Abstract
A technique for the local determination of the permittivities of substances, which uses resonance features of polarization-degenerated HE electromagnetic oscillations in a structure formed by an orthogonal junction of crossed evanescent cylindrical and radial waveguides, is considered. A sample of an isotropic or anisotropic dielectric (a plate of arbitrary shape and size) is placed into the intersection region and partially into the radial waveguide. Permittivities of Ftoroplast-4 fluoroplastic, fused quartz, single-crystal quartz, and other dielectrics measured in a frequency band of 10–70 GHz are presented.
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Makeev, Y.G., Motornenko, A.P. Measuring the Electric Parameters of Dielectrics at Microwave Frequencies. Instruments and Experimental Techniques 46, 60–64 (2003). https://doi.org/10.1023/A:1022539424685
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DOI: https://doi.org/10.1023/A:1022539424685