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The amplitude modulated wave form s(t) = AC[1 + Kam(t)]cosωCt is used an ideal envelope detector. The maximum magnitude of Kam(t) is greater than 1. Which of the following could be the detector output?

A. ACm(t)

B. [$${\text{A}}_{\text{C}}^2$$ [1 + Kam(t)]2

C. [AC|1 + Kam(t)|]

D. AC|1 + Kam(t)|2

Answer: Option C


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