A Null-Balanced Total-Power Radiometer System NCS1

A recently developed radiometer system NCS1 is used to calibrate thermal noise temperature at any frequency between 1.0 GHz and 12.0 GHz. Any cryogenic noise source can be measured; the upper limit of noise temperatures measured without a loss of accuracy is estimated to be about 10(5) K. For a typi...

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Detalles Bibliográficos
Autor principal: Pucic, Sunchana P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1994
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8345259/
https://www.ncbi.nlm.nih.gov/pubmed/37404356
http://dx.doi.org/10.6028/jres.099.005
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author Pucic, Sunchana P.
author_facet Pucic, Sunchana P.
author_sort Pucic, Sunchana P.
collection PubMed
description A recently developed radiometer system NCS1 is used to calibrate thermal noise temperature at any frequency between 1.0 GHz and 12.0 GHz. Any cryogenic noise source can be measured; the upper limit of noise temperatures measured without a loss of accuracy is estimated to be about 10(5) K. For a typical hot noise source with the noise temperature of 8400 K and a reflection coefficient magnitude of 0.1, the expanded uncertainty is ≈ 1.8%, and the system sensitivity ≈ 2 K. Implemented in Type N connector, it can be easily modified to calibrate noise sources with other coaxial connectors or waveguide flanges.
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spelling pubmed-83452592023-07-03 A Null-Balanced Total-Power Radiometer System NCS1 Pucic, Sunchana P. J Res Natl Inst Stand Technol Article A recently developed radiometer system NCS1 is used to calibrate thermal noise temperature at any frequency between 1.0 GHz and 12.0 GHz. Any cryogenic noise source can be measured; the upper limit of noise temperatures measured without a loss of accuracy is estimated to be about 10(5) K. For a typical hot noise source with the noise temperature of 8400 K and a reflection coefficient magnitude of 0.1, the expanded uncertainty is ≈ 1.8%, and the system sensitivity ≈ 2 K. Implemented in Type N connector, it can be easily modified to calibrate noise sources with other coaxial connectors or waveguide flanges. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1994 /pmc/articles/PMC8345259/ /pubmed/37404356 http://dx.doi.org/10.6028/jres.099.005 Text en https://creativecommons.org/publicdomain/zero/1.0/The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Pucic, Sunchana P.
A Null-Balanced Total-Power Radiometer System NCS1
title A Null-Balanced Total-Power Radiometer System NCS1
title_full A Null-Balanced Total-Power Radiometer System NCS1
title_fullStr A Null-Balanced Total-Power Radiometer System NCS1
title_full_unstemmed A Null-Balanced Total-Power Radiometer System NCS1
title_short A Null-Balanced Total-Power Radiometer System NCS1
title_sort null-balanced total-power radiometer system ncs1
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8345259/
https://www.ncbi.nlm.nih.gov/pubmed/37404356
http://dx.doi.org/10.6028/jres.099.005
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