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De-embedding two-port noise parameters using a noise wave model

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4 Author(s)
Valk, E.C. ; Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada ; Routledge, D. ; Vaneldik, J.F. ; Landecker, T.L.

Equations are presented, suitable for computer or calculator, for accurately de-embedding the noise parameters of both the first and the second two-port in a cascade of noisy two-parts from known values of the noise parameters of the cascade. The derivations are presented in terms of a noise wave model for two-ports, using transfer scattering small signal parameters. A numerical example is presented in which the noise parameters of two cascaded passive two-ports having unequal physical temperatures are individually de-embedded from the noise parameters of the cascade. As a check on the analysis presented, the noise parameters of each two-port are also calculated directly from its scattering parameters and physical temperature

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:37 ,  Issue: 2 )

Date of Publication:

Jun 1988

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