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Deformable Liquid Metal Patch Antenna for Air Pressure Detection
IEEE Sensors Journal ( IF 4.3 ) Pub Date : 2020-04-15 , DOI: 10.1109/jsen.2019.2961514
Jen-Hahn Low , Pei-Song Chee , Eng-Hock Lim

For the first time, a deformable liquid metal patch, which is loaded with an air cavity underneath, is proposed for designing an air pressure-detecting antenna. Both the liquid metal (EGaIn) and air cavity of the antenna structure are constructed inside a soft and deformable polydimethylsiloxane (PDMS) substrate. Since liquid metal is highly dense, a PDMS pillar is tactfully embedded into the air cavity region for supporting the liquid patch. Due to the use of such structural support, the liquid metal patch can now be made into one whole piece and it does not cause the antenna structure to collapse. The proposed antenna structure does not require the use of microfluidic channels, which usually compromise the radiation performances, for designing the liquid metal patch. As a result, it is able to attain a high antenna gain of 8.02 dBi. The existence of the air cavity has been proven to be crucial for making the antenna structure deformable so that it is useable for detecting ambient air pressure.

中文翻译:

用于气压检测的可变形液态金属贴片天线

首次提出了一种可变形液态金属贴片,其下方装有空气腔,用于设计气压检测天线。天线结构的液态金属 (EGaIn) 和气腔都构建在柔软且可变形的聚二甲基硅氧烷 (PDMS) 基板内。由于液态金属密度很高,因此将 PDMS 柱巧妙地嵌入到气腔区域中,用于支撑液体贴片。由于采用了这种结构支撑,液态金属贴片现在可以做成一个整体,并且不会导致天线结构坍塌。所提出的天线结构不需要使用通常会影响辐射性能的微流体通道来设计液态金属贴片。因此,它能够获得 8.02 dBi 的高天线增益。
更新日期:2020-04-15
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