RF POWER STANDARD FROM AC-DC THERMAL CONVERTER

L. Brunetti, L. Oberto, M. Sellone

Abstract

Below the frequency of 10 MHz, the calibration fails of electric power sensors made by means of microcalorimeters, mainly because of a reduced sensitivity of the measurement system. This produces a metrological gap in the power standard between the low frequency and radio frequency range. However, as TEM transmission line admits pseudo potential functions, power sensor calibration can be done on coaxial line also in term of RF voltage from DC up to 100 MHz at least. The paper describes how INRIM implements this calibration technique together with the obtained accuracy.

Keywords

Power, RF-Voltage, Standard, Calibration

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IMEKO-TC4-2011-006.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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