An ABT model for InP-based single HBT's (SHBT's) was developed based o
n the conventional Gummel-Poon large-signal BJT model available in HSP
ICE. Several typical characteristics observed from InP-based SHBT's, s
uch as soft breakdown and collector transit-time delay effects, were m
odeled through a macro modeling approach. Excellent agreement has been
achieved between the experimental and calculated results based on the
model.