Improved Cavity Perturbation Technique for Accurate Measurement of Complex Permittivity

Abstract

Cavity perturbation method is traditionally simple and accurate technique to detect a material although completely a few techniques have been developed for the measurement. But there have the problems that is the change in the total geometric form of the electromagnetic fields inside the cavity resonator. Using a new cavity perturbation technique proposed in this paper, we calculate the complex permittivity of dielectric material. And then we more expanded the maximum volumes of the sample ratio to cavity resonator than the conventional cavity perturbation technique.