液态金属无源柔性传感天线

In this paper, a new type of liquid metal flexible sensing antenna is designed.The liquid metal uses EGaIn, which has a melting point of -19℃ and is liquid at room temperature.The flexible dielectric material PDMS is used as a liquid metal container due to its excellent elasticity and stretchability.The center part of the container is an empty cavity, which is used to store the liquid metal as the radiator of the antenna. The left microchannel of the cavity is the inlet and outlet of the liquid metal, and the microchannel structure designed on the right is used to change the resonant frequency of the antenna to achieve the effect of pressure induction.In order to ensure the independence and integrity of the radiating part of the liquid metal antenna, electromagnetic coupling probe is used for feeding, and the electromagnetic simulation software CST is used to optimize the feeding position to achieve a good matching effect. We use CST to simulate its sensing performance, and the results demonstrate that liquid metal antennas can be used as flexible sensors.