Improvements on INRIM Coaxial Microcalorimeter and Outcome of a Model Comparison

Abstract

This paper describes hardware and software improvements of the 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 to a traditional, but faster, one in terms of measurement uncertainty. Outcomes are presented in form of a 2.92 mm thermoelectric power sensor calibration together with results that show the improved stability and repeatability of the measurement system.

5 pages, 4 figures, 2 tables

References in corpus (5)

• Thermoelectric Sensors as Microcalorimeter Load
• Comparison between Thermoelectric and Bolometric Microwave Power Standards
• Comparison Among Coaxial Microcalorimeter Models
• Alternative Procedures in Realizing of the High Frequency Power Standards with Microcalorimeter and Thermoelectric Power Sensors
• On Coaxial Microcalorimeter Calibration

Cited by in corpus (2)

• RF/MW power standard realization without unitary efficiency assumption at dc/LF
• Identification of RF&MW microcalorimeter weak points by means of uncertainty analysis