The output signal from an AM modulator is
u(t)=5cos(1800\pi t)+20cos(2000\pi t)+5cos(2200\pi t).
a) Determine the message signal
m(t)
and the carrier
c(t)
. [Hint: Look at the spectrum of
u(t)
b) What is the modulation index and the power efficiency.

Question

The output signal from an AM modulator is

u(t)=5cos(1800\pi t)+20cos(2000\pi t)+5cos(2200\pi t).

a) Determine the message signal

m(t)

and the carrier

c(t)

. [Hint: Look at the spectrum of

u(t)

b) What is the modulation index and the power efficiency.

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Solution for - The output signal from an AM modulator is u(t)=5cos(1800 pi t)+20cos(2000 pi t)+5cos(2200 pi t). a)

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(Solved): The output signal from an AM modulator is u(t)=5cos(1800\pi t)+20cos(2000\pi t)+5cos(2200\pi t). a) ...