De-embedding the noise figure of differential amplifiers

被引：46

作者：

Abidi, AA ^{[1
]}

Leete, JC ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Integrated Circuits & Syst Lab, Los Angeles, CA 90095 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 1999年 / 34卷 / 06期

关键词：

D O I：

10.1109/4.766823

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：

Many radio-frequency circuits use differential topologies, whereas the instruments to evaluate them are inevitably single ended. Taking into account noise correlations, this work extends Friis' well-known equation for the noise figure of a cascade of two-ports to the case of three-ports, such as baluns, which surround a differential amplifier during measurements. The amplifier gain and noise figure mag be accurately de-embedded with single-ended measurements on the cascade and on the baluns. The new formulas are experimentally validated.

引用

页码：882 / 885

页数：4