Design of a Transparent Metamaterial Cross Polarization Converter With Large Incident Angle Range

In recent years, the metamaterial has become a popular and powerful tool in the electromagnetic polarization conversion design. In this paper, a flexible and transparent broadband cross-polarization-converter (CPC) was designed, fabricated and tested. ANSYS HFSS was used for the cross-polarization-converter simulation, and the Floquet port and master-slave boundary condition were set in the software. The multi-layer split-ring-resonator (SRR) structure was used to form the metamaterial for the CPC. As a result, >77% polarization conversion ratio (PCR) was achieved in the range of (7.8-18.2) GHz, with little change within 45° incident angle. The experimental results were consistent with the simulation data.