancing the cross-component of the reflected wave, which rotates the incident wave into its orthogonal counterpart. Furthermore, it can also be scalable to other operating bands by carefully selecting the materials and optimizing the design parameters. This kind of reflective meta-device would be prudent for the applications of beam reflectors, antennas, and holography.