1. Define modulation. 2. Explain why modulation is necessary or desirable. 3. Define: a) The circuit that causes one signal to modulate another, and give the names of the two signals applied to this circuit. b) What is the name given to the new signals generated by the modulation process.
1. Define modulation. 2. Explain why modulation is necessary or desirable. 3. Define: a) The circuit that causes one signal to modulate another, and give the names of the two signals applied to this circuit. b) What is the name given to the new signals generated by the modulation process.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Transcribed Image Text:• Discussion:
1. Define modulation.
2. Explain why modulation is necessary or desirable.
3. Define:
a) The circuit that causes one signal to modulate another, and give the
names of the two signals applied to this circuit.
b) What is the name given to the new signals generated by the modulation
process.
4. Are these statements true or false. Explain your answer
a) The carrier frequency is usually lower than the modulating frequency.
b) The carrier frequency remains constant during AM.
c) The carrier of an AM signal contains information.
5. Explain why the modulation is linear in amplitude modulation system.
6. Explain the reason for making the modulation index (m) less than unity in
DSB_LC modulation.
7. What percentage of the total power in an AM signal is in the carrier,
one sideband, and both sidebands.
8. Write the trigonometric expression for a sine wave carrier signal.
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