5. If a message signal xm(t) = 3*cos(8000rt) is modulated by a carrier signal xe(t) = 4*cos(100000rt), then find: %3D a. Modulation index. b. Carrier frequency. c. Message frequency. d. Bandwidth of the modulated signal. e. Total power of the modulated signal. Hint: Solve for DSB-LC and DSB-SC AM modulation.

5. If a message signal xm(t) = 3cos(8000rt) is modulated by a carrier signal xe(t) = 4cos(100000rt), then find: %3D a. Modulation index. b. Carrier frequency. c. Message frequency. d. Bandwidth of the modulated signal. e. Total power of the modulated signal. Hint: Solve for DSB-LC and DSB-SC AM modulation.

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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03: The output voltage of a transmitter is given by the following envelope wave form. This voltage is fed to a load (RL= 12). What is the name of the modulator that can be used to generate DSB-AM, and draw the block diagram of this modulator? Then find: (a) The carrier frequency and the message frequency. (b) The double side band frequencies (USB and LSB). (c) The modulation index. (d) The carrier power and power in sidebands. (e) The total power. (f) Write the modulated wave equation at the output of the transmitter. Amplitude 20 volts 40 volts 20 Acti JA see. Go to
A carrier signal is amplitude modulated by a sinewave. The resulting AM waveform is shown below. 3.5V- 1V- a) What is the amplitude of the carrier signal? b) c) To achieve 75 percent modulation, what amplitude of the modulating signal is needed? d) Calculate the effective voltage of the AM signal What is the modulation index?
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IX. A carrier signal is amplitude modulated by a sinewave. The resulting AM waveform is shown below. a) b) c) d) 5.5V- 2V What is the percentage of modulation? What is the amplitude of the carrier signal? To achieve 75 percent modulation, what amplitude of the modulating signal is needed? Calculate the effective voltage of the AM signal
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