Frequency tunable liquid metal on paper microstrip patch antenna

材料科学 液态金属 微带天线 贴片天线 天线(收音机) 微带线 光电子学 制作 光学 复合材料 电气工程 物理 工程类 医学 病理 替代医学
作者
Daeyoung Kim,Seok Joo Doo,Sang Kug Chung,Jeong‐Bong Lee
出处
期刊:AIP Advances [American Institute of Physics]
卷期号:13 (3) 被引量:5
标识
DOI:10.1063/5.0139901
摘要

We report a liquid metal microstrip antenna on a printing paper whose resonant frequency was tunable by folding the paper. The gallium-based alloy was used as liquid metal, which is instantly oxidized in ambient air. The oxidized liquid metal is easily wettable on printing paper surfaces, while it is non-wettable on laser-printed toner surfaces. An antenna with a 3 mm wide and 39 mm long copper-liquid metal overlapped-feedline linked to the liquid metal microstrip rectangle-shaped patch (40 × 31 mm2) was designed. The antenna pattern was printed on a printing paper using a laser printer. A liquid metal soaked roller was rolled on the antenna pattern printed paper, resulting in a liquid metal pattern where there was no toner. The resonant frequency of the liquid metal on the paper microstrip patch antenna was 2.88 GHz with −18.5 dB S11. The measured characteristics of the antenna were in good agreement with the simulation results. When the antenna was folded, the resonant frequency was changed to 2.68 GHz (x-axis folding) or 2.72 GHz (y-axis folding). Liquid metal on paper fabrication is simple but effective for creating custom-designed antennas that are easily re-designed and fabricated in the field.
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