Pattern Reconfigurable Antenna Based on Liquid Metal

2022 IEEE 9th International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE) Pub Date : 2022-08-26 DOI:10.1109/MAPE53743.2022.9935225

Yiyue Guo, M. Su, Yuan’an Liu

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Abstract

In this paper, a pattern reconfigurable antenna based on liquid metal is proposed. The metal reflector of the antenna is replaced by two transparent PC(Polycarbonate) channels. The state of the antenna reflector is changed by injecting liquid metal into different transparent PC channels through the pressure pump, so as to provide four pattern modes. The four modes bring three main beam directions of – 48°, 0° and 44° respectively. When the main beam direction is 0, the two modes can provide different half power beam widths. The half power beam width of the other two modes with deflection in the main beam direction can be maintained above 80 ° and the gain can be maintained above 6dB. The working center frequency of the antenna is 2.6GHz, the impedance bandwidth is 220MHz, and the isolation is more than 20dB. Results show that the proposed liquid patch antenna produces a satisfactory impedance matching, and a good agreement between simulation and measurement in terms of radiation characteristics is achieved at the desired frequency. This kind of antenna can be widely used in communication base in the future.

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基于液态金属的方向图可重构天线

提出了一种基于液态金属的方向图可重构天线。天线的金属反射面被两个透明的PC(聚碳酸酯)通道所取代。通过压力泵将液态金属注入不同的透明PC通道，从而改变天线反射器的状态，从而提供四种模式。四种模式分别产生- 48°、0°和44°三个主波束方向。当主波束方向为0时，两种模式可以提供不同的半功率波束宽度。另外两种偏转于主波束方向的模式，其半功率波束宽度可保持在80°以上，增益可保持在6dB以上。天线的工作中心频率为2.6GHz，阻抗带宽为220MHz，隔离度大于20dB。结果表明，所设计的液体贴片天线具有良好的阻抗匹配，在期望频率下的辐射特性与仿真结果吻合较好。这种天线在未来的通信基地中具有广泛的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 IEEE 9th International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE)

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