Gu, D.
, Walker, D.
and Randa, J.
(2009),
Variable Termination Unit for Noise-Parameter Measurements, IEEE Transactions on Instrumentation and Measurement, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=33050
(Accessed April 23, 2024)
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Variable Termination Unit for Noise-Parameter Measurements
Published
Author(s)
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Abstract
NIST has upgraded its measurement capability of noise parameters on low-noise amplifiers with a variable termination unit (VTU) in the 1 to 12.4 GHz frequency range. Such a unit allows improved time efficiency and accuracy in the noise-temperature measurements used to de-embed noise parameters of amplifiers. We present the design and the characterization of the VTU. Measured results of one particular amplifier at integer frequencies from 8 GHz to 12 GHz show satisfactory accuracy. The VTU method is also validated through comparison with results from the manual method.Citation
IEEE Transactions on Instrumentation and Measurement
Volume
58
Pub Type
Journals
Download Paper
Keywords
Amplifier noise parameters, source pull technique, noise measurement, uncertainty analysis.
Citation
Created April 1, 2009, Updated February 19, 2017