Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Q11: An AM modulation waveform signal: $(t) = (1+ 0.5 cos 2000nt + 0.5 cos 4000nt) cos 20000nt (a) Sketch the amplitude spectrum of $(t). (b) Find total power, sideband power and power efficiency. (c) Find the average power containing of each sideband. (d) What is the modulation index?
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Transcribed Image Text:Q11: An AM modulation waveform signal: $(t) = (1+ 0.5 cos 2000nt + 0.5 cos 4000nt) cos 20000nt (a) Sketch the amplitude spectrum of $(t). (b) Find total power, sideband power and power efficiency. (c) Find the average power containing of each sideband. (d) What is the modulation index?
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