High-accuracy quasistatic numerical model for bodies of revolution tailored for RF measurements of dielectric parameters

Author:

Djordjevic Antonije1,Olcan Dragan2ORCID,Petrovic Jovana2ORCID,Obradovic Nina3ORCID,Filipovic Suzana3ORCID

Affiliation:

1. University of Belgrade, School of Electrical Engineering, Belgrade, Serbia + Serbian Academy of Sciences and Arts, Belgrade, Serbia

2. University of Belgrade, School of Electrical Engineering, Belgrade, Serbia

3. Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade, Serbia

Abstract

We have developed rotationally symmetrical coaxial chambers for measurements of dielectric parameters of disk-shaped samples, in the frequency range from 1 MHz to several hundred MHz. The reflection coefficient of the chamber is measured and the dielectric parameters are hence extracted utilizing a high-accuracy quasistatic numerical model of the chamber and the sample. We present this model, which is based on the method of-moments solution of a set of integral equations for composite metallic and dielectric bodies. The equations are tailored to bodies of revolution. The model is efficient and accurate so that the major contribution of the measurement uncertainty comes from the measurement hardware.

Publisher

National Library of Serbia

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