The unmodulated carrier is given by 110 cos(200лt), and the system operates with an index of 0.8. (a) Write the equation for m(t), the normalized sig- nal with a minimum value of −1. (b) Determine (m²(t)), the power in m„(t). (c) Determine the efficiency of the modulator. (d) Sketch the double-sided spectrum of x (t), the modulator output, giving the weights and fre- quencies of all components. 3.9 Rework Problem 3.8 for the message signal m(t) = 9 cos(20лt) + 8 cos(60лt)

The unmodulated carrier is given by 110 cos(200лt), and the system operates with an index of 0.8. (a) Write the equation for m(t), the normalized sig- nal with a minimum value of −1. (b) Determine (m²(t)), the power in m„(t). (c) Determine the efficiency of the modulator. (d) Sketch the double-sided spectrum of x (t), the modulator output, giving the weights and fre- quencies of all components. 3.9 Rework Problem 3.8 for the message signal m(t) = 9 cos(20лt) + 8 cos(60лt)

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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