Dual-frequency linear-to-circular polarization converter with half transmission and half reflection based on SRR coupling metamaterial

A dual-frequency linear-to-circular polarization converter with half transmission and half reflection is designed using a single-layered metamaterial composed of coupled split ring resonators(SRRs) in this paper. The unit cell of this metamaterial structure include two pairs of coupled SRRs of different sizes, and is periodically arranged in plane. The simulated results show that the metamaterial designed can realize linear-to-circular polarization conversion and half transmission and half reflection at 4.34GHz and 5.97GHz simultaneously.