2013-05-21

Finite-Element Simulation of Time-Harmonic Electromagnetic Fields

Prof. Dr. Romanus Dyczij-Edlinger, Universität des Saarlandes, Saarbrücken

27 May 2013, 16:15–17:45; Location: S2|17-103

A broad class of structures in electronics and high-frequency engineering exhibits linear time-invariant system properties. It ranges from antennas and filters through wiring structures of integrated circuits to the cavities of linear accelerators and the elementary cells of meta-materials. Such structures constitute distributed-parameter systems of high complexity, and their characterization usually requires numerical simulation methods at the level of electromagnetic fields.

This presentation gives an overview of typical modelling, solution, and post-processing techniques, based on the method of finite elements in the frequency domain. By reference to a model problem representative for high-frequency engineering, a radiating structure fed by inhomogeneous waveguides, I will review the modal characterization of waveguides, its usage in three-dimensional driven problems, the modelling of concentrated circuit elements and radiation effects, as well as far-fields computation techniques. Moreover, I will discuss the numerical properties of selected formulations and solution methods for large-scale systems of linear equations and algebraic eigenvalue problems. A few remarks on adaptive methods for error control as well as the treatment of parameter-dependent problems conclude the presentation.

Category: CE Seminar

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