One way of desigining a low-noise amplifier is
the shunting of several input
stages. This reduces the overall noise,
Un=U(i)n-1/2, where Un is the total noise
potential of n stages: Ui is the noise voltage
of one stage: and n is the number of
stages. This design is entirely feasible
because noise is a randomly composed
signal. Therefore, the noise signals of a
number of stages at any one moment
are highly likely to have a diferent frequency
and phase, so that they partly
neutralize one another.
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