Highly sensitive RF sensor based on microstrip meander line for measuring microfluidics dielectric properties of alcohol–alcohol mixtures

IF 1.4 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Microwave and Wireless Technologies Pub Date : 2023-10-18 DOI:10.1017/s1759078723001113

Huan Zou, Yiyun Wang, Xiaoqin Liu, Haiyang Wang

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引用次数: 0

Abstract

Abstract In this paper, a radio frequency sensor for measuring microfluidics dielectric properties is designed based on microstrip meander line. The meander sensor replaces the straight transmission lines with meander transmission lines in the part of the half-wavelength path difference to improve the sensitivity of the sensor and reduce its size. According to the experimental results, the meander sensor based on the meander line has higher accuracy and a lower relative error than the straight sensor in measuring methanol–ethanol mixtures with different molar fractions. The relative error measured by the meander sensor after calibration with an adjustable cavity is less than 1%. It is easier to detect the very slight variation in dielectric properties brought about by microfluidics. The detection technique can be further applied for the accurate detection of dielectric properties of valuable biological samples, providing a more concise and convenient way.

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基于微带弯曲线的高灵敏度射频传感器用于测量酒精-酒精混合物的微流体介电特性

摘要本文设计了一种基于微带曲线的微流体介电特性测量射频传感器。弯曲传感器在半波长程差部分用弯曲传输线代替直线传输线，提高了传感器的灵敏度，减小了传感器的尺寸。实验结果表明，基于曲流线的曲流传感器在测量不同摩尔分数的甲醇-乙醇混合物时，具有较高的精度和较低的相对误差。用可调腔标定后测得的相对误差小于1%。微流体引起的介电特性的微小变化更容易检测。该检测技术可进一步应用于有价值生物样品介电性质的准确检测，提供了一种更简洁、方便的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Microwave and Wireless Technologies ENGINEERING, ELECTRICAL & ELECTRONIC-TELECOMMUNICATIONS

CiteScore

3.50

自引率

7.10%

发文量

130

审稿时长

6-12 weeks

期刊介绍： The prime objective of the International Journal of Microwave and Wireless Technologies is to enhance the communication between microwave engineers throughout the world. It is therefore interdisciplinary and application oriented, providing a platform for the microwave industry. Coverage includes: applied electromagnetic field theory (antennas, transmission lines and waveguides), components (passive structures and semiconductor device technologies), analogue and mixed-signal circuits, systems, optical-microwave interactions, electromagnetic compatibility, industrial applications, biological effects and medical applications.