ACCURACY OF MEASUREMENTS OF ε AND μ FOR LOSSY MATERIALS

摘要

Measurements of samples of lossy ceramics and ferrites for Higher Order Mode (HOM) loads are performed routinely in our Lab. Some difference of results for different batches of materials can be explained not only by technological deviations in the material production but also by errors in the dimensions of the measured samples. Analytical evaluations and simulations with MicroWave Studio for samples in the form of coaxial washers in the frequency range from 1 to 12.4 GHz helped to define the main sources of errors and to improve accuracy of measurements.