This article presents a polarization-reconfigurable wideband high-gain antenna based on liquid metal tuning. The antenna consists of a center-feed circular patch antenna with a C-shaped slot as the driven element. To broaden the bandwidth and improve the realized gain, a parasitic circular disc and 13 circular directors are employed. The direction of polarization can be tuned by changing the location of the liquid metal alloy contained in the tube. The relationship between the dimensions and the maximally achievable gain has been analyzed. The antenna has exhibited a −10 dB impedance bandwidth from 4.3 to 5.3 GHz (a fractional bandwidth of 21.2%). A 14.4 dBi gain is achieved at 5.3 GHz. The simulation and measurement results show good agreement with each other.

中文翻译：

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一种使用液态金属调谐的极化可重构宽带高增益天线

本文介绍了一种基于液态金属调谐的极化可重构宽带高增益天线。天线由中心馈电圆形贴片天线组成，带有一个 C 形槽作为驱动元件。为了拓宽带宽并提高实现的增益，采用了寄生圆盘和 13 个圆形导向器。可以通过改变管中包含的液态金属合金的位置来调整极化方向。已经分析了尺寸与最大可实现增益之间的关系。该天线在 4.3 至 5.3 GHz 范围内具有 -10 dB 的阻抗带宽（21.2% 的部分带宽）。在 5.3 GHz 下实现了 14.4 dBi 增益。仿真和测量结果显示出良好的一致性。