Analysis and sensitivities of noisy networks using nodal approach

Author

Paixao, O.P. ; Jastrzebski, Adam K.

Author_Institution

Electron. Eng. Labs., Kent Univ., Canterbury, UK

Volume

42

Issue

7

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

1254

Lastpage

1260

Abstract

An enhancement of nodal noise analysis of electrical networks is presented by computing noise sensitivities with respect to network parameters. The noise figure and spot noise parameters sensitivities of the reduced two-port network are obtained from the partial inversion of the nodal admittance matrix. Analytical formulas are derived to calculate first- and second-order noise sensitivities directly, rather than using a computer-time intensive perturbation method. Expressions for noise sensitivities of cascaded networks are also given. Numerical results for an actively matched amplifier are shown to illustrate the advantages of the proposed technique

Keywords

MMIC; cascade networks; circuit CAD; electric admittance; microwave amplifiers; sensitivity; actively matched amplifier; cascaded networks; electrical networks; first-order noise sensitivities; network parameters; nodal admittance matrix; nodal approach; nodal noise analysis; noise figure; noise sensitivities; noisy networks; partial inversion; reduced two-port network; second-order noise sensitivities; spot noise parameters sensitivities; Admittance; Circuit noise; Computer networks; Integrated circuit interconnections; Integrated circuit noise; Matrices; Network topology; Noise figure; Noise reduction; Perturbation methods;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.299764

Filename

299764