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Ex 4-2: Find the modulation index and modulation depth if a carrier signal given by 8 cos 2n * 105t is modulated by the signal shown below using AM/DSB-LC technique. f(t) Solution: Ac = 8 v f(t)min = -6 v 6v 3*10*v -f(t)min 0.75 m = 10*v 4 10 v .... D = m x 100% -0.75% -6v The modulated signal waveform may be plotted as shown: ФАм (1) A. 14 2 -A. -2 -8 -14

Ex 4-2: Find the modulation index and modulation depth if a carrier signal given by 8 cos 2n * 105t is modulated by the signal shown below using AM/DSB-LC technique. f(t) Solution: Ac = 8 v f(t)min = -6 v 6v 3*10*v -f(t)min 0.75 m = 10*v 4 10 v .... D = m x 100% -0.75% -6v The modulated signal waveform may be plotted as shown: ФАм (1) A. 14 2 -A. -2 -8 -14

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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a) Write the equation of the modulated wave in example 4-2.

b) sceteh the waveform of modulated write its equation if the modulation type is AM/DSB- SC.

Ex 4-2: Find the modulation index and modulation depth if a carrier signal given by 8 cos 27 * 105t is modulated by the signal shown below using AM/DSB-LC technique. f(1) Solution: Ac = 8 v f (t)min = -6 v 6v 3*10*v -f(t)min 0.75 m = %3D Ac 10ʻv 4 10"v D = m x 100% =0.75% -6v The modulated signal waveform may be plotted as shown: ФАм (1) A. 14 2 -A. -8 -14
Transcribed Image Text:Ex 4-2: Find the modulation index and modulation depth if a carrier signal given by 8 cos 27 * 105t is modulated by the signal shown below using AM/DSB-LC technique. f(1) Solution: Ac = 8 v f (t)min = -6 v 6v 3*10*v -f(t)min 0.75 m = %3D Ac 10ʻv 4 10"v D = m x 100% =0.75% -6v The modulated signal waveform may be plotted as shown: ФАм (1) A. 14 2 -A. -8 -14
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