Microwave Polarizer Based on Complementary Split Ring Resonators Frequency-Selective Surface for Conformal Application

In this paper, a microwave polarizer based on frequency selective surface (FSS) loaded with complementary split ring resonator (CSRR) for non-planar and conformal application is presented. The frequency-selective fabricated liquid crystal polymer substrates (LCPs) material $50\mu \text{m}$ thickness, which shows very good mechanical flexibility band. Frequency-selective consists of metal FSS screen pair double resonators aligned in the vertical direction without any displacement. substrate integrated waveguide (SIW) cavity was introduced to enhance Q-factor CSRR particles strength screens at bending conditions. measured results show that CSSR-FSS minimum transmission loss TE-polarization incidence wave 0.75dB 10.24 GHz 19.05 dB TM-polarization wave, an extinction ratio 18.3dB. Finally, oblique from normal 60 degrees tests radius 9.8 cm 8.8 CSRR-FSSs were also carried out, indicate CSRR-FSS low susceptibility behavior small beyond different angles 45 degrees. Both simulated experiment data indicated proposed ultra-thin excellent polarization selectivity.