Abstract
We propose the design, simulation, and measurement of a broadband reflective metamaterial polarization rotator in the microwave region based on multiple plasmon resonances. An utra-thin wideband polarization conversion composing of arrays of oval ring pattern, a dielectric layer and a continuous metallic layer is further demonstrated both numerically and experimentally. Two plasmon resonances are generated by magnetic and electric resonances, leading to bandwidth expansion of cross-polarization reflection. The simulated results show that the polarization conversion ratio (PCR) is greater than 68.6% in 8.0–18.0 GHz with incidence angle up to $30^{\circ}$ for both $y$ -and $x$ -polarized waves and the maximum conversion efficiency is nearly 100% at the two plasmon resonance frequencies. Experimental results under normal and oblique incidence agree well with simulated ones. The proposed rotator has applications in the area of polarization control.
Published Version
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