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Updated: Jul 13, 2026

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
Published on: September 19, 2020
Measurement of the complex permittivity of low loss polymer powders in the millimeter-wave range
Boris Kapilevich1, Boris Litvak, Vladimir Wainstein
1The College of J&S, Dept. of Electrical and Electronics Eng., The Israeli Center for Radiation Sources and Applications, P.O. Box 3, Ariel, 44837, Israel. boriskap@yosh.ac.il
Abstract:
An improved measurement method of complex permittivity of low loss polymer powders is suggested. The measurements are done in the mm-wave range using a quasi optical resonator. The 2-D corrugated mode exciter is employed to improve suppression of undesirable higher modes. The model used for reconstructing complex permittivity takes into account ohm losses of metal mesh coupling that provide better accuracy of the reconstructing procedure. An example illustrating this method is reported.
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Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the medium, μ.
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