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For each of the baseband signals: (i) m(t) = cos 1000nt; (ii) m(t) = 2cos 1000tt + sin 20007t; (iii) m(t) = cos 10007t cos 3000t, do the following. (a) Sketch the spectrum of m(t). (b) Sketch the spectrum of the DSB-SC signal m(t) cos 10,000rt. (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra. (d) Identify the frequencies in the baseband, and the corresponding frequencies in the DSB-SC, USB, and LSB spectra. Explain the nature of frequency shifting in each case.

For each of the baseband signals: (i) m(t) = cos 1000nt; (ii) m(t) = 2cos 1000tt + sin 20007t; (iii) m(t) = cos 10007t cos 3000t, do the following. (a) Sketch the spectrum of m(t). (b) Sketch the spectrum of the DSB-SC signal m(t) cos 10,000rt. (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra. (d) Identify the frequencies in the baseband, and the corresponding frequencies in the DSB-SC, USB, and LSB spectra. Explain the nature of frequency shifting in each case.

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 each of the baseband signals: (i) m(t) = cos 1000nt; (ii) m(t) = 2cos 1000rt + sin 2000 t; (iii) m(t) = cos 10007t cos 3000rt, do the following. (a) Sketch the spectrum of m(t). (b) Sketch the spectrum of the DSB-SC signal m(t) cos 10,000r t. (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra. (d) Identify the frequencies in the baseband, and the corresponding frequencies in the DSB-SC, USB, and LSB spectra. Explain the nature of frequency shifting in each case.
Transcribed Image Text:For each of the baseband signals: (i) m(t) = cos 1000nt; (ii) m(t) = 2cos 1000rt + sin 2000 t; (iii) m(t) = cos 10007t cos 3000rt, do the following. (a) Sketch the spectrum of m(t). (b) Sketch the spectrum of the DSB-SC signal m(t) cos 10,000r t. (c) Identify the upper sideband (USB) and the lower sideband (LSB) spectra. (d) Identify the frequencies in the baseband, and the corresponding frequencies in the DSB-SC, USB, and LSB spectra. Explain the nature of frequency shifting in each case.
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