In this article, we demonstrate a reconfigurable antenna concept based upon a film of vanadium dioxide (VO₂) with embedded metallic surface inclusions to increase radiation efficiency. We fabricate a monopole antenna with the proposed film, demonstrate a good match between measurement and simulation, and propose methods for increasing performance. We show that the addition of metallic inclusions in the VO₂ film results in a 37‐fold increase in the radiation efficiency. This concept, if paired with a spatially addressable micro‐heater array, could enable extremely flexible and low‐loss frequency‐agile cognitive radio antennas for dynamic spectrum applications as well as polarization and pattern reconfiguration for operation in 5G and beyond systems where spectrum is congested and coexistence is compulsory.

中文翻译：

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带金属夹杂物的VO2天线用于低损耗可重构认知无线电

在本文中，我们演示了一种基于可重构天线的概念，该概念基于具有嵌入的金属表面夹杂物的二氧化钒（VO ₂）薄膜，以提高辐射效率。我们用所提出的薄膜制造单极天线，展示了测量与仿真之间的良好匹配，并提出了提高性能的方法。我们表明VO _2中添加了金属夹杂物薄膜可使辐射效率提高37倍。该概念与空间可寻址的微型加热器阵列配合使用，可以为动态频谱应用提供极灵活且低损耗的频率捷变认知无线电天线，以及在频谱拥塞的5G及更高系统中运行的极化和方向图重新配置并存是强制性的。