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DSB-SC Modulator ☑► Low-pass Filter DSB-SC Modulator 2 cos 2π fit 90º Phase Message signal shift Oscillator 1 Oscillator 2 m(t) W 2 sin 2π fit 2 sin 2π f2t 90º Phase shift 2 cos 2π f2t DSB-SC Modulator Low-pass DSB-SC D Filter Modulator Figure 2: Weaver's SSB modulator ΣΗ SSB signal

DSB-SC Modulator ☑► Low-pass Filter DSB-SC Modulator 2 cos 2π fit 90º Phase Message signal shift Oscillator 1 Oscillator 2 m(t) W 2 sin 2π fit 2 sin 2π f2t 90º Phase shift 2 cos 2π f2t DSB-SC Modulator Low-pass DSB-SC D Filter Modulator Figure 2: Weaver's SSB modulator ΣΗ SSB signal

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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For the picture attached below the parameters are the following:

f1 = 400 Hz

m(t) = sin(2 fmt), where fm = 300 Hz.

Assume ideal LPFs with a cut-o frequency
 of f1.

What would be the value of frequency f2 be so that the carrier frequency is 2.5kHz?

What modification of this system is required to generate USSB (at the same carrier frequency)? ( Note: this does not involbe changing the oscillator frequencies)

DSB-SC Modulator ☑► Low-pass Filter DSB-SC Modulator 2 cos 2π fit 90º Phase Message signal shift Oscillator 1 Oscillator 2 m(t) W 2 sin 2π fit 2 sin 2π f2t 90º Phase shift 2 cos 2π f2t DSB-SC Modulator Low-pass DSB-SC D Filter Modulator Figure 2: Weaver's SSB modulator ΣΗ SSB signal
Transcribed Image Text:DSB-SC Modulator ☑► Low-pass Filter DSB-SC Modulator 2 cos 2π fit 90º Phase Message signal shift Oscillator 1 Oscillator 2 m(t) W 2 sin 2π fit 2 sin 2π f2t 90º Phase shift 2 cos 2π f2t DSB-SC Modulator Low-pass DSB-SC D Filter Modulator Figure 2: Weaver's SSB modulator ΣΗ SSB signal
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