Randa, J.
(2000),
Multiport Noise Characterization and Differential Amplifiers, Tech Dig., Auto. RF Tech. Group Conf., Boston, MA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=24909 (Accessed May 8, 2026)
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Multiport Noise Characterization and Differential Amplifiers
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Author(s)
Abstract
I address the issue of the definition and measurement of noise figure and parameters to characterize multiport devices, particularly differential amplifiers. A parameterization in terms of the noise matrix appears to be the most practical. The noise figure for a given output port is defined and related to the noise matrix and scattering parameters of the device. As an example, the case of a differential amplifier with reflectionless terminations is considered in detail. The noise figure, effective input temperature, and gains are related to the results of a series of hot-cold measurements, as in the familiar two-port case.Proceedings Title
Tech Dig., Auto. RF Tech. Group Conf.
Conference Dates
June 15-16, 2000
Conference Location
Boston, MA
Pub Type
Conferences
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Keywords
amplifier noise, differential amplifier, multiport amplifier, noise, noise figure, noise matrix, thermal noise
Citation
Issues
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Created June 1, 2000, Updated February 19, 2017