A rigorous analysis of a TM/sub 010/ mode cylindrical cavity to measure accurate complex permittivity of liquid

摘要

A rigorous analysis for a TM/sub 010/ mode cylindrical cavity with insertion holes is presented on the basis of the Ritz-Galerkin method to realize accurate measurements of the complex permittivity of liquid. The effects of sample insertion holes, a dielectric tube, and air-gaps between a dielectric tube and sample insertion holes are taken into account in this analysis. The validity of this method is verified from measured results of some kinds of liquid.