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  4. A physical, yet simple, small-signal equivalent circuit for the heterojunction bipolar transistor
 
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1997
Journal Article
Title

A physical, yet simple, small-signal equivalent circuit for the heterojunction bipolar transistor

Other Title
Ein physikalisches, einfaches Kleinsignal-Ersatzschaltbild für den Heterobipolartransistor
Abstract
A physical, yet simple, small-signal equivalent circuit for the heterojunction bipolar transistor (HBT) is proposed. This circuit was established by analysing in detail the physical operation of the HBT. The model verification was carried out by comparison of the measured and simulated S- and Z-parameters for both passive (reverse-biased) and active bias conditions. A feature of this model is that it uses a direct extraction method to determine the parasitic elements, in particular, the parasitic capacitances. The excellent agreement between the measured and simulated parameters was verified all over the frequency range from 0.25 to 75 GHz.
Author(s)
Gobert, Y.
Tasker, P.J.
Bachem, K.H.
Journal
IEEE transactions on microwave theory and techniques  
DOI
10.1109/22.552048
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • HBT

  • Kleinsignalersatzschaltbild

  • S-Parameter

  • small signal equivalent circuit

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