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A low loss measurement technique for complex permittivity, using a closed cylindrical cavity resonator, is investigated. The measurements are made at the resonant frequency of the TE01.delta mode with a new modified field model, which provides a very simple and clear description of the field distribution within the resonator. The various aspects of the conductor loss are studied. The perturbation methods and their accuracies for calculating the conductor loss and the energy factor are compared with the traditional calculation methods. The improvement of the modified field model to the unmodified is justified by experimental results on dielectric constant measurements.
Date of Conference: 23-27 March 2009