Analytical behavior of the noise resistance and the noise conductance for a network with parallel and series feedback

被引：6

作者：

Boglione, L

Pollard, RD

Postoyalko, V

机构：

[1] Microwave Terahertz and Technology Group, Department of Electronic and Electrical Engineering, University of Leeds

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1997年 / 45卷 / 02期

关键词：

amplifier noise; feedback amplifiers amplifiers; feedback circuits; microwave amplifiers; noise;

D O I：

10.1109/22.557617

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An analysis is presented of the changes of the noise parameters of a two-port network when noisy series and parallel feedback immittances are 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 proved that R(n) always reaches a minimum when a reactive series feedback is considered. The same results are demonstrated for g(n) since a duality 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.

引用

页码：301 / 304

页数：4

共 13 条

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