Generalised probe method to measure the liquid complex permittivity
Generalised probe method to measure the liquid complex permittivity
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DOI：
10.1049/iet-map.2019.1009
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发表时间：
2020-04
期刊：
影响因子：
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通讯作者：
Lei Xing;Jiajia Zhu;Qian Xu;Yongjiu Zhao;Chaoyun Song;Yi Huang
中科院分区：
文献类型：
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作者：
Lei Xing;Jiajia Zhu;Qian Xu;Yongjiu Zhao;Chaoyun Song;Yi Huang
提出了一种用于快速准确测量复介电常数的通用探针法。该方法是基于频域有限差分方法模拟的反射系数。建立了由未知材料的模拟复反射系数组成的数据库。采用快速搜索算法将测量的反射系数与数据库中的参考值进行匹配，从而得到液体的复介电常数。开发了一套室内测量系统。该系统的独特之处在于可以应用于任意形状的探头。对液体样品进行了测量，并与文献中发表的结果进行了比较。达成了良好的协议。这些结果对液体微波器件的设计和应用具有一定的指导意义。
A generalised probe method is proposed for fast and accurate complex permittivity measurements. The method is based on the simulated reflection coefficients using the finite difference frequency domain method. A database is set up, which consists of the simulated complex reflection coefficients of the unknown material under test. A fast searching algorithm is performed to match the measured reflection coefficients to the reference values in the database, thus the complex permittivity of the liquid can be obtained. An in-house measurement system is developed. The unique feature of this system is that it can be applied to an arbitrarily-shaped probe. Liquid samples are measured and the results are compared with that published in the literature. Good agreements are obtained. These results could be useful for liquid microwave component designs and applications.