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PUBLICATIONS

Variable Termination Unit for Noise-Parameter Measurements

Published

Author(s)

Dazhen Gu, Dave K. Walker, James P. Randa

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

Local Download

Keywords

Amplifier noise parameters, source pull technique, noise measurement, uncertainty analysis.
Electromagnetics

Citation

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 October 4, 2025)

Issues

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Created April 1, 2009, Updated February 19, 2017
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