Suppressed Carrier Amplitude Modulation
Fig 1 System Level Block Diagram of Suppressed Carrier AM
Fig 2
Simulink Block Diagram of Suppressed Carrier AM
Generated Sine wave = 1sin(1000*2*pi*t) This is the Carrier Frequency.
x(t) = 1sin(200*2*pi*t) This is the signal entered into the system.
Scope Plots
Fig 3 Experimental AM plot, Time domain
Fig 4 FFT of Fig 3
Note the carrier frequency is 1000Hz and the signal, x(t) is 1000Hz +/- 200Hz
MATLAB Simulations
Fig 5 Simulations of AM in MATLAB. Shown in Time and Frequency Domain.
These simulations are comparable to what was found in lab.
Demodulation
For demodulation, a phase locked loop and low pass filter are required.