USING OF GUNN DIODE BASED SELF-OSCILLATOR IS STABILISED BY QUASI-OPTICALDIELECTRIC RESONATOR FOR DETERMINATION OF DIELECTRIC PARAMETERS OF LIQUIDS

摘要

While measuring complex permittivity of media by resonator methods is used measuring of resonator frequency and its Q-factor if it is filled with reference and measuring media [I]. If measuring complex permittivity of heavy absorbing media the resonator is filled partially of investigated media [2]. At that on changing of frequencies resonator is stabilized by resonator and filled with reference and measuring media the.values of real and imaginary parts of permittivity are determined., For the imaginary part of permittivity measuring is used measuring of signal level is passed through the resonator is partially filled with investigated media or changing of resonator Q-factor which estimated as bandwidth.