DocumentCode
1000277
Title
Variable Termination Unit for Noise-Parameter Measurement
Author
Gu, Dazhen ; Walker, David K. ; Randa, James
Author_Institution
Electromagn. Div., Nat. Inst. of Stand. & Technol., Boulder, CO
Volume
58
Issue
4
fYear
2009
fDate
4/1/2009 12:00:00 AM
Firstpage
1072
Lastpage
1077
Abstract
The National Institute of Standards and Technology (NIST) has upgraded its capability to measure noise parameters on low-noise amplifiers with a variable termination unit (VTU) in the frequency range of 1-12.4 GHz. Such a unit allows improved time efficiency and accuracy in the noise-temperature measurements used to de-embed the noise parameters of amplifiers. We present the design and characterization of the VTU. The measured results of one particular amplifier at integer frequencies ranging from 8 to 12 GHz show satisfactory accuracy. The VTU method is also validated by comparison with the results from the manual method.
Keywords
UHF amplifiers; low noise amplifiers; microwave amplifiers; noise measurement; frequency 1 GHz to 12.4 GHz; low-noise amplifiers; noise-parameter measurement; noise-temperature measurements; variable termination unit; Amplifier noise parameters; noise measurement; source pull technique; uncertainty analysis;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/TIM.2008.2007055
Filename
4682723
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