New method of debugging measurement errors due to small voltage variations on the Gunn diode for excellent measurement accuracy in the range 8.5 - 9.5 GHz

摘要

This present paper approaches the field of methods of measurement of electrical parameters of solid polymer materials, using new techniques to ensure high level accuracy as well as controlling and minimizing errors. To achieve this goal we designed an original measuring stand with a single microwave oscillator and two measuring arms. Using this measurement method, it is possible to control and eliminate the amplitude variations, depending on the frequency variations of the Gunn diode, so that for any microwave frequency range 8.5 - 9.5 GHZ, the amplitude of the input signal in the measuring system is kept constant. The measurement installation is intended for microwave absorption measurements for electrically insulating solid polymeric substances.