Improvements on INRIM Coaxial Microcalorimeter and Outcome of a Model Comparison

Author

Brunetti, Luciano ; Oberto, Luca ; Sellone, Marco ; Shoaib, Nosherwan ; Vremera, Emil

Author_Institution

Electromagn. Div., Ist. Naz. di Ricerca Metrol., Turin, Italy

Volume

64

Issue

6

fYear

2015

fDate

42156

Firstpage

1472

Lastpage

1476

Abstract

This paper describes hardware and software improvements of the Istituto Nazionale di Ricerca Metrologica (INRIM) coaxial microcalorimeter together with their outcome on the primary power standard realization in the frequency band 0.05-40 GHz. A better temperature and power stabilization turned out to provide an improved signal/noise ratio and a drift reduction in every working condition of the microcalorimeter. The INRIM correction model is also compared with a traditional, but faster, one in terms of measurement uncertainty. The outcomes are presented in form of a 2.92-mm thermoelectric power sensor calibration together with the results that show an improved stability and repeatability of the measurement system.

Keywords

calibration; calorimeters; measurement systems; microsensors; microwave measurement; thermoelectric devices; INRIM coaxial microcalorimeter; INRIM correction model; Istituto Nazionale di Ricerca Metrologica; drift reduction; frequency 0.05 GHz to 40 GHz; measurement system; model comparison; primary power standard realization; signal-noise ratio; size 2.92 mm; thermoelectric power sensor calibration; Calibration; Measurement uncertainty; Microwave theory and techniques; Power measurement; Standards; Temperature measurement; Uncertainty; Broadband microcalorimeter; microwave measurements; microwave standards; power measurement; thermoelectric devices; thermoelectric devices.;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2015.2406052

Filename

7058401