2) You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos wc t, wherem(t) is a signal band-limited to B Hz. Figure below shows a DSB-SC modulator available in the stockroom. The carrier generator available generates not cos wc t, but cos3 wc t.M(f)km(t)cos³ w̟tm(t)AFilterbf-BВcos wcta) Sketch the signal spectra at points a and b.(a:1,b:8)b) Is it possible to realize a DSB-SC modulator as in the figure above? (If yes) what kind of filtershould be used? Comment on the bandwidth of the filter and the minimum and/or maximumfrequencies that the filter should allow to pass.c) What is the minimum usable value of wc?

At point a: At point b: xt=34mtcosωct+mt4cos3ωctXω=38Mω-ωc+38Mω+ωc+18Mω-3ωc+Mω+3ωc

2) You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos wc t, where m(t) is a signal band-limited to B Hz. Figure below shows a DSB-SC modulator available in the stock room. The carrier generator available generates not cos wc t, but cos3 wc t. M(f) km(t)cos³ wet m(t) A Filter f a B B cos³ wct a) Sketch the signal spectra at points a and b.(a:1,b:8) b) Is it possible to realize a DSB-SC modulator as in the figure above? (If yes) what kind of filter should be used? Comment on the bandwidth of the filter and the minimum and/or maximum frequencies that the filter should allow to pass. c) What is the minimum usable value of wc?

2) You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos wc t, where m(t) is a signal band-limited to B Hz. Figure below shows a DSB-SC modulator available in the stock room. The carrier generator available generates not cos wc t, but cos3 wc t. M(f) km(t)cos³ wet m(t) A Filter f a B B cos³ wct a) Sketch the signal spectra at points a and b.(a:1,b:8) b) Is it possible to realize a DSB-SC modulator as in the figure above? (If yes) what kind of filter should be used? Comment on the bandwidth of the filter and the minimum and/or maximum frequencies that the filter should allow to pass. c) What is the minimum usable value of wc?

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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