Q1: For the sinusoidaly modulated DSB/LC waveform shown in Fig. below. a- Find the modulation index. b- Sketch a line spectrum. c- Calculated the ratio of average power in the sidebands to that in the carrier. d- Determine the amplitude of the additional carrier, which must be added to obtain a modulation index of 10% O(t) Ans: (a) 0.33 100v 50v (b)0.055.

Q1: For the sinusoidaly modulated DSB/LC waveform shown in Fig. below. a- Find the modulation index. b- Sketch a line spectrum. c- Calculated the ratio of average power in the sidebands to that in the carrier. d- Determine the amplitude of the additional carrier, which must be added to obtain a modulation index of 10% O(t) Ans: (a) 0.33 100v 50v (b)0.055.

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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q/A given AM (DSB – LC) transmitter develops an unmodulated power outputof 1 kW. Across 50Ω resistive load. When a sinusoidal test tone with a peakamplitude of 5? is applied to the input of the modulator, it is found that thespectral line for each sideband in the magnitude spectrum for the output is 40%of the carrier line. Determine the following quantities in the output signal:a-The modulation index.b-The peak amplitude of the lower sideband.c-The ratio of total sideband power to carrier power.d-The total output power.e-The total average power in thr output if the peak amplitude of the modulationsinusoid is reduced to 4 volt.
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