A sinusoidal carrier voltage of 80 volts amplitude and 1 MHz frequency is amplitude modulated by a sinusoidal voltage of frequency 5kHz producing 50% modulation. Calculate the amplitude and frequency of lower and upper side bands.

A sinusoidal carrier voltage of 80 volts amplitude and 1 MHz frequency

1.	A sinusoidal carrier voltage of 80 volts amplitude and 1 MHz frequency is amplitude modulated by a sinusoidal voltage of frequency 5kHz producing 50% modulation. Calculate the amplitude and frequency of lower and upper side bands.
Answer» Solution :Amplitude of both LBS and USB are equal and GIVEN by `(MEC)/(2)=(0.5xx80)/(2)=20`volts Now FREQUENCY of LSB =`f_(C)-f_(s)=(1000-5)kHz` Frequency of USB =`f_(C)-f_(s)`=(1000-5)kHz

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A sinusoidal carrier voltage of 80 volts amplitude and 1 MHz frequency is amplitude modulated by a sinusoidal voltage of frequency 5kHz producing 50% modulation. Calculate the amplitude and frequency of lower and upper side bands.

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