Coaxial Reflection Probe for Measurements of Temperature and Frequency Dependent Dielectric-properties of Low-loss Liquids

摘要

An existing measurement coaxial reflection probe suitable for measurements of frequency dependent dielectric properties of low-loss liquids was adapted here. A number of modifications made here led to an improved measurement performance in terms of significantly easier evaluation of LUT dielectric properties as well as easier probe handling. Furthermore, the probe was equipped here with a heat exchanger. Therefore, it is possible to measure dielectric properties of LUT at different temperatures. Measurements of different liquids with known dielectric properties, so called standard liquids were performed as well. A comparison of the here evaluated values of dielectric properties of the standard liquids with data published in professional literature verified here presented probe geometry and measurement procedure.