材料科学
液态金属
极化(电化学)
光学
光电子学
聚对苯二甲酸乙二醇酯
电介质
天线(收音机)
微带天线
复合材料
电气工程
物理
工程类
化学
物理化学
作者
Cong Wang,Joo Chuan Yeo,Hui Chu,Chwee Teck Lim,Yong‐Xin Guo
标识
DOI:10.1109/lawp.2018.2827404
摘要
A polarization-agility antenna using liquid metal (eutectic gallium indium) with high radiation efficiency is proposed in this letter. This design approach offers possibilities to use the minimum amount of liquid metal as well as elastomer, so that a higher-radiation-efficiency liquid metal antenna can be realized. The proposed design is based on an aperture-coupled patch antenna composed of both liquid metal alloy and copper tape. The polarization of this antenna is controlled by the position of the pressure-driven liquid metal encased in four triangle cavities constructed by both the elastic dielectric material (i.e., Ecoflex) and polyethylene terephthalate film. A prototype is demonstrated with a center frequency of 2.45 GHz. Three kinds of polarization including left-hand circular polarization, right-hand circular polarization, and linear polarization are successfully demonstrated. A radiation efficiency higher than 90% is observed in the measurement.
科研通智能强力驱动
Strongly Powered by AbleSci AI