Ring Modulation

Ring Modulator is an electronic circuit which modulate signal with Amplitude modulation.
In this code I have designed square signal which act as switching signal produced by ring modulator circuit with four diode combination.
We only multiply this square signal with message signal and observe waveform for both time and frequency domain.
Design a Band-pass filter with following specifications
Band-pass, Window, Hamming Order=100 (or any)
Cutoff frequency
f1=fc-fm, f2=fc+fm
NOTE: First export filter into workspace and then uncomment filter section from code then you run it.