Improved Cavity Resonance Method For Nondestructive Measurement Of Complex Permittivity Of Dielectric Plate

摘要

An improved cavity resonance method is proposed to measure the complex permittivity of dielectric plate sample nondestructively. A plate sample is clamped by two halves, into which a cavity is cut at the center. The effect of the fringing field is accurately calculated by the Ritz-Galerkin method.