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Temperature dependence of the complex permittivity in microwave range of some industrial polymers

H.-E. Porteanu1, R. Kaempf2, T. Flisgen1, and W. Heinrich1

Published in:

AIP Adv., vol. 12, no. 10, pp. 105007 (2022).


The microwave properties of a number of polymers common in industry are investigated. A cylindrical resonator in the TM012 mode is used. The cavity perturbation method and detailed COMSOL simulations are applied for extracting the complex permittivity as a function of temperature. The results are useful for the design of plastic processing tools by heating with electromagnetic fields. The intrinsic parameters of absorption are derived based on two exponential decays: polarization and Arrhenius dependence of the decay times on temperature.

1 Ferdinand-Braun-Institut gGmbH, Leibniz-Institut für Höchstfrequenztechnik (FBH), Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany
2 mobitec Kottmann u. Berger GmbH, Lorcher Straße 36, 73102 Birenbach, Germany


Polymers, Perturbation theory, Network analyzer, Microwave absorptions, Electrical properties and parameters, Dielectric properties

Copyright © 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). https://doi.org/10.1063/5.0101470

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