Q1. The output signal from a conventional AM modulator is given as s(t)=5 cos(1800лt) + 20 cos(2000лt)+5 cos(2200л) a) Compute and sketch the spectrum of the modulated signal s(t). b) Determine the modulating signal and the carrier signal. What is the amplitude sensitivity factor? c) Determine if an envelope detector can be used to recover m(t). d) Determine the ratio of the power in the sidebands to the power in the carrier. What is the transmission bandwidth?