Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/53994
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Type: | Conference paper |
Title: | Modeling of dielectric material interfaces for the radial point interpolation time-domain method |
Author: | Kaufmann, T. Merz, T. Fumeaux, C. Vahldieck, R. |
Citation: | Proceedings of 2009 IEEE MTT-S International Microwave Symposium Digest, 2009;. pp.245-248 |
Publisher: | IEEE |
Publisher Place: | USA |
Issue Date: | 2009 |
Series/Report no.: | IEEE MTT-S International Microwave Symposium |
ISBN: | 9781424428038 |
ISSN: | 0149-645X |
Conference Name: | IEEE MTT-S International Microwave Symposium Digest (2009 : Boston, MA, USA) |
Statement of Responsibility: | Thomas Kaufmann, Thomas Merz, Christophe Fumeaux and Rudiger Vahldieck |
Abstract: | The Radial Point Interpolation Time-Domain (RPITD) method is a flavor of meshless domain discretization methods applicable to computational electromagnetics. Meshless methods do not require an explicit mesh topology, but rather rely on a representation of a physical model as a node distribution. This is firstly advantageous for modeling of conformal boundaries and multi-scale geometries. But as the most attractive feature, the node arrangements can be adapted on-the-fly. The RPITD method is based on interpolation of the field distribution using radial and monomial basis functions. This paper introduces a technique to model arbitrarily shaped dielectric interfaces in the framework of meshless methods. Using the proposed technique, errors associated to the interpolation of non-smooth fields at material interfaces are reduced, as demonstrated for 2D-TE modes. This allows for accurate modeling of interfaces with dielectric contrast. Unlike previous publications which modify the basis functions at interfaces, a physically motivated correction term is introduced here. Errors in the vicinity of material interfaces decrease significantly and simulation accuracy is generally improved. |
Description: | Copyright © 2009 IEEE |
DOI: | 10.1109/MWSYM.2009.5165679 |
Published version: | http://dx.doi.org/10.1109/mwsym.2009.5165679 |
Appears in Collections: | Aurora harvest 5 Electrical and Electronic Engineering publications |
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