Primary power standards in the microwave domain are realized using a calorimetric technique, usually identified with the used measurement system, i.e., the microcalorimeter. It is adjusted for measurement of power ratios with a relative accuracy that, after an appropriate system calibration, is of order of 10−3, at least in the microwave domain (1 GHz–18 GHz). Hereby we describe the calibration process implemented at the Istituto Nazionale di Ricerca Metrologica (Italy) for realizing a coaxial power standard based on indirect heating thermocouples. Particular regard is devoted to describe the nearly ideal thermal load used for determining the microcalorimeter losses and their influence on the measurand accuracy.
On Coaxial Microcalorimeter Calibration / Brunetti, Luciano; Oberto, Luca. - In: THE EUROPEAN PHYSICAL JOURNAL. APPLIED PHYSICS. - ISSN 1286-0042. - 43:(2008), pp. 239-244. [10.1051/epjap:2008116]
On Coaxial Microcalorimeter Calibration
BRUNETTI, LUCIANO;OBERTO, LUCA
2008
Abstract
Primary power standards in the microwave domain are realized using a calorimetric technique, usually identified with the used measurement system, i.e., the microcalorimeter. It is adjusted for measurement of power ratios with a relative accuracy that, after an appropriate system calibration, is of order of 10−3, at least in the microwave domain (1 GHz–18 GHz). Hereby we describe the calibration process implemented at the Istituto Nazionale di Ricerca Metrologica (Italy) for realizing a coaxial power standard based on indirect heating thermocouples. Particular regard is devoted to describe the nearly ideal thermal load used for determining the microcalorimeter losses and their influence on the measurand accuracy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
