A carrier signal Ct=25sin2.512×1010t is amplitude modulated by a message signal mt=5sin1.57×108t and transmitted through an antenna. What will be the bandwidth of the modulated signal?
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a
1987.5 MHz
b
50 MHz
c
2.01 GHz
d
8 GHz
answer is B.
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Detailed Solution
Band width = fm+fm=2fmfm=wm2π=1.57×1082π=0.25×108 Hz Band width = 50 MHz