BEN-GURION UNIVERSITY OF THE NEGEV
Proposed Method – Small Signal
Analysis Using AC–Simulation
The source is linear and suitable
for AC analysis – as is
For example: Amplitude Modulation.
Expanding the expression of modulated signal into two orthogonal components, one can see that in the case of AM
only the real component U
The splitting network is driven by a single signal u
is making the imaginary component – zero and real component U
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 u
by phasor source VAC for analysis.