A comparative analysis of peaking methods for output stages of broadband amplifiers

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Christian Knochenhauer - , TUD Dresden University of Technology (Author)
  • Behnam Sedighi - , Leibniz Institute for High Performance Microelectronics (Author)
  • Frank Ellinger - , Chair of Circuit Design and Network Theory (Author)

Abstract

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 0.25μm SiGe BiCMOS technology is presented to prove the validity of the analysis.

Details

Original languageEnglish
Article number5941016
Pages (from-to)2581-2589
Number of pages9
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Volume58
Issue number11
Publication statusPublished - 2011
Peer-reviewedYes

Keywords

ASJC Scopus subject areas

Keywords

  • BiCMOS, broadband amplifiers, inductive peaking, output matching, t-coil peaking