Questions
A sinusoidal carrier voltage of 80 volts amplitude and 1 MHz frequency is amplitude modulated by a sinusoidal voltage of frequency 5 kHz producing 50% modulation. Calculate the amplitude and frequency of lower and upper side bands
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Correct option is C
Amplitude of both LSB and USB are equal =mEc2=0.5 x 802=20 V Now, frequency of LSB = fc−fm=1000−5kHz=995kHz frequency of USB = fc+fm=1000+5kHz=1005kHzSimilar Questions
A message signal of frequency 10 kHz and peak voltage of 10 volts is used to modulate a carrier of frequency 1 MHz and peak voltage of 20 volts. The side bands are 1010 kHz and______________kHz.
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