4. The system shown below must recover both messages from the frequency-division multiplexed signal whose spectrum is input to it. a) Determine the frequency of the local oscillator; b) determine the bandwidths B, and B2 of the two low-pass filters; and c) sketch the spectra of the output signals, numbering key points on the frequency & amplitude axes. 艹 f(kHz) Wipw -12V 4 cos(27fLal) LPF1 MS) LPF2 MS

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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4. The system shown below must recover both messages from the frequency-division multiplexed signal
whose spectrum is input to it.
a) Determine the frequency of the local oscillator;
b) determine the bandwidths B, and B2 of the two low-pass filters; and
c) sketch the spectra of the output signals, numbering key points on the frequency & amplitude axes.
艹
f(kHz)
Wipw
-12V
4 cos(27fLal)
LPF1
MS)
LPF2
MS
Transcribed Image Text:4. The system shown below must recover both messages from the frequency-division multiplexed signal whose spectrum is input to it. a) Determine the frequency of the local oscillator; b) determine the bandwidths B, and B2 of the two low-pass filters; and c) sketch the spectra of the output signals, numbering key points on the frequency & amplitude axes. 艹 f(kHz) Wipw -12V 4 cos(27fLal) LPF1 MS) LPF2 MS
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