Q15.29Multiple choice
- (i)Draw the plot of amplitude versus ‘ω’ for an amplitude modulated wave whose carrier wave (ωc) is carrying two modulating signals, ω1 and ω2 (ω2 > ω1). [Hint: Follow derivation from Eq 15.6 of NCERT Textbook of XII]
- (ii)Is the plot symmetrical about ωc? Comment especially about plot in region ω < ωc.
- (iii)Extrapolate and predict the problems one can expect if more waves are to be modulated.
- (iv)Suggest solutions to the above problem. In the process can one understand another advantage of modulation in terms of bandwidth?