A message signal m t cos 2000nt 2 cos 4000nt modulates


A message signal m (t) = cos 2000nt + 2 cos 4000nt modulates the carrier c (t) = 100 cos 2 π­fct, where fc = 1 MHz to produce the DSB signal m (t) c (t).

1. Determine the expression for the upper-sideband (USB) signal.

2. Determine and sketch the spectrum of the USB signal.

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Electrical Engineering: A message signal m t cos 2000nt 2 cos 4000nt modulates
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