A Stretchable Liquid Metal Coaxial Phase Shifter
A Stretchable Liquid Metal Coaxial Phase Shifter
复制标题
可拉伸液态金属同轴移相器
DOI：
--
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发表时间：
2021
影响因子：
4
通讯作者：
N. Jackson
中科院分区：
文献类型：
--
作者：
David M. Hensley;C. Christodoulou;N. Jackson
本发明提供了一种可拉伸液态金属同轴移相器，其由液态金属中心导体、中空圆柱体形状的液态金属屏蔽件和可拉伸橡胶基聚合物（Ecoflex™00-30）构成，所述可拉伸橡胶基聚合物包围并绝缘液态金属。该设计基于并增强了以前的研究，该研究由相同的液态金属移相器组成，但屏蔽层由五根手工编织的液态金属线组成。通过修改屏蔽层的设计，使其由空心圆柱体而不是编织股线组成，减少了高频下的TEM击穿，移相器提高了其在高频下的透射和反射系数。原型测试结果显示，在40 mm拉伸（62%）和1 GHz至4 GHz频带下，透射系数（S21）优于−1.8 dB，反射系数（S11）优于−10 dB。
Presented is a stretchable liquid metal coaxial phase shifter constructed of a liquid metal center conductor, a liquid metal shield in the shape of a hollow cylinder, and a stretchable rubber-based polymer (Ecoflex™00-30) which encases and insulates the liquid metal. The design builds on and enhances previous research consisting of the same liquid metal phase shifter but with the shield consisting of five hand-woven liquid metal strands. By modifying the design of the shield to consist of a hollow cylinder rather than woven strands, TEM breakdown at high frequencies is decreased, and the phase shifter improves its transmission and reflection coefficients at higher frequencies. Prototype results show a transmission coefficient (S21) better than −1.8 dB and a reflection coefficient (S11) better than −10 dB with a 40 mm stretch (62%) and a frequency band of 1 GHz to 4 GHz.