This article presents a pattern‐and frequency‐reconfigurable antenna based on movable liquid metal. The proposed antenna mainly consists of a printed three‐element Yagi‐Uda structure whose two parasitic elements are loaded with slots in the middle. Six movable liquid metal poles are filled in the microfluidic channels, which adhered to the surface of the three radiating arms of the Yagi‐Uda antenna. By moving these liquid metal poles, the slots can be shorted or opened and the equivalent electrical lengths of the director and fed‐dipole can be changed, thus adjusting the antenna in radiation pattern and frequency. As a result, this antenna can work at different states, which are mainly classified into five modes. To verify this design concept, a prototype of the proposed antenna is fabricated and measured. The measured results indicate that the antenna can operate in the frequency range from 1.52 to 3.2 GHz, and the peak gain can reach 7.3 dBi.

中文翻译：

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使用液态金属的模式和频率可重构天线

本文介绍了一种基于可移动液态金属的模式和频率可重构天线。拟议的天线主要由印刷的三元素八木宇田结构组成，其两个寄生元件在中间装有缝隙。六个可移动的液态金属极填充到微流体通道中，该微流体通道粘附在Yagi-Uda天线的三个辐射臂的表面上。通过移动这些液态金属极，可以缩短或打开缝隙，并可以改变指向矢和馈电偶极的等效电气长度，从而调整天线的辐射方向图和频率。结果，该天线可以在不同的状态下工作，这些状态主要分为五种模式。为了验证该设计概念，制造并测量了所建议天线的原型。