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Tuned amplifier
A
tuned
amplifier
is an
electronic amplifier
which includes
bandpass
filtering
components
within the amplifier
circuitry
. They are widely used in a
variety
of
wireless
applications
.
There are several
tuning
schemes
in use,
Staggered tuning
where each
amplifier stage
is tuned to a slightly different
frequency
.
Synchronous tuning
where each amplifier stage is tuned identically. This
scheme
maximises the
amplifier gain
but has narrower
bandwidth
than
staggered tuning
.
Double-tuned amplifier
. This scheme is used on amplifier
stages
that are transformer-coupled rather than
capacitor
coupled
. Both the
primary
and secondary
coils
of the
transformer
are tuned. This has the
effect
of
widening
the bandwidth. Other tuning schemes are sometimes called
single-tuned
to distinguish them.
