Comparison of FETD and FDTD to Simulate Micro-strip Struc-tures on PCBs

Conference: CEM 2006 - 6th International Conference on Computational Electromagnetics
04/04/2006 - 04/06/2006 at Aachen, Germany

Proceedings: CEM 2006

Pages: 2Language: englishTyp: PDF

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Hollaus, Karl; Bíró, Oszkár; Matzenauer, Gernot; Preis, Kurt; Stockreiter, Christian; Weiß, Bernhard (Institute for Fundamentals and Theory in Electrical Engineering, IGTE, Graz University of Technology, Kopernikusgasse 24, 8020 Graz, Austria)
Caldera, Peter; Paoli, Gerhard (Infineon Technologies, Microelectronic Design Centers, Austria GmbH, Siemensstrasse 2, 9500 Villach, Austria)

The aim of this paper has been to investigate the numerical effort to simulate the electromagnetic field of simple structures on printed circuit boards (PCB) fast and accurately by the finite difference time domain (FDTD) and by the finite element time domain (FETD) method. In case of FDTD an approximate solution of the unknown electromagnetic field is determined with the aid of Yee-cells and by applying the “leapfrog scheme” in an explicit time stepping procedure. For FETD edge and nodal finite elements of second order are employed to approximate the magnetic vector potential A and the electric scalar potential V, respectively. A preconditioned conjugate gradient method is used to solve the algebraic system of equations. A micro-strip structure has been studied between 100MHz and 1GHz. Simulations and measurement data are presented and the numerical effort is discussed.