Electronics and Communication Engineering - Exam Questions Papers - Discussion


Consider an AM system using a square law detector as shown in figure.

XC(t) = AC[1 + u x (t)] cos ωct, |ux(t)| << 1
The signal power at the output is :

[A]. A2Cu2 E[x2(t)]
[B]. A2Cu2 E(x)
[D]. None

Answer: Option A


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