Shielded open-circuited sample holder for dielectric measurements of solids and liquids

Author

Baker-Jarvis, James ; Janezic, Michael D. ; Jones, Chriss A.

Author_Institution

Div. of Radio Frequency Technol., Nat. Inst. of Stand. & Technol., Boulder, CO, USA

Volume

47

Issue

2

fYear

1998

fDate

4/1/1998 12:00:00 AM

Firstpage

338

Lastpage

344

Abstract

This paper presents a technique for permittivity measurements that can be used for either liquids or solid coaxial samples from near dc to gigahertz frequencies. The method uses both a full-mode model of a coaxial open-circuited termination and a capacitive method for permittivity determination. The method requires the use of an impedance bridge and a network analyzer. Measurements indicate good accuracy for the permittivity over a very wide band of frequencies. For high permittivity materials the sample surfaces must be metallized. An uncertainty analysis is also presented

Keywords

coaxial cables; impedance matching; measurement uncertainty; microwave measurement; permittivity measurement; sample holders; capacitive method; coaxial open-circuited termination; dielectric measurements; full-mode model; impedance bridge; liquid samples; loss factor; microwave measurement; network analyzer; permittivity measurement; shielded open-circuited sample holder; solid coaxial samples; tangential field components; uncertainty analysis; Bridges; Coaxial components; Dielectric measurements; Frequency measurement; Inorganic materials; Liquids; Permittivity measurement; Solids; Surface impedance; Wideband;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.744172

Filename

744172