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A Reconfigurable Polarization Converter Based on Active Metasurface

机译：基于有源超表面的可重构偏振转换器

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摘要

We present a reconfigurable polarization converter which is composed of an active metasurface and a dielectric plate backed with metallic gratings. The unit cell of the active metasurface is a butterfly-shaped structure embedded with voltage controlled varactor diodes. By controlling the bias voltage of the varactor diode, the proposed polarization converter is able to switch its functions between linear polarization converter and circular polarization converter. For biased voltage of OV, the proposed device acts as a linear polarization converter; whereas for the bias voltage of -19 V, it is switched to be a circular polarization converter.
机译：我们介绍了一种可重构的偏振转换器，该偏振转换器由主动元表面和金属光栅背衬的电介质板组成。主动元表面的单元电池是嵌入电压控制变容二极管的蝶形结构。通过控制变容二极管的偏置电压，所提出的偏振转换器能够在线性偏振转换器和圆极化转换器之间切换其功能。对于OV的偏置电压，所提出的装置用作线性极化转换器;虽然对于-19 V的偏置电压，它被切换为圆极化转换器。

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