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A DSB-C AM system has a carrier frequency of 200 kHz with 3 volts amplitude. Let the message signal be a single sinusoid as follows m(t) = 2 × cos(20 × 10°nt)

A DSB-C AM system has a carrier frequency of 200 kHz with 3 volts amplitude. Let the message signal be a single sinusoid as follows m(t) = 2 × cos(20 × 10°nt)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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A DSB-C AM system has a carrier frequency of 200 kHz with 3 volts amplitude. Let the message signal be a single sinusoid as follows m(t) = 2 × cos(20 × 10°rt) If the modulation index is u = 0.2 at the transmitter and envelope tection is used at the receiver, answer the following: 1. Find the DSB-C transmitted signal in the time domain. s(t) = cos( x10° rt)+ cos( x10° rt)+ COS x10°t)
Transcribed Image Text:A DSB-C AM system has a carrier frequency of 200 kHz with 3 volts amplitude. Let the message signal be a single sinusoid as follows m(t) = 2 × cos(20 × 10°rt) If the modulation index is u = 0.2 at the transmitter and envelope tection is used at the receiver, answer the following: 1. Find the DSB-C transmitted signal in the time domain. s(t) = cos( x10° rt)+ cos( x10° rt)+ COS x10°t)
2. Find the transmission bandwidth. В - kHz Find the power efficiency = 3.
Transcribed Image Text:2. Find the transmission bandwidth. В - kHz Find the power efficiency = 3.
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