J. Cuper, B. Salski, T. Karpisz, A. Pacewicz, P. Kopyt
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Conductivity measurement in mm-wave band with a Fabry-Perot open resonator
This paper presents nondestructive conductivity measurement in the 20–40 GHz range with a Fabry-Perot open resonator, which is already known for its applicability in the characterization of low-loss dielectric laminates. In the presented setup, no electromagnetic model is needed to determine unknown conductivity of the material. The only figures of merit are Q-factors of the empty resonator and the one loaded with the sample. It is shown that the plano-concave open resonator can be used in the measurement of conductivity ranging from 104 up to a few 107 S/m.
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