A frequency and polarization reconfigurable frequency selective surface based on liquid crystal

In this paper, a new type of frequency and polarization reconfigurable FSS (Frequency selective surface) is designed. By using liquid crystal material, the frequency of the FSS can be reconfigured. The dipole sub-module is used. The upper and lower dipoles separated by the dielectric substrate are orthogonal to each other. The adjacent short-term dipole passes PIN diodes connected, and the switch of the dipoles controls the polarization selection of FSS in the passband. The experimental results show that the FSS can select the TE and TM waves, and the polarization selection and reconfiguration characteristics are obvious.