High-Precision Method of Moments Applied to Measurement of Dielectric Parameters at Microwave Frequencies

被引：2

作者：

Petrovic, Jovana G. ^{[1
]}

Olcan, Dragan, I ^{[1
]}

Obradovic, Nina N. ^{[2
]}

Djordjevic, Antonije R. ^{[1
,3
]}

机构：

[1] Univ Belgrade, Sch Elect Engn, Belgrade 11120, Serbia

[2] SASA, Inst Tech Sci, Belgrade 11000, Serbia

[3] Serbian Acad Sci & Arts SASA, Belgrade 11000, Serbia

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2022年 / 70卷 / 02期

关键词：

Method of moments; Permittivity measurement; Dielectrics; Permittivity; Mathematical models; Magnetic domains; Testing; Body of revolution (BoR); dielectric measurements; high-precision integration; method of moments; numerical electromagnetics (EMs); singular integrals; COMPLEX PERMITTIVITY; SCATTERING; INTEGRALS; ACCURACY; SPACE; BODY; LINE;

D O I：

10.1109/TMTT.2021.3136294

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel high-precision model of a custom-made coaxial chamber used for broadband measurement of the relative complex permittivity at microwave frequencies is presented. The model is based on a surface integral-equation formulation of the method of moments tailored for bodies of revolution. All singular integrals encountered in the numerical analysis are calculated in a unified way with a novel integral transformation, which enables the precision of up to 12 significant digits using the 64-bit representation of real numbers. The dielectric parameters are estimated from the reflection-coefficient measurement of the chamber with a disk-shaped dielectric sample by comparison of the measured data with the high-precision numerical analysis of the chamber. The complete measurement procedure is illustrated and verified using samples of known dielectric properties.

引用

页码：970 / 979

页数：10

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