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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Realization of bifunction: dual-band absorption and broad band polarization conversion by zigzag birefringent reflective metamaterial
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Realization of bifunction: dual-band absorption and broad band polarization conversion by zigzag birefringent reflective metamaterial

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In this paper, we propose and fabricate a kind of zigzag birefringent reflective metamaterial, the surface of which is a 1D rough surface. It can realize both multiple absorption and broadband polarization conversion at different frequency ranges of microwave. This metamaterial is made of a ring-shaped metal piece that is deposited on one side of a piece of grounded zigzag dielectric substrate. The absorptivities are 99.4 and 97.3 at 3.32 and 6.87 GHz respectively, and the polarization conversion ratio is more than 90 from 8.43 to 11.55 GHz, when the incident wave illuminates the sample with different polarization angles. A bifunctional device based on this metamaterial can act as either an absorber or a polarizer. This work is of significance to study the electromagnetic properties of rough surface metamaterials and provides an encouraging example in metamaterial design for combining different functions into one device.

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