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A Simplified Conformal (SC) Method for Modeling Curved Boundaries in FDTD Without Time Step Reduction

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3 Author(s)
Schuhmann, R. ; Fachgebiet Theor. Elektrotechnik, Univ. Paderborn ; Zagorodnov, I.A. ; Weiland, T.

A simplified conformal (SQ) approach for the FDTD method is introduced. Unlike previous methods it allows the accurate modeling of arbitrary interfaces in a Cartesian mesh without the need to reduce the maximum stable time step, and without the usage of extended operator stencils. SC is directly based on the correspondence between modified cells and the Courant time step, and can be easily implemented in existing conformal codes. The method is verified and compared to other approaches by means of several numerical examples

Published in:

Microwave Symposium Digest, 2006. IEEE MTT-S International

Date of Conference:

11-16 June 2006