An Accurate Radially Stratified Approach for Determining the Complex Permittivity of Liquids in a Cylindrical Microwave Cavity

Author

Barmatz, M.B. ; Jackson, H.W. ; Javeed, A.S. ; Jamieson, C.S. ; Steinfeld, D.E.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

63

Issue

2

fYear

2015

fDate

Feb. 2015

Firstpage

504

Lastpage

508

Abstract

A complex permittivity measurement method is introduced that is applicable to radially stratified resonant microwave cavities excited by a TM_0m0 eigenmode. This single-frequency approach is well suited to the measurement of the complex permittivity of liquids because it can accurately account for a supporting tube container. It can also be applied advantageously to solid rods or tubes. The frequency dependence, as well as the field configuration at the cavity walls are taken into account more accurately than in other approaches. Comparing our results with published measurements of well-known liquids validates this technique.

Keywords

cavity resonators; microwave measurement; permittivity measurement; TM_0m0 eigenmode; cavity walls; complex liquid permittivity measurement method; cylindrical microwave cavity; radially stratified resonant microwave cavity; single-frequency approach; solid rods; tube container; Cavity resonators; Electron tubes; Liquids; Loss measurement; Permittivity; Permittivity measurement; Q-factor; Cavity perturbation; microwave; permittivity measurement; radially stratified approach; resonant cylindrical cavity; wall losses;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2014.2387057

Filename

7008517