expression of modulated signal into two orthogonal components, one can see
that in the case of AM [>>] only the real component U1
exists. [>>] The splitting network is driven by a single signal um
is making the imaginary component – zero and real component U1.
The dependent source multiplies the input signal by a constant and adds it to
a DC source that represents the amplitude of carrier. [>>] The network
is actually linear and we just have to replace the excitation um
by phasor source VAC for analysis.