Cui, X.
and Crowley, T.
(2010),
Comparison of Experimental Techniques for Evaluating the Correction Factor of a Rectangular Waveguide Microcalorimeter, IEEE Transactions on Instrumentation and Measurement, [online], https://doi.org/10.1109/CPEM.2010.5544795, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905824
(Accessed October 14, 2025)
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Comparison of Experimental Techniques for Evaluating the Correction Factor of a Rectangular Waveguide Microcalorimeter
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Abstract
We have evaluated the correction factor of a new WR 15 (50 to 75 GHz) rectangular waveguide microcalorimeter with four different techniques. The four methods are in agreement. Our initial uncertainty analysis indicates that the technique with the lowest uncertainty is one that utilized two identical microcalorimeter core sections whose reference planes were connected to each other. Use of this technique has enabled us to reduce the uncertainty in effective efficiency by a factor of 2 relative to an earlier microcalorimeter.Citation
IEEE Transactions on Instrumentation and Measurement
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Journals
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Keywords
microcalorimeter, microwave power, millimeter-wave power, primary standards
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Created June 12, 2010, Updated October 12, 2021