New effective coaxial twin-load microcalorimeter system | IEEE Conference Publication | IEEE Xplore

New effective coaxial twin-load microcalorimeter system

Publisher: IEEE

Abstract:

This paper describes a new coaxial twin-load microcalorimeter, which was designed and fabricated to be installed at the national metrology institute of Egypt (NIS). Each ...View more

Abstract:

This paper describes a new coaxial twin-load microcalorimeter, which was designed and fabricated to be installed at the national metrology institute of Egypt (NIS). Each component of the microcalorimeter measurement setup was measured and characterized separately to ensure its performance. The effective efficiency of a type-N thermistor mount at different frequency points was measured using the designed microcalorimeter setup. A comparison between these measured values and the corresponding effective efficiency measured by the microcalorimeter setup of the national metrology institute of Turkey (TÜBİTAK UME) was done to validate the accuracy of the new setup.
Date of Conference: 10-15 July 2016
Date Added to IEEE Xplore: 11 August 2016
ISBN Information:
Electronic ISSN: 2160-0171
Publisher: IEEE
Conference Location: Ottawa, ON, Canada

I. Introduction

Microcalorimeters were proposed in the late 1950s to realize the electromagnetic power standard at high frequency [1]. This primary level measurement system is used to measure a temperature change due to the power loss of a thermistor mount as a dc voltage, and to measure the radio frequency (RF) power of the applied electromagnetic field using a thermistor mount and Wheatstone bridge. The effective efficiency of the thermistor mount is calculated from these two measurements [2].

References

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