Metasurface Reflector with Independent Polarizations Control using a Supercell Concept

A novel supercell concept is proposed to control the amplitude and phase of a metasurface reflector, independently for the two orthogonal polarizations, and is numerically demonstrated. The supercell concept is based on a fundamental unit cell that operates on one linear polarization only, which when spatially rotated by 90°, can be used to respond to the other orthogonal polarization. By spatially combining the unit cell and its spatially rotated version, a super cell is formed which can impart a desired reflection amplitude/phase to each of the polarizations without affecting the other.