The Effect of Cylindricity and Coaxiality Deviations of Samples on Measurement Error of the Permittivity Using a Biconical Resonator

The paper is devoted to the measurement of permittivity by biconical resonator. The effect of the cylindrical and coaxial deviations of test samples on the parameters of the biconical resonator and the accuracy of measuring permittivity are studied. The resonance frequency shift due to variations of factors of deviation of cylindricity and coaxiality are obtained. Estimations of effects are carried out numerically. To ensure acceptable accuracy of permittivity measurement, requirements for the quality of sample fabrication are formulated.