| 摘要 |
A method of measuring the dielectric constant of a sheet-like material is disclosed, the method using a cavity resonator having a transverse slit formed in the intermediate region thereof between the opposite ends for disposing a sample sheet perpendicularly to the direction of the length thereof. The dielectric constant is measured as a function of the difference f1r-fr2 between the microwave resonant frequency f1r of the cavity resonator obtained when the sample is not inserted in the transverse slit and the microwave resonant frequency fr2 of the cavity resonator obtained when it is inserted in said transverse slit. The resonant frequency f2r ( beta ) is calculated in the state in which the sample sheet in said transverse slit is rotated through a given angle beta with respect to said longitudinal axis from the predetermined angle designated by 0 DEG , from the formula approximating the resonance curve in the cavity resonator.
|
