ElectricAndMagneticFields

 

Electric and Magnetic Fields/Fall 2014

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Topics for the Final Exam Preparation (December 15, 10:30AM to 12:30PM) I. Electrostatics (Notes, and Chapter 4 – F.Ulaby’s textbook)

 Electric fields calculation (E and D, direction and magnitude) produced by charge distributions, Gauss’s law

 Electric potential calculation due to charge distributions  Capacitance, electrostatic potential energy

 

II. Magnetostatics (Notes, and Chapter 5 – Ulaby’s textbook)

 Magnetic forces on current-carrying conductors  Magnetic fields calculation (H and B, direction and magnitude), Ampere’s law  Inductance, magnetic energy

 

III. Dynamic Electromagnetic Fields (Notes, and Chapter 6 – Ulaby’s textbook)

 Magnetic flux and induced voltage (emf) calculation, Faraday’s law, for the cases: (1) stationary loop in time-varying magnetic field (transformer emf), (2) moving conductor in static magnetic

field (motional emf), moving conductor in time-varying magnetic field (electromagnetic generator

case)

 Displacement current included in Ampere’s law

 

IV. Plane-Wave Propagation (Notes, and Chapter 7 – Ulaby’s textbook)

 Time-harmonic (sinusoidal) fields in phasor domain representation, and the concepts of: amplitude, time period and frequency, spatial (period) wavelength, phase of the wave, phase

constant (wavenumber), phase (propagation) velocity, complex permittivity, propagation constant

 Uniform plane wave propagation in lossless media, intrinsic impedance of a lossless medium, transverse electromagnetic (TEM) wave, phase velocity, intrinsic impedance of free space,

general relation between E and H

 Plane wave propagation in lossy media, attenuation constant, phase constant, intrinsic impedance of a lossy medium, skin depth (depth of penetration) of the medium

 Current flow in good conductors, surface impedance, resistance (coaxial cable application)  Electromagnetic power density, Poynting vector (S), average power density of the wave (Sav)

 

V. Transmission Lines (Notes, and Chapter 8 – Ulaby’s textbook)

 Transmission line (TL) parameters (lumped element circuit representation, R ‘ , L

‘ , G

‘ , C

‘ ) per unit

length, application for coaxial cable and parallel plate (Table 8-1, textbook), relations between TL

parameters and material properties ( )  TL equations (telegrapher’s equations), and the concepts of: attenuation constant, phase constant,

characteristic impedance (Z0)

 Lossless TL specific concepts of: attenuation constant, phase constant, characteristic impedance

(Z0), wavelength, phase velocity, voltage reflection coefficient ( ), load impedance (ZL), voltage standing-wave ratio, input impedance (Zin(z)), special cases of lossless TL: short-circuited line,

open-circuited line, matched transmission line (ZL = Z0), power flow on lossless TL

 

Extracredit (facultative):

VI. Impact of engineering solutions in a global, economic, environmental, and societal context

( Summarize one article from literature search)

 

 

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