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TWODIMENSIONAL SIMULATIONS OF CUTOFF FREQUENCY CHARACTERISTICS FOR AlGaAsGaAs HBTs WITH PLANAR STRUCTURES

TWODIMENSIONAL SIMULATIONS OF CUTOFF FREQUENCY CHARACTERISTICS FOR AlGaAsGaAs HBTs WITH PLANAR... Cutoff frequency T characteristics for AlGaAsGaAs HBTs with planar structures are studied, by twodimensional simulation, with an emphasis placed on their dependences on the collector parameters. It is shown that the subcollector resistance becomes an important factor to achieve a higher T in the high current region, and so it should be made as low as possible. Effects of introducing semiinsulating external collectors are also studied. It is shown that the introduction of semiinsulating layer is effective to improve the T characteristics provided that it is slightly away from the intrinsic collector region. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering Emerald Publishing

TWODIMENSIONAL SIMULATIONS OF CUTOFF FREQUENCY CHARACTERISTICS FOR AlGaAsGaAs HBTs WITH PLANAR STRUCTURES

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References (9)

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0332-1649
DOI
10.1108/eb051808
Publisher site
See Article on Publisher Site

Abstract

Cutoff frequency T characteristics for AlGaAsGaAs HBTs with planar structures are studied, by twodimensional simulation, with an emphasis placed on their dependences on the collector parameters. It is shown that the subcollector resistance becomes an important factor to achieve a higher T in the high current region, and so it should be made as low as possible. Effects of introducing semiinsulating external collectors are also studied. It is shown that the introduction of semiinsulating layer is effective to improve the T characteristics provided that it is slightly away from the intrinsic collector region.

Journal

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic EngineeringEmerald Publishing

Published: Apr 1, 1993

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