Q25: The figure below shows a DSB -SC modulator. The carrier a vailable at the multiplier is a distorted sinusoid given by a,cosw.t + a,cos?w̟t . The spectrum of f(t) is shown in fig. shown: f(t) (X) Filter kf(t)cos @t (a) Determine the signals and sketch their distorted carrier spectra at points b & c. F(@) (b) What kind of filter is required in fig? (c) What is minimum value of Wc required for this scheme to work -2nB 2nB Ans:4nB rad/sec.

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Type your question here The figure below shows a DSB -SC modulator. The carrier a vailable at the multiplier is a distorted sinusoid given by a cosw̟t + a2cos²w̟t The spectrum of f(t) is shown in fig. shown: (a) Determine the signals and sketch their spectra at points b & c. (b) What kind of filter is required in fig? (c) What is minimum value of we required for this scheme to work
Q25: The figure below shows a DSB -SC modulator. The carrier a vailable at the
multiplier is a distorted sinusoid given by a cosw.t + azcos²wt . The
spectrum of f(t) is shown in fig. shown:
a
f(t)
(X)
Filter
kf(t)cos @t
(a) Determine the signals and sketch their
distorted
carrier
spectra at points b & c.
F(@)
(b) What kind of filter is required in fig?
(c) What is minimum value of we required
for this scheme to work
-2xB
2nB
Ans:4nB rad/sec.
Transcribed Image Text:Q25: The figure below shows a DSB -SC modulator. The carrier a vailable at the multiplier is a distorted sinusoid given by a cosw.t + azcos²wt . The spectrum of f(t) is shown in fig. shown: a f(t) (X) Filter kf(t)cos @t (a) Determine the signals and sketch their distorted carrier spectra at points b & c. F(@) (b) What kind of filter is required in fig? (c) What is minimum value of we required for this scheme to work -2xB 2nB Ans:4nB rad/sec.
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