AM wave may be represented as
AM wave may be represented as E(t) cos ωct where E(t) is
a.) Envelope of the AM wave
b.) Carrier signal
c.) Amplitude of modulating signal
d.) None of the above
Correct Answer: a) Envelope of the AM wave
Explanation:
An AM wave may be represented by
s(t) = [A+ x(t)] cos ωct
= E(t) cos ωct
Where x(t) is the modulating signal
A is the amplitude of carrier wave
E(t) is the Envelope of the AM wave
The envelope consists of the modulating signal that may be recovered from AM signal using demodulation techniques.
