A Comparative Analysis of Peaking Methods for Output Stages of Broadband Amplifiers

被引：11
作者：
Knochenhauer, Christian [1 ]
Sedighi, Behnam [2 ]
Ellinger, Frank [1 ]
机构：
[1] Tech Univ Dresden, Chair Circuit Design & Network Theory, D-01062 Dresden, Germany
[2] IHP Microelect, Circuit Design Dept, D-15236 Frankfurt, Germany
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2011年 / 58卷 / 11期
关键词：
BiCMOS; broadband amplifiers; inductive peaking; output matching; t-coil peaking; CMOS TECHNOLOGY; GHZ BANDWIDTH;
D O I：
10.1109/TCSI.2011.2157731
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：
This paper presents a general analysis of peaking methods in output stages of amplifiers for broadband communication systems. It is shown that common peaking methods, although providing significant signal bandwidth enhancement ratios (BWER), are limited to 30%-50% of their speed potential by output matching requirements. A modified T-coil peaking is analyzed which enhances both signal bandwidth and output matching frequency range by up to 200% compared to common peaking methods. A broadband amplifier using this inductive output matching with 69-GHz bandwidth implemented in a 0.25 mu m SiGe BiCMOS technology is presented to prove the validity of the analysis.
引用
收藏
页码：2581 / 2589
页数：9
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