Electromagnetics and Applications

Lecture Notes

SES #

TOPICS

LECTURE NOTES

I. Maxwell's equations

L1

Coulomb-Lorentz force law; Maxwell's equations in integral form; simple electric and magnetic field solutions using Gauss' and Ampere's laws for point, line, and surface charges and currents; superposition; simple cylindrical and spherical source problems

Demos: H/M 10.2.1 - Edgerton's Boomer

(PDF)

L2

Derive boundary conditions; apply boundary conditions to surface charge and surface current problems

(PDF)

L3

Divergence and Stokes' theorems; Maxwell's equations in differential form; electroquasistatics and magnetoquasistatics (MQS); potential and the gradient operator

Demo: H/M 10.0.1 nonuniqueness of voltage in an MQS system

(PDF)

L4

The electric field, electric scalar potential, and the gradient; Poisson's and Laplace's equations; potential of point charge; Coulomb superposition integral

(PDF)

L5

Method of images

(PDF)

L6-L7

 

Lecture 6

Media: dielectric, conducting, and magnetic constitutive laws; charge relaxation

Demos: H/M 6.6.1 artificial dielectric; 9.4.1 measurement of B-H characteristic (magnetic hysteresis loop)

 

Lecture 7

Conservation of charge boundary condition; Maxwell capacitor; magnetic dipoles and circuits; reluctance

(PDF - 1.2 MB)

II. Plane waves

L8

Wave equation; Poynting's theorem

(PDF)

L9

Oblique incidence on a perfect conductor; transverse magnetic (TM) waves with oblique incidence on lossless media described by ε and µ; reflection and transmission; transverse electric (TE) waves with oblique incidence on lossless media

(PDF)

III. Transmission lines and waveguides

L10

Parallel plate transmission lines; wave equation; sinusoidal steady state

Demo: H/M 13.1.1 visualization of standing waves

(PDF)

L11

Gamma plane; Smith chart; voltage standing wave ratio (VSWR); λ/4 transformer

Demo: V(z,t), I(z,t) movies

(PDF - 2.6 MB)

L12-L13

 

Lecture 12

Wave equations (lossless); transient waves on transmission lines

Demo: H/M 14.4.1 transmission line matching, reflection, and quasistatic charging

 

Lecture 13

Reflections from ends; driven and initial value problems

(PDF - 2.5 MB)

L14

Rectangular waveguides; TM and TE modes; cut-off

(PDF)

IV. Fields and forces

L15

Dielectric waveguides

Demo: evanescent waves

(PDF)

L16-L17

 

Lecture 16

Energy in electric and magnetic fields; principle of virtual work to find electric and magnetic forces; magnetic circuit problems

Demo: H/M 11.6.2 force on a dielectric material (video)

 

Lecture 17

Synchronous rotating machines

Film: Synchronous Machines

(PDF)

L18

Self-excited electric and magnetic machines

Demo: H/M 7.7.1 van de Graaff and Kelvin generators (video); self-excited commutator machines

(PDF - 1.3 MB)

V. Antennas and radiation

L19

Radiation by charges and currents; setting the gauge; Lorentz gauge; superposition integral solutions for scalar and vector potentials; radiation from a point electric dipole; receiving antenna properties

(PDF)

L20

2 element array; broad side and end-fire arrays

Demo: radiation patterns

(PDF - 1.1 MB)

L21

Transmitting and receiving antennas; wireless and optical communications

(PDF - 1.5 MB)

VI. Acoustics

L22

Acoustic waves

(PDF - 2.5 MB)

L23

Course review

(PDF - 1.2 MB)

Assignments

ASSIGNMENTS

SOLUTIONS

Problem set 1 (PDF)

(PDF)

Problem set 2 (PDF)

(PDF)

Problem set 3 (PDF)

(PDF)

Problem set 4 (PDF)

(PDF)

Problem set 5 (PDF)

(PDF)

Problem set 6 (PDF)

(PDF)

Problem set 7 (PDF)

(PDF)

Problem set 8 (PDF)

(PDF)

Problem set 9 (PDF)

(PDF)

Problem set 10 (PDF)

(PDF)

Problem set 11 (PDF)

(PDF)

 

Exams

The table below provides the quizzes for the course. Students were allowed to use formula sheets, which were included in the exams.

EXAMS

SOLUTIONS

Quiz 1 (PDF)

(PDF)

Quiz 2 (PDF)

(PDF)

 

Study Materials

Formula Sheets

6.013 Formula Sheet 1 (PDF)

6.013 Formula Sheet 2 (PDF)

2005 Final Exam Formula Sheets (PDF)