WR 10 millimeter wave microcalorimeter

Weidman, M.P.; Hudson, P.A.

doi:10.6028/nbs.tn.1044

Cited by 4 publications

(5 citation statements)

References 3 publications

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“…The microwave power standards in use at the National Institute of Standards and Technology (NIST) consist of microcalorimeters and associated reference standards [1][2][3][4]. Each power standard is made up of both a microcalorimeter and a reference standard.…”

Section: Nist Microwave Power Standardsmentioning

confidence: 99%

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Microcalorimeter for 7 mm coaxial transmission line

Clague¹

1993

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Certain commercial components used in the microcalorimeter are identified in this document in order to adequately specify the design. Such use and identification does not imply recommendation or endorsement by NIST, nor does it imply that the identified items are necessarily the best available for the purpose. The International System of Units (SI) is used except in the dimensioned part drawings found in appendix B. The shop which made these parts was not equipped to use metric dimensions, Financial resources are not currently available to convert the drawings to SI units. IV

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Section: Nist Microwave Power Standardsmentioning

confidence: 99%

“…thermistor mount used as the reference standard [5]. References [1][2][3][4][5] include detailed descriptions of typical microcalorimeter and bolometer mount operation. However, for convenience a brief summary follows.…”

Section: Nist Microwave Power Standardsmentioning

confidence: 99%

Microcalorimeter for 7 mm coaxial transmission line

Clague¹

1993

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“…(3) use the supplied external insulating sleeve, (4) handle it with gloves, (5) wait several minutes after connecting it before making measurements, and (6) automate the mount voltage measurement so the drift can be corrected (make two rf-off readings, one before and one after the rf-on reading, and use linear interpolation to calculate an rf-off value as it would have been at the time of the rf-on reading).…”

Section: Shorted Pairmentioning

confidence: 99%

Coaxial reference standard for microwave power

Clague¹,

Voris²

1993

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TRADE NAME and SI UNITS DISCLAIMER Certain commercial components used in the reference standard are identified in this document in o(der to adequately specify the design. Such use and identification does not imply recommendation or endorsement by NIST nor does it imply that the identified items are necessarily the best available for the purpose. The International System of Units (SI) is used except in the dimensioned part drawings found in Appendix B. The shop which made these parts was not equipped to use metric dimensions. Economic resources are not currently available to convert the drawings to SI units.

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“…It allows the calibration of a RMS power sensor in terms of effective efficiency (η e ) versus the frequency and tracing it to the standard of direct current (dc), which is a fundamental SI quantity [4]. The microcalorimeter, or better the microcalorimetric technique, was initially considered for waveguide systems together with bolometric power sensors [5][6][7][8][9][10]. Progress in the development of a coaxial system and devices has made the coaxial microcalorimeter more attractive in the band from dc to 50 GHz, at least [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Microcalorimeter calibration factor and corrected effective efficiency versus the frequency for the correction model(7).…”

mentioning

confidence: 99%

Latest determination of a coaxial microcalorimeter calibration factor

Brunetti

Oberto

Sellone

et al. 2010

Meas. Sci. Technol.

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The paper describes the latest analysis made on a 3.5 mm coaxial microcalorimeter, which is the system used by Istituto Nazionale di Ricerca Metrologica to set up the electromagnetic power standard in the frequency band between 1 MHz and 26.5 GHz. The analysis concerns mainly the electro-thermal behavior of the system feeding lines whose performances define the main error component of the microcalorimeter. Previous mathematical models of the system have been updated and the effects on measurement accuracy are shown by comparing new and old measurement datasets at frequency values between 50 MHz and 26 GHz. It results in the fact that the influence of the sensor mismatch on the microcalorimeter calibration factor can be as high as 0.1% and reflects on the effective efficiency value.

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WR 10 millimeter wave microcalorimeter

Cited by 4 publications

References 3 publications

Microcalorimeter for 7 mm coaxial transmission line

Microcalorimeter for 7 mm coaxial transmission line

Coaxial reference standard for microwave power

Latest determination of a coaxial microcalorimeter calibration factor

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