Accuracy of microwave cavity perturbation measurements

Author

Carter, Richard G.

Author_Institution

Dept. of Eng., Lancaster Univ., UK

Volume

49

Issue

5

fYear

2001

fDate

5/1/2001 12:00:00 AM

Firstpage

918

Lastpage

923

Abstract

Techniques based on the perturbation of cavity resonators are commonly used to measure the permittivity and permeability of samples of dielectric and ferrite materials at microwave frequencies. They are also used to measure the local electric- and magnetic-field strengths in microwave structures including the shunt impedances of cavity resonators and the coupling impedances of slow-wave structures. This paper reexamines the assumptions made in the theory of these techniques and provides estimates of the errors of measurement arising from them

Keywords

cavity resonators; field strength measurement; magnetic permeability measurement; measurement errors; microwave measurement; permittivity measurement; slow wave structures; cavity resonators; coupling impedances; electric-field strengths; magnetic-field strengths; measurement errors; microwave cavity; permeability; permittivity; perturbation measurements; shunt impedances; slow-wave structures; Cavity resonators; Dielectric materials; Dielectric measurements; Ferrites; Frequency measurement; Impedance; Magnetic materials; Microwave measurements; Permeability measurement; Permittivity measurement;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.920149

Filename

920149