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1. a. For a baseband signal m(t) = cos wmt = cos 27 fmt, Find the DSB-SC signal and sketch its spectrum. Identify the USB and LSB. b. For each of the baseband signal: (i) sketch the spectrum m(t), (ii) sketch the spectrum of the DSB-SC signal m(t)cos 10,000nt, (iii) Identify the USB and LSB. (i) m(t) = cos 1000r t; (ii) m(t) (iii) m(t) = cos 10007 i cos 300071, с. You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos (wet+0), where m(t) is a signal band-limited to B Hz. Figure P4.2-4 shows a DSB-SC modulator available in the stock room. The carrier generator avaitable generates not cos wet, but cos³ wet. Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. (a) What kind of filter is required in Fig. P4.2-3? (b) Determine the signal spectra at points b and e, and indicate the frequency bands occupied by these spectra. MS) km(1) cos a, Filter cos ca (a) (b)

1. a. For a baseband signal m(t) = cos wmt = cos 27 fmt, Find the DSB-SC signal and sketch its spectrum. Identify the USB and LSB. b. For each of the baseband signal: (i) sketch the spectrum m(t), (ii) sketch the spectrum of the DSB-SC signal m(t)cos 10,000nt, (iii) Identify the USB and LSB. (i) m(t) = cos 1000r t; (ii) m(t) (iii) m(t) = cos 10007 i cos 300071, с. You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos (wet+0), where m(t) is a signal band-limited to B Hz. Figure P4.2-4 shows a DSB-SC modulator available in the stock room. The carrier generator avaitable generates not cos wet, but cos³ wet. Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. (a) What kind of filter is required in Fig. P4.2-3? (b) Determine the signal spectra at points b and e, and indicate the frequency bands occupied by these spectra. MS) km(1) cos a, Filter cos ca (a) (b)

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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1. a. For a baseband signal m(t) = cos wmt = cos 2n fmt, Find the DSB-SC signal and sketch its spectrum. Identify the USB and LSB. b. For each of the baseband signal: (i) sketch the spectrum m(t). (ii) sketch the spectrum of the DSB-SC signal m(t)cos 10,000rnt, (ii) Identify the USB and LSB. (i) т() = cos 1000xt; (ii) m(t) (iii) m(t) = cos 10007I cos 30007 {, с. You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos (wei+0), where m(t) is a signal band-limited to B Hz. Figure P4.2-4 shows a DSB-SC modulator available in the stock room. The carrier generator avaitable generates not cos wet, but cos³ wct. Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. (a) What kind of filter is required in Fig. P4.2-3? (b) Determine the signal spectra at points b and c, and indicate the frequency bands occupied by these spectra. km(1) cos at MS) Filter cos ca (a)
Transcribed Image Text:1. a. For a baseband signal m(t) = cos wmt = cos 2n fmt, Find the DSB-SC signal and sketch its spectrum. Identify the USB and LSB. b. For each of the baseband signal: (i) sketch the spectrum m(t). (ii) sketch the spectrum of the DSB-SC signal m(t)cos 10,000rnt, (ii) Identify the USB and LSB. (i) т() = cos 1000xt; (ii) m(t) (iii) m(t) = cos 10007I cos 30007 {, с. You are asked to design a DSB-SC modulator to generate a modulated signal km(t) cos (wei+0), where m(t) is a signal band-limited to B Hz. Figure P4.2-4 shows a DSB-SC modulator available in the stock room. The carrier generator avaitable generates not cos wet, but cos³ wct. Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. (a) What kind of filter is required in Fig. P4.2-3? (b) Determine the signal spectra at points b and c, and indicate the frequency bands occupied by these spectra. km(1) cos at MS) Filter cos ca (a)
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