Question

Sinusoidal carrier voltage of frequency 1.5 mhz and amplitude 50v is amplitude modulated by sinusoidal voltage of frequency 10 khz producing 50% modulation. The lower and upper side-band frequencies in khz are

Answer 1

Answer:

Here, fc=1.5 MHz=1500 kHz, fm=10 kHz

Here, fc=1.5 MHz=1500 kHz, fm=10 kHz∴ Low side band frequency =fc−fm=1500kHz−10kHz=1490 kHz

Here, fc=1.5 MHz=1500 kHz, fm=10 kHz∴ Low side band frequency =fc−fm=1500kHz−10kHz=1490 kHzUpper side band frequency =fc+fm=1500kHz+10kHz=1510 kHz

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