期刊
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
卷 63, 期 4, 页码 1042-1047出版社
WILEY
DOI: 10.1002/mop.32675
关键词
liquid permittivity measurement; microwave microfluidic sensor; microwave multi-resonator
This paper presents a new type of microwave microfluidic sensor using three separate half wave microstrip resonators with resonant frequencies of 2.5, 3.5, and 4.5 GHz. The sensor demonstrates advantages of microwave resonant methods for dielectric liquid characterization such as high precision, accuracy, and sensitivity across a wideband of frequencies. Experimental results for testing with water, methanol, ethanol, and chloroform show excellent agreement with simulation results.
In this paper, a new type of microwave microfluidic sensor is presented, using three separate half wave microstrip resonators with a common junction. The sensor comprises three parallel resonators with resonant frequencies of 2.5, 3.5, and 4.5 GHz. This sensor exhibits all the usual advantages of microwave resonant methods for dielectric liquid characterization, such as high precision, accuracy, and sensitivity, but here also over a wideband of frequencies. The resonators have common input and output ports. The sensor was tested using several types of liquids, including water, methanol, ethanol, and chloroform, and experimental results are in excellent agreement with the simulation results.
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