Patent ID: 6496018
Filing Date: 2002-12-17
Classification: G01N,G01R

Abstract:
A dielectric constant measuring method employing a dielectric resonator operation in such a resonance mode that evanescent waves exude from the inner part of the dielectric resonator toward a sample measuring face side and comprising the following steps for obtaining the dielectric constant of a sample to be measured:(step 1) a step of arranging a sample measuring face of a single dielectric resonator arranged only on one side of a standard sample having a known dielectric constant under a fixed condition, appropriately varying the dielectric constant and/or the thickness of the standard sample for measuring a first change of the resonance frequency of the dielectric resonator with respect to each dielectric constant and/or thickness and acquiring a calibration curve of the first change of the resonance frequency depending on the dielectric constant and/or the thickness; (step 2) a step of measuring a second change of the resonance frequency by the dielectric resonator under the fixed condition as to the sample to be measured having a known thickness; and (step 3) a step of obtaining the dielectric constant of the sample to be measured from the measured value and the calibration curve.