Dielectric measurements using a rational function model

Author

Anderson, J.M. ; Sibbald, C.L. ; Stuchly, S.S.

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

42

Issue

2

fYear

1994

fDate

2/1/1994 12:00:00 AM

Firstpage

199

Lastpage

204

Abstract

A recently proposed rational function model for the aperture admittance of 50 ohm Teflon filled coaxial lines in contact with a homogeneous dielectric is experimentally validated. A calibration technique of the automatic network analyzer utilizing standard terminations and time domain gating is used. Uncertainties in the dielectric properties of reference liquids do not enter the calibration procedure. Experimental results for water and methanol are compared with estimated values. A model expression for the sensitivity of the probe is validated. The sensitivities of two coaxial line probes for the measurements made are determined. Results obtained using the new model are compared with those of other workers

Keywords

calibration; dielectric measurement; electric admittance; microwave measurement; network analysers; 50 ohm; Teflon filled coaxial lines; aperture admittance; automatic network analyzer; calibration technique; dielectric measurements; dielectric properties; homogeneous dielectric; probe sensitivity; rational function model; standard terminations; time domain gating; Admittance; Apertures; Calibration; Coaxial components; Dielectric measurements; Frequency measurement; Millimeter wave radar; Permittivity measurement; Probes; Reflection;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.275247

Filename

275247