This article discusses the use of heterostructure bipolar transistor (
HBT) TCs in telecommunication system products. Of particular interest
is the fit between HBT ICs and telecommunication system needs, in term
s of commercial criteria as well as performance. Two areas are selecte
d as examples of the telecommunications equipment marketplace: fiber-o
ptic transmission and wireless access. The fit between fiber and HBT I
Cs is plainly apparent, and while it is less obvious, HBT ICs are comp
etitive for some applications in the case of wireless. (C) 1997 Elsevi
er Science Ltd.