ANALYTICAL BEHAVIOR OF THE NOISE RESISTANCE AND THE NOISE CONDUCTANCEFOR A NETWORK WITH PARALLEL AND SERIES FEEDBACK

Authors
BOGLIONE L POLLARD RD POSTOYALKO V
Citation
L. Boglione et al., ANALYTICAL BEHAVIOR OF THE NOISE RESISTANCE AND THE NOISE CONDUCTANCEFOR A NETWORK WITH PARALLEL AND SERIES FEEDBACK, IEEE transactions on microwave theory and techniques, 45(2), 1997, pp. 301-304
Citations number
13
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE transactions on microwave theory and techniques → ACNP
ISSN journal
00189480
Volume
45
Issue
2
Year of publication
1997
Pages
301 - 304
Database
ISI
SICI code
0018-9480(1997)45:2<301:ABOTNR>2.0.ZU;2-G
Abstract
An analysis is presented of the changes of the noise parameters of a t wo-port network when noisy series and parallel feedback immittances ar e applied. Exact formulas for the noise parameters R(n), g(n), and p(n ) are given as functions of the feedback for a given network. It is pr oved that R(n) always reaches a minimum when a reactive series feedbac k is considered. The same results are demonstrated for g(n) since a du ality principle is pointed out. The results are valid for a wide range of linear microwave two-ports networks, either passive or active, and they are used to confirm the data from previously published work.