Design, Construction, and Performance Evaluation of a Cryogenic 7-mm Coaxial Noise Standard

Author

Kang, Tae-Weon ; Kim, Jeong-Hwan ; Yurchuk, Eduard F. ; Park, Jeong-I ; Sargsyan, Melik V. ; Arsaev, Igor E. ; Ouzdin, Rinadii I.

Author_Institution

Electromagn. Metrol. Group, Korea Res. Inst. of Stand. & Sci., Daejeon

Volume

56

Issue

2

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

439

Lastpage

443

Abstract

A cryogenic 7-mm coaxial noise standard at 77.35 K has been designed and constructed. A ferrite composite-matched termination was used as a thermal noise source in the frequency range of 4.5-18 GHz. The noise temperature of the noise standard has been determined by measuring the temperature distribution and attenuation constant of a thermally isolated coaxial line and the attenuation of the output connector. The effective noise temperature has been evaluated to be 84.07-92.21 K with an uncertainty of 1.26-1.67 K (k = 2)

Keywords

coaxial cables; cryogenic electronics; measurement standards; microwave measurement; noise measurement; temperature distribution; 4.5 to 18 GHz; 77.35 K; 84.07 to 92.21 K; attenuation constant; cryogenic 7-mm coaxial noise standard; ferrite composite-matched termination; performance evaluation; temperature distribution; thermal noise source; thermally isolated coaxial line; Attenuation measurement; Coaxial components; Connectors; Cryogenics; Ferrites; Frequency; Measurement standards; Noise measurement; Temperature distribution; Temperature measurement; Cryogenic noise standard; noise temperature; thermal noise;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2007.891132

Filename

4126920