A message to be transmitted using AM is given by m(t) = 2cos(2πt) + 4sin(6nt) where the unit of time is milliseconds. It is to be sent using a carrier frequency of 600kHz. a. What is the message bandwidth? Sketch its magnitude spectrum, clearly specifying the units used on the axes. b. For a modulation index of 50%, write an explicit time-domain expression for the AM signal. c. Sketch the magnitude spectrum for the AM signal, clearly specifying the units used on the axes.

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A message to be transmitted using AM is given by
m(t) 2cos(2πt) + 4sin(6nt)
where the unit of time is milliseconds. It is to be sent using a carrier frequency of 600kHz.
a. What is the message bandwidth? Sketch its magnitude spectrum, clearly specifying
the units used on the axes.
b.
For a modulation index of 50%, write an explicit time-domain expression for the AM
signal.
Sketch the magnitude spectrum for the AM signal, clearly specifying the units used
on the axes.
C.
Transcribed Image Text:A message to be transmitted using AM is given by m(t) 2cos(2πt) + 4sin(6nt) where the unit of time is milliseconds. It is to be sent using a carrier frequency of 600kHz. a. What is the message bandwidth? Sketch its magnitude spectrum, clearly specifying the units used on the axes. b. For a modulation index of 50%, write an explicit time-domain expression for the AM signal. Sketch the magnitude spectrum for the AM signal, clearly specifying the units used on the axes. C.
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