ELL212/EEL207 Engineering Electromagnetics (2015-16 Semester II), Instructor: Uday Khankhoje
Lectures: Tu We Fr, 10-10.50a (Slot E), III LT - 2. Tutorials: Tu-Fr, 1-2p, IIA (Bharti) 106.
Office hours: We 3-3:45p, II-402B (walk in). For other times, see this (go to step 2).

News
  1. Major on 06 May 2016 in LHC-108 from 3:30-5:30pm. Closed notes; two sided hand-written (no xerox) A4 cheat sheet allowed.
  2. No tutorials in the week of 11 April.
  3. Upcoming: Poster submission via Turnitin on 8am 13 April [Hard deadline].
  4. Upcoming: Poster day abstract submission via Turnitin on 03 April.
  5. No tutorials for the week of 28th March.
  6. Minor-2 on 22 March 2016 in LHC-108, 1-2pm covering all material till 16 Mar (except transmission lines). Closed notes; one sided hand-written A4 cheat sheet allowed.
  7. Tutorials for Week of 14 Mar will be held on Mon/Tue/Thu.
  8. Extended class on 16 Mar (Wed), 10-11:50p in usual room. No class on 18 Mar (Fri).
  9. No class on 19 Feb (Friday) due to final year project evaluations.
  10. Minor-1 on 13 Feb 2016 in LHC-108, 1-2pm covering all material till 09 Feb. Closed notes; one sided hand-written A4 cheat sheet allowed (this table (grad,div,curl in cylindrical and spherical coordinates) will be provided to you in the exam paper). See contributed questions here.
  11. No tutorials for the week of 8 Feb 2016.
  12. In class quiz on 22 Jan 2016 covering all material till 20 Jan. Closed notes; one sided hand-written A4 cheat sheet allowed; can answer in groups of two if desired.
  13. Tutorials will start from the week of 11th Jan 2016. Make sure you are organized into 4 groups, one each on Mo, Tu, Th, Fr. Attendance will be recorded in the tutorial, and you are expected to stick to the same day throughout the semester.
Resources
  1. Feynman's lectures on physics.
  2. MIT notes on visualizing electromagnetics.
  3. CD accompanying Ulaby's book, which has some Java based simulations, sample problems, and the book figures/tables.
  4. Recommended web-material: Prof. R K Shevgaonkar's NPTEL video lectures, and Prof. Cynthia Furse's course on electromagnetism.
Evaluations and Tutorials

Component *Quiz-1 * Minor-1 * Minor-2 Poster-day *Major Attendance+
Weightage 9% 18% 18% 20% 30% 5%
Statistics a:66%,u:70%,s:17%
M/m:91/7(%),T:20 		a:41%,u:43%,s:14%
M/m:73/5(%),T:22 		a:51%,u:52%,s:20%
M/m:90/7(%),T:21 		a:66%,u:70%,s:12%,
M/m:83/5(%),T:20 		_ a:56%,M:100%,T:5
[*=graded relatively, a=Average, u=median, s=Standard deviation, M=Maxmimum, m=Minimum, T=Total marks, += Computed as (p.a.-75)/25*5 (p.a=percentage attendance (if greater than 75)).]
Pearson correlation coefficient between attendance and total class performance: 0.67 (high)

Tutorial # 1, Soln 2, Soln 3, Soln 4, Soln 5, Soln 6, Soln 7, Soln 8, Soln 9, Soln
Week of: 11 Jan 18 Jan 25 Jan 01 Feb 22 Feb 07 Mar 14 Mar 04 Apr 18 Apr
[TAs: Yaswanth Kalepu, Rahul Trivedi, Anurika Goel. Tutorials on three days out of Mon/Tue/Thu/Fri.]

Lecture Topics
  1. Electromagnetics: relevance and motivations. Also read this paper by Taflove. Class slides (including course FAQ). (Lecture 1 05.01.16)
  2. Travelling waves, wave equation, phasor review. Ch.1 of Ulaby, YouTube videoes by Prof. Furse:1,2,3. (Lecture 2 06.01.16)
  3. Transmission Lines (TL):
    • Introduction and derivation of TL equations. Ch.2.1-2.4 of Ulaby, slides, YouTube: intro,TL?,effects,RLGC model: 1,2. Additional notes. (Lecture 3 08.01.16)
    • TL equations: propagation constant, reflection coefficients, matched/open/shorted circuit conditions, VSWR. Ch 2.6 of Ulaby. Run the TL simulator, module 2.4 here. YouTube videos: Prop. const,lossless TL,reflections,ref. coeff.,standing waves,max/min,max/min(more). (Lecture 4 12.01.16)
    • TL : slotted line for measuring unknown impedance, wave impedance. Ch 2.7-2.8 of Ulaby. Run the wave impedance simulator, module 2.5 here. YouTube: impedance 1,2,3,4,example. (Lecture 5 13.01.16)
    • TL : special cases, power flow. Ch 2.7-2.9 of Ulaby. Run the wave impedance simulator, module 2.5 here. YouTube: impedance 1,2,3,4,example. (Lecture 6 15.01.16)
  4. Review of vector calculus (additional notes):
    • Vector algebra, coordinate systems, gradient of a scalar field, divergence of a vector field. Ch 3.1-3.5 of Ulaby. Youtube: 1,2,3,4,5,6,7,8,9. (Lecture 7 19.01.16)
    • Divergence theorem, curl of a vector field, Stokes theorem, a few important results: connectivity of regions for area integrals, physical interpretation of gradient. Ch 3.5-3.7 of Ulaby, notes on the gradient: 1,2, notes on various identities: wiki, integrals, Youtube videos here. (Lecture 8 20.01.16)
      •      <=== Quiz ===>
  5. Statics:
    • Electrostatics: Gauss's law stated in Ch 4.1-4.4 of Ulaby and derived in Ch 2.1, 2.2 of Griffiths; electric potential: Ch 4.5 of Ulaby and Ch 2.3 of Griffiths. Youtube: 1,2,3,4,5,6,7,8,9,10,11,12 (Lecture 9 27.01.16)
    • Electric fields in dielectric materials: stated in Ch 4.7 of Ulaby, derived in Ch 4.1.1, 4.1.2, 4.1.4, 4.2.1, 4.2.2, 4.3.1 of Griffiths (refer to videos in previous lecture, also, this). (Lecture 10 29.01.16)
    • Polarizability of a material: Ch 4.7 of Ulaby, Ch 4.1.1,4.1.2,4.1.4,4.2.1,4.2.2,4.3.1 of Griffiths; classification of media (linear/non-linear, isotropic/anisotropic, homogeneous/heterogeneous): Ch 4.4.1 of Griffiths; boundary conditions on field components: Ch 4.8 of Ulaby, Ch 2.3.5,4.3.3 of Griffiths; electric fields in conductors: Ch 4.6 of Ulaby, Ch 2.5 of Griffiths.(Lecture 11 02.02.16)
    • Magnetostatics: Lorentz force, Ampere's law, and magnetic vector potential: Ch 5.1,5.2,5.3,5.4 of Ulaby, Ch 5.1,5.2,5.3,5.4.1 of Griffiths; magnetic fields in materials and types of magnetic materials (paramagnetic, diamagnetic, ferromagnetic): Ch 5.5 of Ulaby, Ch 6 of Griffiths. (Lecture 12,13 03.02.16, 05.02.16)
  6. Electrodynamics
    • Currents in conductors, Drude model. See Ch 7.1 of Griffiths, Ch 6.1 of Ulaby. Additional notes on Drude model. (Lecture 14 09.02.16)
      •      <=== Minor 1 ===>
    • Electromotive force, Motional EMF. See Ch 7.1 of Griffiths, and notes on induced EMF. (Lecture 15 16.02.16)
    • Faraday's law: Ch 6.1,6.2,6.4,6.6 of Ulaby, Ch 7.2.1,7.2.2 of Griffiths, Maxwell's equations: Ch 6.7 of Ulaby, Ch 7.3.1,7.3.2,7.3.3 of Griffiths (note that Ulaby only states, whereas Griffiths derives!). (Lecture 16 17.02.16)
    • Maxwell's equations in matter: bound and polarization currents. See Ch 7.3.5 of Griffiths. Please refer to tutorial 5, problem 2 for a derivation of boundary conditions or Ch 7.3.6 of Griffiths. (Lecture 17 23.02.16)
    • Conservation laws: continuity equation and Poynting theorem, EM waves in vacuum. See Ch 8.1 of Griffiths. Notes on EM radiation and health effects. (Lecture 18 24.02.16)
  7. Electromagnetic (EM) waves
    • Monochromatic plane waves: fields, energy densities, Poynting vector. See Ch 9.2.2, 9.2.3 of Griffiths. (Lecture 19 26.02.16)
    • Plane waves and their interaction with different media; use in microwave remote sensing (overview). (Lecture 20 11.03.16)
    • Wave polarization: linear, circular, elliptical. See Ch 7.3 of Ulaby. (Lecture 21 15.03.16)
    • EM wave propagation in a conducting medium, notion of skin depth: Ch 9.4.1 of Griffiths; EM waves at the interface between a conducting and non-conducting medium: Ch 9.4.2 of Griffiths. (Lecture 22[extended] 16.03.16)
      •      <=== Minor 2 ===>
    • EM waves at the interface between two non-conducting mediums (oblique incidence): Ch 9.3.3 of Griffiths. Additional info on: ray/geometrical/physical optics: (URL1, URL2), anti-reflective coatings: (URL1, URL2). (Lecture 23 28.03.16, Lecture 24 29.03.16)
    • Guided waves: TE modes in a metallic waveguide, group and phase velocities: Ch 9.5.2 of Griffiths, 8.9,8.10 of Ulaby, java simulator for waveguide modes. (Lecture 25 01.04.16, Lecture 26 05.04.16)
  8. Special topics
    • On the connections between Maxwell's equations and modern physics. Special lecture by Dr. Kushal Shah (EE). (Lecture 27 06.04.16)
    • Electromagnetic resonators, fiber gratings and lasers, erbium doped fiber amplifiers (URL). Ch 8.11 of Ulaby, more info on basic laser physics (URL), lecture slides. (Lecture 28 08.04.16, Lecture 29 12.04.16)
    • Frequency dependence of refractive index (or why does the rainbow seem the way it does). See this for more on the damped harmonic oscillator, this for an exposition on rainbows, and refer to Ch 9.4.3 of Griffiths for a quantitative treatment. (Lecture 30 13.04.16)
    • Introduction to Antennas: the Hertz dipole. Derivation of near and far-fields and Poynting vector (Ch 9.1 of Ulaby). Also see the Hertz dipole simulator to visualize fields. (Lecture 31 18.04.16)
    • Characterizing antennas: radiation patterns, beamwidth, directivity. Introduction to antenna arrays (also this). Ch 9.2, 9.9 of Ulaby. (Lecture 32 22.04.16)
    • Introduction to photonic crystals and related devices (Slides). See the tutorial slides (and other material) by the ab initio group at MIT here, and also refer to the (free) textbook here. (Lecture 33 26.04.16)
    • Introduction to computational methods: finite-difference time-domain (FDTD). See the 1D method from Ch. 3 here (upto 3.3), the open-source software meep (trivial to install on Ubuntu), and a general overview of the 3D method here. (Lecture 34 27.04.16)
    • Introduction to integral equation methods for scattering problems. See instructor note here. (Lecture 35 29.04.16)

Electromagnetics Poster Day (flyer)
Date: 15 Apr 2016, 2-6pm, Exhibition hall area, IIT Delhi
Coordinator: Vaibhav Garg
Current groups and projects: Read-only.

Themes Proposal Poster
Electromagnetics in: (1)Natural phenomena, or (2) Research, or (3)Industry. [Pick one] (1) Group members and title, due: 11:59pm 15 Mar on shared spreadsheet.
(2) Next, describe in one page: problem statement, proposed work. Use this Latex template + classfile or copy the template in a document here. Due: 11:59pm 03 Apr, via Turnitin.		 Prepare poster using Inkscape or Scribus using this Scribus template (sample poster, and helpful tips: 1, 2, 3). Due date: 8am 13 Apr, to coordinator (PDF, filename: PXX, where XX is group number) and to Turnitin.

Frequently given answers
  1. Each group of three students will present a single poster and optionally, a demo. From the given themes, you can pick any topic of your interest (must be approved by the instructor, though) and create a sufficiently well developed poster and presentation about the topic. The level of presentation should be much more than the average level of a Wikipedia article on the topic.
  2. You must use Latex to write your proposal. See this for more info.
  3. There will be a viva during your poster presentation, conducted by various faculty members, TAs/PhD students.
  4. Ideas? Feynman Lectures on Physics, popular articles at the IEEE Antennas and Propagation magazine, or the Technology Briefs in Ulaby's book, TED talks.

Course flyer
  • Main texts: Introduction to Electrodynamics Griffiths, Pearson 4th ed.; Fundamentals of Applied Electromagnetics Ulaby, Michielssen, Ravaioli, Pearson 6th ed.; Recommended texts: Electromagnetic Waves Shevgaonkar, McGraw-Hill; Elements of Electromagnetics Sadiku, Oxford 5th ed;
  • Topics (broad outline) : Travelling waves, transmission lines, review of vector calculus, electrostatics, electrodynamics, electromagnetic waves, guided waves, additional topics: antennas, photonic crystals, computational electromagnetics, optical fibres, remote sensing (time permitting).

Policies
  • As per institute rules, 75% attendance (minimum) is mandatory and will be enforced.
  • All emails to the instructor or TAs must have ELL212 in the subject line.
  • Collaboration policy: For the purpose of assignments and projects, students are free to: Look up any reference texts or Internet resources, use any computational software (Mathematica/MATLAB), and discuss with faculty or fellow students. However, the assignments turned in must be entirely original. Strictly off limits are: Looking at the final work of a fellow student, or the solution manuals of any reference text, or past assignment/examination material of any courses.
  • Academic misconduct: There will be zero tolerance towards any unethical means, such as plagiarism (COPYING in plain and simple terms). Read these links to familiarize yourself, there will be no excuse for ignorance: URL1, URL2. Penalties incude: receiving a zero in a particular assignment/examination, receiving a fail grade for the entire course, having a note placed in your permanent academic record, suspension, or all of the above. All electronic submissions will be via a plagiarism detection software, TurnItIn. Details will be discussed in class.

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