Improved approach for determination of pad model parameters for SiGe HBT

  • Yongli Wang*
  • , Ling Sun
  • , Jianjun Gao
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A new method for determining the pad parasitic elements of Si-based devices is presented. Comparison between the new method and approximation method shows that the parasitic elements of the pad extracted by linear fitting method presented in this paper is more accurate. Once the pad parameters are obtained, small-signal equivalent circuit parameters of SiGe HBT implemented with AMS 0.35 μm BiCOMS technology are extracted. The extrinsic resistances are determined under 'over drive IB' bias condition, and the intrinsic elements are all calculated by using analytical method. Good agreement is achieved between simulated and measured results of the transistor over the test frequency range.

Original languageEnglish
Pages (from-to)493-497+544
JournalGuti Dianzixue Yanjiu Yu Jinzhan/Research and Progress of Solid State Electronics
Volume27
Issue number4
StatePublished - Nov 2007
Externally publishedYes

Keywords

  • Heterojunction bipolar transistor (HBT)
  • Pad
  • Parameter extraction
  • SiGe

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