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Temperature control by microwave radiometry with narrow bandwidth*

Published online by Cambridge University Press:  15 January 2000

L. Dubois ,
C. Vanoverschelde ,
V. Thomy ,
J.-P. Sozanski  and
M. Chivé
L. Dubois*
Affiliation:
Département Hyperfréquences et Semi-Conducteurs, IEMN (UMR CNRS 8520), avenue Poincaré, B.P. 69, Cité Scientifique, 59652 Villeneuve d'Ascq Cedex, France
C. Vanoverschelde
Affiliation:
Département Hyperfréquences et Semi-Conducteurs, IEMN (UMR CNRS 8520), avenue Poincaré, B.P. 69, Cité Scientifique, 59652 Villeneuve d'Ascq Cedex, France
V. Thomy
Affiliation:
Département Hyperfréquences et Semi-Conducteurs, IEMN (UMR CNRS 8520), avenue Poincaré, B.P. 69, Cité Scientifique, 59652 Villeneuve d'Ascq Cedex, France
J.-P. Sozanski
Affiliation:
Département Hyperfréquences et Semi-Conducteurs, IEMN (UMR CNRS 8520), avenue Poincaré, B.P. 69, Cité Scientifique, 59652 Villeneuve d'Ascq Cedex, France
M. Chivé
Affiliation:
Département Hyperfréquences et Semi-Conducteurs, IEMN (UMR CNRS 8520), avenue Poincaré, B.P. 69, Cité Scientifique, 59652 Villeneuve d'Ascq Cedex, France
*
[email protected]
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Abstract

Temperature is an important parameter for industrial process control. With the usual methods we obtain only an invasive or superficial information about temperature. Microwave radiometry is a non-invasive way to determine the temperature within dissipative body. This paper presents the design of a new radiometer. With this system, the radiometric temperature is independent of the reflection coefficient of the sensor. A simplified calibration takes into account insertion losses of the microwave elements and the frequency bandwidth has been greatly reduced to eliminate the unwanted electromagnetic noise.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 9 , Issue 1 , January 2000 , pp. 63 - 68
Copyright
© EDP Sciences, 2000

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Footnotes

*

Thissubject was presented at C21′98 at Cachan the November 18-19, 1998.

References

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