A comparative study of four open-ended coaxial probe models for permittivity measurements of lossy dielectric/biological materials at microwave frequencies

Author

Bérubé, D. ; Ghannouchi, F.M. ; Savard, P.

Author_Institution

Inst. de Genie Biomed., Ecole Polytech. de Montreal, Que., Canada

Volume

44

Issue

10

fYear

1996

fDate

10/1/1996 12:00:00 AM

Firstpage

1928

Lastpage

1934

Abstract

A comparative study of four open-ended coaxial probe models which relate the coaxial line end impedance to the complex permittivity of the material under test is presented. The accuracy of the models in measuring lossy dielectric/biological material and their robustness as a function of the calibration materials are investigated. The four open-ended coaxial probe models studied are: capacitive model, antenna model, virtual line model, and rational function model. Experimental results taken on saline solutions as lossy materials are obtained for the four models

Keywords

bioelectric phenomena; biomedical measurement; dielectric materials; microwave measurement; permittivity measurement; probes; antenna model; biological materials; calibration materials; capacitive model; complex permittivity; lossy dielectric materials; open-ended coaxial probe models; permittivity measurements; rational function model; saline solutions; virtual line model; Biological materials; Biological system modeling; Coaxial components; Dielectric loss measurement; Dielectric losses; Dielectric materials; Impedance; Materials testing; Permittivity; Probes;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.539951

Filename

539951