L773:0038 1101
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- Linder, M. (author)
On DC modeling of the base resistance in bipolar transistors
- Article/chapterEnglish2000
Publisher, publication year, extent ...
- 2000
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-19929
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-19929URI
- https://doi.org/10.1016/S0038-1101(00)00075-7DOI
- https://research.chalmers.se/publication/9379URI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- QC 20100525
- The total base resistance R-BTot constitutes a crucial parameter in modeling bipolar transistors. The significant physical effects determining R-BTot are current crowding and conductivity modulation in the base, both causing reduction of R-BTot With increasing base current I-B. In this paper, it is shown that the reduction of R-BTot(I-B) With increasing I-B is directly related to the physical effect dominating in the base. A new model for R-BTot(I-B) is presented where a parameter alpha is introduced to account for the contributions of current crowding and conductivity modulation in the base. Theoretically, alpha is equal to 0.5 when conductivity modulation is dominant and close to 1.0 when current crowding is the most significant effect. This was verified by measurements and simulations using a distributed transistor model which accounts for the lateral distribution of the base current and the stored base charge. The model proposed for R-BTot(I-B) is very suitable for compact transistor modeling since it is given in a closed form expression handling both current crowding and conductivity modulation in the base. An accurate extraction procedure of the model parameters is also presented.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
- model
- bipolar transistor
- base resistance
- current crowding
- conductivity modulation
- distributed model
- series resistances
Added entries (persons, corporate bodies, meetings, titles ...)
- Ingvarson, Fredrik,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ingvarso (author)
- Jeppson, Kjell,1947Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jeppson (author)
- Grahn, J. V. (author)
- Zhang, Shi-LiKTH,Mikroelektronik och informationsteknik, IMIT(Swepub:kth)u1a28qyq (author)
- Östling, MikaelKTH,Mikroelektronik och informationsteknik, IMIT(Swepub:kth)u1u0kle4 (author)
- Chalmers tekniska högskolaMikroelektronik och informationsteknik, IMIT (creator_code:org_t)
Related titles
- In:Solid-State Electronics44:8, s. 1411-14180038-11011879-2405
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