Design of polarization-insensitive polarization converter based on frequency selective surface

In this work, a transmission-type polarization-insensitive cross-polarization converter (CPC) based on frequency selective surface (FSS) is proposed. In order to obtain highly efficient transmissive cross-polarization conver-sion by the single-layered-substrate structure, the FSS-based CPC structure utilizes the substrate integrated waveguide design. With the linearly polarized incident wave at arbitrary azimuth, the CPC can convert it to the cross-polarization state. The proposed FSS-based CPC has been fabricated, and the experimental results show that the peak cross-polarization conversion ratio at the operating frequency reaches up to -0.27 dB, which is in excellent agreement with the numerical simulation results and theoretical predictions.

Automated summary

In this work, a transmission-type polarization-insensitive cross-polarization converter (CPC) based on frequency selective surface (FSS) is proposed. The FSS-based CPC utilizes the substrate integrated waveguide design to achieve highly efficient transmissive cross-polarization conversion. Experimental results demonstrate excellent agreement with numerical simulation results and theoretical predictions, with a peak cross-polarization conversion ratio of -0.27 dB at the operating frequency.