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4.4-2 A modulating signal m(t) is given by: (a) m(t) = cos 100n1 + 2 cos 300rt (b) m(t) sin 100nt sin 500mt In each case: (i) Sketch the spectrum of m(t). (ii) Find and sketch the spectrum of the DSB-SC signal 2m(t) cos 1000n t. (iii) From the spectrum obtained in (ii), suppress the LSB spectrum to obtain the USB spectrum. (iv) Knowing the USB spectrum in (ii), write the expression yusB (t) for the USB signal. (v) Repeat (iii) and (iv) to obtain the LSB signal LsB (1).

4.4-2 A modulating signal m(t) is given by: (a) m(t) = cos 100n1 + 2 cos 300rt (b) m(t) sin 100nt sin 500mt In each case: (i) Sketch the spectrum of m(t). (ii) Find and sketch the spectrum of the DSB-SC signal 2m(t) cos 1000n t. (iii) From the spectrum obtained in (ii), suppress the LSB spectrum to obtain the USB spectrum. (iv) Knowing the USB spectrum in (ii), write the expression yusB (t) for the USB signal. (v) Repeat (iii) and (iv) to obtain the LSB signal LsB (1).

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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4.4-2 A modulating signal m(t} is given by: (a) m(t) = cos 100n1 + 2 cos 300nt (b) m(t) sin 100nt sin 500mt In each case: (i) Sketch the spectrum of m(t). (ii) Find and sketch the spectrum of the DSB-SC signal 2m(t) cos 1000n t. (iii) From the spectrum obtained in (ii), suppress the LSB spectrum to obtain the USB spectrum. (iv) Knowing the USB spectrum in (ii), write the expression yusB (t) for the USB signal. (v) Repeat (iii) and (iv) to obtain the LSB signal LsB (1).
Transcribed Image Text:4.4-2 A modulating signal m(t} is given by: (a) m(t) = cos 100n1 + 2 cos 300nt (b) m(t) sin 100nt sin 500mt In each case: (i) Sketch the spectrum of m(t). (ii) Find and sketch the spectrum of the DSB-SC signal 2m(t) cos 1000n t. (iii) From the spectrum obtained in (ii), suppress the LSB spectrum to obtain the USB spectrum. (iv) Knowing the USB spectrum in (ii), write the expression yusB (t) for the USB signal. (v) Repeat (iii) and (iv) to obtain the LSB signal LsB (1).
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