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s23_cgs

# s23_cgs - Amplitude Modulation with Carrier Consider the...

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Amplitude Modulation with Carrier Consider the signal y ( t ) = cos(2 πf c t ) [ A + u ( t )] where w ( t ) = cos(2 πf c t ) is the carrier signal, u ( t ) is the modulating signal, and A is a constant. u ( t ) has spectrum (Fourier transform) as shown below: U(f) f f B -f B The carrier frequency, f c , is much greater than the bandwidth, f B , of the modulating signal. Sketch the transform of the signal y ( t ) on a 3 × 5 card.

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Amplitude Modulation with Carrier Consider the signal y ( t ) = cos(2 πf c t ) [ A + u ( t )] where w ( t ) = cos(2 πf c t ) is the carrier signal, u ( t ) is the modulating signal, and A is a constant. The carrier frequency, f c , is much greater than the bandwidth, f B
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s23_cgs - Amplitude Modulation with Carrier Consider the...

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