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

Author

Valk, E.C. ; Routledge, D. ; Vaneldik, J. Fred ; Landecker, T.L.

Author_Institution

Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada

Volume

37

Issue

2

fYear

1988

fDate

6/1/1988 12:00:00 AM

Firstpage

195

Lastpage

200

Abstract

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

Keywords

S-parameters; cascade networks; multiport networks; network analysis; passive networks; random noise; cascaded passive two-ports; de-embedding; microwaves; noise wave model; transfer scattering small signal parameters; two-port noise parameters; Circuit analysis; Circuit noise; Equations; Fixtures; Microwave frequencies; Microwave measurements; Microwave transistors; Noise generators; Scattering parameters; Temperature;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.6051

Filename

6051