Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
1. A square-law modulator for generating an AM wave relies on the use of a nonlinear device (e.g., diode); Figure depicts the simplest form of such a modulator. Diode (Nonlinear device) Message signal m(t) v(t) Load V½(t) Carrier wave A cos(2#f.t) Figure : Non linear circuit using a diode Ignoring higher order terms, the input-output characteristic of the diode-load resistor combination in the above figure is represented by the square law : v2(t) - ajvi(t) + azvi(t) Where vi(t) Ac cos(27ft) + m(t) is the input signal, v2(t) is the output signal developed across the load resistor, and ai and a2 are constants. (a) Determine the spectral content of the output signal v2(t). (Or) Find the Fourier Transform of V2(t). (b) To extract the desired AM wave from V2(t) , we need a band-pass filter in the Output of v2(t) ( which is not shown in Figure ). Determine the cutoff frequencies of the required filter, assuming that the message signal is limited to the band -W

1. A square-law modulator for generating an AM wave relies on the use of a nonlinear device (e.g., diode); Figure depicts the simplest form of such a modulator. Diode (Nonlinear device) Message signal m(t) v(t) Load V½(t) Carrier wave A cos(2#f.t) Figure : Non linear circuit using a diode Ignoring higher order terms, the input-output characteristic of the diode-load resistor combination in the above figure is represented by the square law : v2(t) - ajvi(t) + azvi(t) Where vi(t) Ac cos(27ft) + m(t) is the input signal, v2(t) is the output signal developed across the load resistor, and ai and a2 are constants. (a) Determine the spectral content of the output signal v2(t). (Or) Find the Fourier Transform of V2(t). (b) To extract the desired AM wave from V2(t) , we need a band-pass filter in the Output of v2(t) ( which is not shown in Figure ). Determine the cutoff frequencies of the required filter, assuming that the message signal is limited to the band -W

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...
See similar textbooks
icon
Related questions
Question
1. A square-law modulator for generating an AM wave relies on the use of a nonlinear device (e.g., diode); Figure depicts the simplest form of such a modulator. Diode (Nonlinear device) Message signal m(t) v1(t) Load v½(t) Carrier wave A, cos(2mf.t) Figure : Non linear circuit using a diode Ignoring higher order terms, the input-output characteristic of the diode-load resistor combination in the above figure is represented by the square law : v2(t) = a¡v1(t) + azvi(t) Where vi(t) = Ac cos(2nft) + m(t) is the input signal, v2(t) is the output signal developed across the load resistor, and ai and a2 are constants. (a) Determine the spectral content of the output signal V2(t) . (Or) Find the Fourier Transform of V2(t) . (b) To extract the desired AM wave from V2(t) , we need a band-pass filter in the Output of v2(t) ( which is not shown in Figure ). Determine the cutoff frequencies of the required filter, assuming that the message signal is limited to the band -W<f<W.
Transcribed Image Text:1. A square-law modulator for generating an AM wave relies on the use of a nonlinear device (e.g., diode); Figure depicts the simplest form of such a modulator. Diode (Nonlinear device) Message signal m(t) v1(t) Load v½(t) Carrier wave A, cos(2mf.t) Figure : Non linear circuit using a diode Ignoring higher order terms, the input-output characteristic of the diode-load resistor combination in the above figure is represented by the square law : v2(t) = a¡v1(t) + azvi(t) Where vi(t) = Ac cos(2nft) + m(t) is the input signal, v2(t) is the output signal developed across the load resistor, and ai and a2 are constants. (a) Determine the spectral content of the output signal V2(t) . (Or) Find the Fourier Transform of V2(t) . (b) To extract the desired AM wave from V2(t) , we need a band-pass filter in the Output of v2(t) ( which is not shown in Figure ). Determine the cutoff frequencies of the required filter, assuming that the message signal is limited to the band -W<f<W.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Frequency Modulation
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.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS