Wideband metasurface polarization converter with double-square-shaped patch elements

Abstract

In this paper, a wideband metasurface reflector that converts plane wave polarization to cross polarization with a double-square-shaped unit cell is proposed, and the principle of polarization conversion based on polarization synthesis is presented. The proposed structure has a unit cell with a longest dimension of 0.37 wavelengths, a width of 0.23 wavelengths, and a thickness of about 0.09 wavelengths. Using this structure, 95% or more of the incident wave power is converted to cross polarization, covering a fractional bandwidth of 32.4% at 8.5 GHz.