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Question
Draw a schematic sketch showing how amplitude modulated signal is obtained by superposing a modulating signal over a sinusoidal carrier wave.
Solution
Amplitude modulated signal is obtained by superposing a modulating signal over a sinusoidal carrier wave is shown in the figure given below
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RELATED QUESTIONS
Explain any two factors that justify the need of modulating a low-frequency signal.
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Define the term 'amplitude modulation'
Explain any two factors which justify the need for modulating a low frequency base-band signal.
Write two advantages of frequency modulation over amplitude modulation.
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In amplitude modulation, the modulation index m, is kept less than or equal to 1 because ______.
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- Extrapolate and predict the problems one can expect if more waves are to be modulated.
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An amplitude-modulated wave is represented by Cm(t) = 10(1 + 0.2 cos 12560t) × sin (111 × 104t) volts. The modulating frequency in kHz will be ______.
