
10-1
10.1 Introduction
Wireless networks permit quick and easy installation, but depend on independent energy sources such
as
batteries
or
on
energy
harvesting.
Energy
eciency
is
therefore
a
common
requirement.
Nevertheless,
in
some
application
domains,
the
solutions
available
in
the
market
are
too
energy
hungry
as
they
are
designed
for
general
purpose
appliances.
Especially
when
wireless
devices
have
to
run
independently
for
a
long
time
and
a
high
miniaturization
allows
only
small
batteries
or
energy-harvesting
modules,
ultralow-power
wir
eless
dev
ices
are nee
ded.
An example is the structural health monitoring of new composite materials for ...