Environmental Engineering Reference
In-Depth Information
transfer characteristic. Let us assume that it is well represented by the first
three power terms
Assuming now the incremental input voltage be a pure sinusoidal tone
the output signal becomes
3
where terms
are
Due to the amplifier nonlinearity, the ideal sinusoid at the input changes
its shape at the output. Indeed, the output signal is a superposition of a
constant term, represented by the coefficient a sinusoidal waveform with
a frequency equal to that at the input multiplied by the coefficient
3
Remember that
and
