W. H. A. Schilders

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Designers of electric circuits are often interested in the behaviour of the designed circuits after turn-on effects have damped out. The traditional way to compute this long-term behaviour is by simulating the electric circuit over a large time interval. However, when the turn-on effects damp out slowly, the computational costs may become prohibitive. Many(More)
This paper describes a locally one-dimensional finite-difference time domain method for the two-dimensional time-dependent simulation of semiconductor devices. This approach leads to significant reduction of the semiconductor simulation time. We can reach over 80% reduction in the simulation time by using this technique while maintaining the same degree of(More)
• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the(More)
In recent years, several discretisation methods extending the classical Scharfetter-Gummel scheme to non-rectangular meshes have been described. Such methods can, for example, be found in Markovich ([6]), Polak et al. ([10], [11], [121]), Van Welij ([14]) and Zlamal ([15]). We have used Van Welij's edge elements to design a box method which can cope with(More)
The fields scattered by dielectric objects placed inside metallic waveguides can efficiently be computed via a finite-difference frequency-domain (FDFD) method. This involves large, sparse linear systems of equations that may be solved using preconditioned Krylov-subspace methods. We propose a preconditioner that uses fast discrete trigonometric transforms(More)
SUMMARY In the design and fabrication of micro-electronic circuits, it is necessary to simulate and predict many kinds of effects, such as substrate crosstalk, interconnect delays and others. In order to simulate and predict properly these effects, accurate and efficient substrate modeling methods are required. Substrate resistance extraction involves(More)
  • K C A M Luyben, Ir A Segal, +8 authors Samenvatting Het
  • 2010
This thesis has been completed in partial fulfillment of the requirements of Delft University of Technology (Delft, The Netherlands) for the award of the Ph.D. degree. Cover: A numerical solution of 2D driven cavity flow Stokes problem on 132 × 132 Q2-Q1 FEM grid. Summary Efficient numerical solution of the incompressible Navier-Stokes equations is a hot(More)
In this paper, popular model reduction techniques from the fields of structural dynamics, numerical mathematics and systems and control are reviewed and compared. The motivation for such a comparison stems from the fact the model reduction techniques in these fields have been developed fairly independently. In addition, the insight obtained by the(More)
a NXP Semiconductors, Central R&D, FT/Physical Design Methods/Mathematics, High Tech Campus 46, 5656 AE Eindhoven, the Netherlands; {Joost.Rommes,Jan.ter.Maten, Wil.Schilders}@nxp.com. b Koninklijk Nederlands Meteorologisch Instituut, Wilhelminalaan 10, 3732 GK De Bilt, the Netherlands; Davit.Harutyunyan@knmi.nl. c Bergische Universität Wuppertal,(More)
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