New developments on automated-active circuits for permittivity measurements at microwave frequencies

Author

Akyel, Cevdet ; Bosisio, Renato G.

Author_Institution

Ecole Polytech. de Montreal, Que., Canada

Volume

38

Issue

2

fYear

1989

fDate

4/1/1989 12:00:00 AM

Firstpage

496

Lastpage

504

Abstract

The complex permittivities of porous ceramics made up of zirconium and silicon oxides having pore diameters from 0.9 to 5 μm and filled with water are measured by computer-aided testing (CAT) while each sample is heated by microwave power. The complex dielectric permittivity is calculated by the well-known cavity perturbation formulas and the cavity measurements are obtained by the automated active cavity perturbation technique operated at high power levels (20 W). Automated weight measurements on the samples during testing makes it possible to accurately relate the permittivity values to the residual moisture in the heated samples

Keywords

automatic test equipment; automatic testing; microwave measurement; permittivity measurement; 0.9 to 5 micron; 20 W; automated-active circuits; cavity measurements; cavity perturbation; complex dielectric permittivity; computer-aided testing; heated samples; microwave frequencies; permittivity measurements; porous ceramics; residual moisture; weight measurements; Ceramics; Circuit testing; Dielectric measurements; Electromagnetic heating; Microwave measurements; Permittivity measurement; Power measurement; Silicon; Water heating; Zirconium;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.192334

Filename

192334