Liquid Antennas: Past, Present and Future
Liquid Antennas: Past, Present and Future
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DOI：
10.1109/ojap.2021.3069325
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发表时间：
2021
影响因子：
4
通讯作者：
Yi Huang;Lei Xing;Chaoyun Song;Stephen Wang;Fatma Elhouni
中科院分区：
文献类型：
--
作者：
Yi Huang;Lei Xing;Chaoyun Song;Stephen Wang;Fatma Elhouni
液体天线作为天线家族的新成员，由于其独特的特性，越来越受到学术界和工业界的重视。本文对金属和非金属液体天线技术进行了综述。非金属液体天线又分为水基和非水基液体天线。我们首先回顾和比较了不同的液体天线，并强调了过去的主要发展。然后详细讨论了最先进的设计和当前的技术挑战，最后提出了未来的发展方向。特别对液体天线材料进行了深入的回顾和讨论，这在过去的文献中没有很好的覆盖，所选材料的重要性能在三个比较表中给出，可以作为天线材料选择的参考。结果表明，Galinstan材料可能是金属液体天线的最佳材料，而离子液体材料是介质液体天线的首选材料。确定并讨论了制造用于实际应用的液体天线所面临的挑战。人们相信，在无线电系统中实现液体天线可能指日可待。
The liquid antenna, as a new member of the antenna family, has drawn significant and increasing attention from both academia and industry due to its unique features. In this paper, a comprehensive review on this technology is presented which covers both metallic and non-metallic liquid antennas. Non-metallic liquid antennas are further divided into water-based and non-water-based liquid antennas. We first review and compare different liquid antennas and highlight the major developments in the past. Detailed discussions on state-of-the-art designs and current technical challenges are then presented, and finally the ways forward for the future are suggested. As a special feature, an in-depth review and discussion on materials for liquid antennas are provided which was not well covered in the literature in the past, important properties of selected materials are given in three comparison tables which can serve as antenna material selection references. It is shown that Galinstan is probably the best choice for metallic liquid antennas while ionic liquid materials are the preferred choice for dielectric liquid antennas. The challenges of making the liquid antenna for real-world applications are identified and discussed. It is believed that a liquid antenna implemented in radio systems is probably just around the corner.