Title

Calculation Of The Collector Signal Delay Time Of Hbt'S Based On A Piecewise-Linear Velocity Profile

Abstract

We present a systematic method for calculating the frequency-dependent collector signal delay time τ′CT and the cutoff frequency fT of the heterojunction bipolar transistor (HBT). The method is developed based on the assumption that fT is limited by τ′CT. Furthermore, a piecewise-liner drift velocity profile is employed to account for velocity overshoot in the base-collector junction. Previous works employing the low-frequency approximation or the step-wise drift velocity profile, which assumes a constant velocity in the overshoot region, are also briefly reviewed and discussed. © 1993.

Publication Date

1-1-1993

Publication Title

Solid State Electronics

Volume

36

Issue

5

Number of Pages

693-696

Document Type

Review

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/0038-1101(93)90236-J

Socpus ID

0027592963 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0027592963

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