Questions
A 1 MHz carrier signal is modulated by a symmetrical sinusoidal wave for period of in a non-linear (square law devices) which of the following frequencies will not present in the modulated signal
detailed solution
Correct option is C
The frequency of modulation signal are from non linear devices are fc, fc±fm, fc±3fm fc=1 MHz=1000 kHz fm=1T=1100×10-6=10 kHz So, frequency present in AM are 1000 kHz, 990 kHz, 1010 kHz, 970 kHz, 1030 kHzTalk to our academic expert!
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If a carrier wave of amplitude 20 mV is modulated by an audio signal of amplitude 4mV, then amplitude of LSB (or)USB is given by
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