NONDESTRUCTIVE MEASURING INSTRUMENT FOR COMPLEX DIELECTRIC CONSTANT

摘要

PROBLEM TO BE SOLVED: To nondestructively measure the complex dielectric constant of a loss dielectric in microwave and millimeter wave ranges by using a simple instrument. ;SOLUTION: The dielectric 35 to be measured is inserted between waveguides 33 and 44 having flanges mounted on their opening parts and a conductor plate 36 and pressed by the waveguides with the flanges and the conductor plate, and the reflection coefficient of the opening parts are measured a reflection characteristic measuring instrument. The absolute value of the measured reflection coefficient and a phase angle correspond to the dielectric, one to one, so the complex dielectric constant can easily be found by using this relation.;COPYRIGHT: (C)2001,JPO