We want to transmit a signal m(t) composed of three frequencies: 440 Hz with an amplitude of 1 volt, 560 Hz with an amplitude of 2 volts and 680 Hz with an amplitude of 1 volt. This is the information signal. This signal will be modulated around a carrier to be transmitted via an antenna. Wave length 30 cm. 1. Write the mathematical temporal equation of the modulating signal. 2. Represent by a figure the spectrum of the modulating signal 3. Calculate the carrier frequency suitable for the antenna.
We want to transmit a signal m(t) composed of three frequencies: 440 Hz with an amplitude of 1 volt, 560 Hz with an amplitude of 2 volts and 680 Hz with an amplitude of 1 volt. This is the information signal. This signal will be modulated around a carrier to be transmitted via an antenna. Wave length 30 cm. 1. Write the mathematical temporal equation of the modulating signal. 2. Represent by a figure the spectrum of the modulating signal 3. Calculate the carrier frequency suitable for the antenna.
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...
Related questions
Question
Communication system
Transcribed Image Text:We want to transmit a signal m(t) composed of three frequencies: 440 Hz with an amplitude
of 1 volt, 560 Hz with an amplitude of 2 volts and 680 Hz with an amplitude of 1 volt. This is
the information signal.
This signal will be modulated around a carrier to be transmitted via an antenna. Wave length
30 cm.
1. Write the mathematical temporal equation of the modulating signal.
2. Represent by a figure the spectrum of the modulating signal
3. Calculate the carrier frequency suitable for the antenna.
4. We will assume that the carrier frequency is fp. The carrier is written:
v(t) Vp sin( 2 π fpt).
Write the mathematical temporal equation of the signal module (we will give the expanded
mathematical expression of s(t), signal module).
5. Plot the spectrum of the module signal.
6. Calculate the power in Watt of the signal (we will assume k=1). We will take Vp =3.
7. Calculate the power in dB.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 6 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,