Below 10 MHz, the calibration of electric power sensors realized by means of microcalorimeters fails, mainly because of a reduced sensitivity of the measurement system. This introduces a metrological gap in the power standard between the low frequency and the radio frequency range. However, as TEM transmission line admits pseudo potential functions, power sensor calibration can be done on coaxial line also in terms of RF voltage from DC up to 100 MHz at least. The paper describes how INRIM implements this calibration technique together with the obtainable accuracy.
RF-power standard From AC-DC thermal converter / Brunetti, Luciano; Oberto, Luca; Sellone, Marco. - 1:(2011), pp. 86-90. (Intervento presentato al convegno 18th Symposium IMEKO TC-4 tenutosi a Natal, Brazil nel 27-30/9/2011).
RF-power standard From AC-DC thermal converter
BRUNETTI, LUCIANO;OBERTO, LUCA;SELLONE, MARCO
2011
Abstract
Below 10 MHz, the calibration of electric power sensors realized by means of microcalorimeters fails, mainly because of a reduced sensitivity of the measurement system. This introduces a metrological gap in the power standard between the low frequency and the radio frequency range. However, as TEM transmission line admits pseudo potential functions, power sensor calibration can be done on coaxial line also in terms of RF voltage from DC up to 100 MHz at least. The paper describes how INRIM implements this calibration technique together with the obtainable accuracy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
