Q7. Figure Q7 shows a modulated waveform v(t) in millivolts as a function of time t innanoseconds.1.51.00.5 -0.0-0.5-1.0-1.5100200300400500t/nsFigure Q7: Modulated waveform(a) Describe the modulation scheme.(b) What are the values of the carrier frequency and the modulation frequency?(c) What is the value of the modulation index?(d) What is the transmission efficiency (ratio of modulated to total power) in this example?(e) Sketch the spectrum of this modulated waveform indicating the relative magnitudes ofthe various spectral components.(f) Demodulation of this type of waveform is usually performed with an envelope detector.Describe the function of an envelope detector and sketch an example circuit.(g) What requirements on the values of the components of your envelope detector circuitare there for the successful demodulation of the given waveform?(h) Keeping the same carrier wave, the modulating wave in this example is substitutedwith a square wave of 50% duty cycle and of fundamental frequency 2 MHz. Sketchthe spectrum of the modulated waveform indicating the frequencies and relative mag-nitudes of the sideband components.

A message signal is transferred from the sender to the receiver end. The signal is transmitted…

Q7. Figure Q7 shows a modulated waveform v(t) in millivolts as a function of time t in nanoseconds. 1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 - 100 200 300 400 500 t/ns Figure Q7: Modulated waveform (a) Describe the modulation scheme. (b) What are the values of the carrier frequency and the modulation frequency? (c) What is the value of the modulation index? v(t)/mV

Q7. Figure Q7 shows a modulated waveform v(t) in millivolts as a function of time t in nanoseconds. 1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 - 100 200 300 400 500 t/ns Figure Q7: Modulated waveform (a) Describe the modulation scheme. (b) What are the values of the carrier frequency and the modulation frequency? (c) What is the value of the modulation index? v(t)/mV

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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