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Swayam Central

Transmission lines and electromagnetic waves

By Prof. Ananth Krishnan   |   IIT Madras
Bridge course to practical aspects of engineering electromagnetics for entering Graduate students and senior undergraduate students. The course will involve hands on programming to visualize most aspects of electromagnetics and transmission lines.

INTENDED A
UDIENCE : M.Tech. 1st years and B.Tech. 3rd or 4th years
PREREQ
UISITES : Nil
INDUSTRY
SUPPORT : BEL, ISRO, Comsol, HFSS

Learners enrolled: 976

SUMMARY

Course Status : Upcoming
Course Type : Core
Duration : 12 weeks
Start Date : 27 Jan 2020
End Date : 17 Apr 2020
Exam Date : 26 Apr 2020
Enrollment Ends : 03 Feb 2020
Category :
  • Electrical, Electronics and Communications Engineering
  • Level : Postgraduate
    This is an AICTE approved FDP course

    COURSE LAYOUT

    Week 1 : Circuit model of a lossless transmission line
    a) Introducing space coordinate in circuit diagram
    b) The notion of delay in a lossless interconnect
    c) LC ladder equivalent
    d) The spatial derivative in equations for V and I
    e) Telegraphers equations
    f) Decoupling to wave equation
    g) Meaning of the analytical solution to wave equation - The existence of voltage and current waves
    Week 2 : Programmatic approach to solving partial differential equations - Finite differences
    a) Taylor’s series approximation to first and second derivatives
    b) Partial derivatives
    c) Octave/Matlab based solution to voltage in a capacitor (Laplace solver)
    d) Meaning of Dirichlet and Neumann boundary conditions and the voltage in parallel plate capacitor
    e) Octave/Matlab to solve wave equation
    f) Octave/Matlab to solve Telegrapher’s equations
    g) Implication of short circuit or open circuit in a transmission line
    h) The reflection coefficient
    i) Time domain reflectometry
    j) Time of flight based inferences
    k) Bounce diagrams and time evolution of voltage
    Week 3 : Non-idealities in the transmission line circuit model
    a) Resistor and conductor in circuit equivalent
    b) Steady state AC in transmission line
    c) The propagation constant and characteristic impedance
    d) Impedance in the transmission line
    e) Standing Wave and Voltage Standing Wave Ratio
    f) Power in transmission line
    Week 4 : Impedance matching
    a) Quarter wavelength transformer
    b) Stub based matching
    Week 5 : Equivalence of Maxwell’s equations and telegraphers equations
    Week 6 : Programmatic solutions to Maxwell’s equations using Octave/Matlab
    Week 7 : Power and Poynting vector
    Week 8 : Losses in propagation and propagation constant, Polarization (the only difference from transmission lines)
    a) Linear, circular, elliptical
    Week 9 : Reflection and transmission at interfaces (analogous to transmission lines)
    a) Reflection coefficient and transmission coefficient
    b) Standing waves
    Effect of reflection and transmission on Polarization (different from transmission lines)
    Week 10 : Dielectric-Dielectric and Dielectric-Metal interfaces, Fresnel coefficients,Brewsters angle,Total internal reflection
    Week 11 : Parallel plate and rectangular waveguides, Modes of parallel plate and rectangular waveguides
    Week 12 : The cut-off frequency, Dispersion

    BOOKS AND REFERENCES

    R.K. Shevgaonkar, Electromagnetic waves

    INSTRUCTOR BIO

    Prof. Ananth Krishnan

    IIT Madras
    Ananth Krishnan is a faculty member at the department of electrical engineering in IIT-Madras. His specialization is Photonics and specifically Plasmonics

    COURSE CERTIFICATE

    • The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
    • The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
    Date and Time of Exams: 26th April 2020, Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
    • Registration url: Announcements will be made when the registration form is open for registrations.
    • The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
    • Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

    CRITERIA TO GET A CERTIFICATE:
    • Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
    • Exam score = 75% of the proctored certification exam score out of 100
    • Final score = Average assignment score + Exam score

    YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75.
    • If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.
    • Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras. It will be e-verifiable at nptel.ac.in/noc.
    • Only the e-certificate will be made available. Hard copies will not be dispatched.

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