course: Electromagnetic Waves
- number:
- 141372
- teaching methods:
- lecture with tutorials
- media:
- computer based presentation, black board and chalk
- responsible person:
- Prof. Dr. Ralf Peter Brinkmann
- Lecturers:
- Dr. Denis Eremin (ETIT), M. Sc. Michael Klute (ETIT)
- language:
- german
- HWS:
- 4
- CP:
- 5
- offered in:
- winter term
dates in winter term
- start: Tuesday the 27.10.2020
- lecture Tuesdays: from 10:15 to 11.45 o'clock in Online
- tutorial Thursdays: from 10:15 to 11.45 o'clock in Online
Exam
Die Angaben zu den Prüfungsmodalitäten (im WiSe 2020/2021 | SoSe 2021) erfolgen vorbehaltlich der aktuellen Situation. Notwendige Änderungen aufgrund universitärer Vorgaben werden zeitnah bekanntgegeben.
Date according to prior agreement with lecturer.
Form of exam: | oral |
Registration for exam: | FlexNow |
Duration: | 30min |
goals
The students learn the theory of electromagnetic waves and can solve problems in the field of high frequency technology, photonics or plasma technology.
content
- A. Electrostatics *
- Revisit of Coulomb's law, Poisson's equation and Gauss's law; Interpretation by means of the Helmholtz decomposition theorem for vector fields
- Green's theorem, formal solution of the Poisson equation with help of the Green's function
- The Laplace equation in Cartesian and spherical coordinates and spherical functions; Green's function in spherical coordinates, multipole expansion
- B. Magnetostatics *
- Biot-Savart's law and Ampere's law; Continuity equation, vector potential and gauge transformations
- Faraday's induction law
- C. Electrodynamics (basics) *
- The Maxwell equations: displacement current, continuity equation; Electrodynamic potentials, gauge transformation by means of scalar calibration
- The Coulomb and Lorenz calibrations, scalar wave equation
- Green's function of the wave equation, retarded potentials
- d'Alembert solutions of the wave equation
- Conservation equations: charge, momentum and angular momentum conservation, Poynting's theorem
- Transition conditions at media boundaries and plane waves in non-conductive media; Conductive media and inhomogeneous plane waves
- D. Electrodynamics *
- Polarization of electromagnetic waves, Stokes parameters
- Revisit of the superposition principle for EM waves, phase / group velocity; Wave packets and propagation in dispersive media
- Revisit of oscillation types in waveguides; Cylindrical hollow / waveguide
- Radiation of localized oscillating sources, near and far field approximations
requirements
keine
recommended knowledge
Contents of the Bachelor Lectures (PO 13) Mathematics 1, 2 and 3 as well as General Electrical Engineering 1, 2, 3 and 4
materials
tutorials:
literature
- Panofsky, Wolfgang K. H., Phillips, Melba "Classical Electricity and Magnetism", Dover Publications Inc., 2005
- Heald, Mark A., Marion, Jerry B. "Classical Electromagnetic Radiation", Dover Publications Inc., 1995
- Griffiths, D.J. "Introduction to Electrodynamics", Prentice Hall, 1999
- Jackson, John David "Klassische Elektrodynamik", Gruyter, Walter de GmbH, 1988
- Zangwill, A. "Modern Electrodynamics", Cambridge University Press, 2013
miscellaneous
Lectures will be held on Zoom each Tuesday starting at 10:15,
https://us02web.zoom.us/j/83966496942?pwd=aFFyRDBBc2F4Nm1JNExYNUtKV3RpZz09
Meeting ID: 839 6649 6942 Passcode: PysJD7
The moodle course for this class can be found on https://moodle.ruhr-uni-bochum.de/m/course/view.php?id=33545