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H.W: Repeat the previous example assuming that the modulating signal is given by: S(1) = {" St - 1, 0, 0

H.W: Repeat the previous example assuming that the modulating signal is given by: S(1) = {" St - 1, 0, 0

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Ex 4-3: A transmitter transmits an AM/DSB single tone-modulating signal given by 3 cos(2n10°t) volt with a carrier signal given by 10 cos(2r 10t) volt Find: 1- Modulation depth. 2- USB & LSB frequencies. 3- Amplitude of sideband frequencies. 4- Efficiency of Transmission. Solution: A=3 v, A=10 v f=10° Hz, f=10° Hz 1- D = Am x 100% = - x 100% = 30% 10 2- USB frequency is fe + fm = 106 + 103 = 1.001 MHz , LSB frequency is fe- fm = 106 – 103 0.999 MHz 3- Amp. of USB & LSB is mA 0.3x10 0.75 volt m2 0.32 4- n = m2 +2 0.32+2 4.3 % H.W: Repeat the previous example assuming that the modulating signal is given by: 0<t<2+ 10-3 2 + 10-3 <t< 4 + 10-3 t- 1, 0, Assume that the signal is band-limited to I kHz.
Transcribed Image Text:Ex 4-3: A transmitter transmits an AM/DSB single tone-modulating signal given by 3 cos(2n10°t) volt with a carrier signal given by 10 cos(2r 10t) volt Find: 1- Modulation depth. 2- USB & LSB frequencies. 3- Amplitude of sideband frequencies. 4- Efficiency of Transmission. Solution: A=3 v, A=10 v f=10° Hz, f=10° Hz 1- D = Am x 100% = - x 100% = 30% 10 2- USB frequency is fe + fm = 106 + 103 = 1.001 MHz , LSB frequency is fe- fm = 106 – 103 0.999 MHz 3- Amp. of USB & LSB is mA 0.3x10 0.75 volt m2 0.32 4- n = m2 +2 0.32+2 4.3 % H.W: Repeat the previous example assuming that the modulating signal is given by: 0<t<2+ 10-3 2 + 10-3 <t< 4 + 10-3 t- 1, 0, Assume that the signal is band-limited to I kHz.
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