Thermometry of lossy microstriplines by correlation radiometry

Author

Waro, P. ; Leroy, Y.

Author_Institution

Inst. d´´Electron. et de Microelectron. du Nord, UMR-CNRS, Villeneuve d´´Ascq, France

Volume

141

Issue

4

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

307

Lastpage

312

Abstract

The notion of correlation temperature resulting from the thermal noise of a passive symmetrical lossy two-port is applied to microwave microstriplines made lossy by implantation of small-size resistors. The case of an isothermal line is considered, followed by the case of a hot spot created on the line in which it is possible to emphasise its contribution in terms of correlation temperature. The study is illustrated by extensive experimental verifications in the bandwidth of 2-4 GHz. A method of inversion is presented based on Kalman filtering of the radiometric data, and leading to thermal profiling along the microstriplines

Keywords

Kalman filters; correlation methods; filtering and prediction theory; microstrip lines; microwave measurement; radiometers; radiometry; temperature measurement; thermal noise; 2 to 4 GHz; Kalman filtering; SHF; UHF; correlation radiometry; correlation temperature; hot spot; inversion; isothermal line; lossy microstriplines; microwave microstriplines; passive symmetrical lossy two-port; small-size resistors; thermal noise; thermal profiling;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19941240

Filename

313246