Effect of output buffer design on 40Gb/s limiting amplifiers designed with InP HBT technology

  • G. Georgiou
  • , V. Houtsma
  • , R. Pullela
  • , Q. Lee
  • , A. Leven
  • , J. S. Weiner
  • , R. Kopf
  • , A. Tate
  • , Y. Yang
  • , Y. Baeyens
  • , Y. K. Chen

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

An InP-based HBT technology with peak ft∼135GHz is used to design and fabricate several 3-stage limiting amplifier with high margin at >40Gbps. Feedback techniques are used in all design for the first two stages. The different designs compare the conventional (resistive load) differential pair output buffer with a feedback (active load) transimpedance output buffer. The common differential specifications are S11 and S22 < -15dB and S21 > 25dB with output swing >500mV. Results show that the design with the negative feedback output buffer has a lower small-signal bandwidth but a larger 40Gb/s eye opening than design with the conventional differential pair output buffer.

Original languageEnglish (US)
Pages (from-to)2269-2272
Number of pages4
JournalIEEE MTT-S International Microwave Symposium Digest
Volume3
StatePublished - 2003
Externally publishedYes
Event2003 IEEE MTT-S International Microwave Symposium Digest - Philadelphia, PA, United States
Duration: Jun 8 2003Jun 13 2003

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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