Broadband wire grid polarizer application in millimeter wave frequency

This paper presents a wire grid polarizer (WGP) working at the frequency ranges between 1 GHz to 500 GHz. The WGP is extensively used in polarization sensitive elements for separating different polarized signals at the same channel. The spacing pitch-to-width ratio should be chosen seriously for lower cross polarization levels in double polarizers. The influences between single and double layers WGP are also discussed simultaneously. The single layer simulation results of reflectance and transmittance coefficients are more than 0.96 in double polarization directions, which has been fabricated successfully. The double layers WGP can improve obviously the reflection coefficient and make the transmission coefficient oscillated.