NONDESTRUCTIVE MEASURING METHOD AND DEVICE FOR COMPLEX DIELECTRIC CONSTANT

摘要

PROBLEM TO BE SOLVED: To nondestructively measure the complex dielectric constant of a loss dielectric in microwave and milli-wave regions with a simple device.;SOLUTION: The dielectric of a measurement object is inserted into a dielectric interpolation section 2 formed with a flanged waveguide fitted with a flange on the opening section of the waveguide, the dielectric is pressed by two flanged waveguides, and the reflection coefficient of one opening face and the transmission coefficient of the other opening face are measured by a reflection/ transmission characteristics measuring device 1. The absolute values of the measured reflection coefficient and transmission coefficient and phase angles are substituted in simultaneous equations derived by solving Maxwell equation to calculate the dielectric constant of the dielectric. Since the reflection coefficient and the transmission coefficient in this structure correspond to the dielectric constant by one-to-one, the complex dielectric constant can be easily obtained by utilizing this relationship.;COPYRIGHT: (C)2002,JPO