Field analysis of new coaxial dielectrometer

Author

Xi, Weiguo ; Tinga, Wayne R.

Author_Institution

Dept. of Eng., Alberta Univ., Edmonton, Alta., Canada

Volume

40

Issue

10

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

1927

Lastpage

1934

Abstract

A field analysis of a composite sample insertion hole in a coaxial re-entrant cavity is performed via a mode-matching formulation. The formulation and the numerical method are presented, and the numerical results are discussed with attention focused on the hole effects on the dielectric loaded cavity. Based on the analysis, and the structure that allows for the sample insertion holes, a dielectrometer featuring both ease of sample insertion and accuracy in dielectric determinations is obtained. It is demonstrated that solid, liquid, or powdered samples can be readily accommodated and measured, and the dielectric data obtained via two theoretically calculated calibration curves are in good agreement with published data

Keywords

Q-factor; cavity resonators; dielectric measurement; electromagnetic field theory; measurement errors; microwave measurement; coaxial dielectrometer; coaxial re-entrant cavity; composite sample insertion hole; dielectric constant; dielectric loaded cavity; field analysis; liquid samples; loss tangent; mode-matching formulation; numerical method; permittivity; powdered samples; solid sample; Calibration; Coaxial components; Conductors; Dielectric materials; Dielectric measurements; Frequency measurement; Geometry; Permittivity measurement; Q factor; Resonant frequency;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.159630

Filename

159630