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A double-band circular polarizer based on novel e-shape resonators is proposed and studied numerically. At two resonant frequencies, i.e., 11.65 GHz and 13.02 GHz, the incident linearly polarized wave can be transformed into left/right-handed circularly polarized waves, respectively. The proposed polarizer transmits a nearly pure circularly polarized wave, with the polarization extinction ratio more...
A tri-layered chiral metasurface is proposed and demonstrated to exhibit broadband asymmetric transmission of linearly polarized electromagnetic waves in two opposite directions. The full wave simulation shows that the proposed metasurface can rigorously satisfy the asymmetric transmission (AT) theorem and can achieve cross-polarization conversion with high efficiencies for linearly polarization waves...
In this paper, we propose a chiral metamaterial structure that enables a dual-band 90° polarization rotator effect. The bilayered chiral metamaterial is composed by twisted different size “V” antenna resonators in four-fold rotation symmetry. Analysis also shows that such asymmetric twist structure can contribute to the induced asymmetric transmission which support strong optical activity. By scaling...
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