Analysis of noise temperature sensitivity for the design of a broadband thermal noise primary standard

Diaz Morcillo, Alejandro and Lozano Guerrero, Antonio and Fornet Ruiz, Jaime Jose and Monzón Cabrera, Juan (2012). Analysis of noise temperature sensitivity for the design of a broadband thermal noise primary standard. "Metrologia" (n. 49); pp. 538-551. ISSN 0026-1394. https://doi.org/10.1088/0026-1394/49/4/538.

Description

Title: Analysis of noise temperature sensitivity for the design of a broadband thermal noise primary standard
Author/s:
  • Diaz Morcillo, Alejandro
  • Lozano Guerrero, Antonio
  • Fornet Ruiz, Jaime Jose
  • Monzón Cabrera, Juan
Item Type: Article
Título de Revista/Publicación: Metrologia
Date: 2012
ISSN: 0026-1394
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Ingeniería Electrónica
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A broadband primary standard for thermal noise measurements is presented and its thermal and electromagnetic behaviour is analysed by means of a novel hybrid analytical?numerical simulation methodology. The standard consists of a broadband termination connected to a 3.5mm coaxial airline partially immersed in liquid nitrogen and is designed in order to obtain a low reflectivity and a low uncertainty in the noise temperature. A detailed sensitivity analysis is made in order to highlight the critical characteristics that mostly affect the uncertainty in the noise temperature, and also to determine the manufacturing and operation tolerances for a proper performance in the range 10MHz to 26.5 GHz. Aspects such as the thermal bead design, the level of liquid nitrogen or the uncertainties associated with the temperatures, the physical properties of the materials in the standard and the simulation techniques are discussed.

More information

Item ID: 16074
DC Identifier: http://oa.upm.es/16074/
OAI Identifier: oai:oa.upm.es:16074
DOI: 10.1088/0026-1394/49/4/538
Deposited by: Memoria Investigacion
Deposited on: 30 Jun 2013 13:07
Last Modified: 21 Apr 2016 16:25
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