Question
Download Solution PDFWhat is the total power carried by sidebands of the AM wave (DSB) for tone modulation of μ = 0.4 ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The generalized AM expression is represented as:
s(t) = Ac [1 + μa mn (t)] cos ωc t
The total transmitted power for an AM system is given by:
Pc = Carrier Power
μ = Modulation Index
The above expression can be expanded to get:
The total power is the sum of the carrier power and the sideband power, i.e.
Analysis:
Total sideband power is calculated as:
% of sideband power is given as:
⇒
⇒
putting μ = 0.4, we get
⇒
= 7.4 %
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