On Coaxial Microcalorimeter Calibration

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.

8 pages, 7 figures

References in corpus (1)

• Thermoelectric Sensors as Microcalorimeter Load

Cited by in corpus (7)

• Comparison Among Coaxial Microcalorimeter Models
• Comparison between Thermoelectric and Bolometric Microwave Power Standards
• RF/MW power standard realization without unitary efficiency assumption at dc/LF
• Improvements on INRIM Coaxial Microcalorimeter and Outcome of a Model Comparison
• The True-Twin microcalorimeter: a proof-of-concept experiment
• Identification of RF&MW microcalorimeter weak points by means of uncertainty analysis
• Improvement of primary power standard through international comparison feedback