A Tilted Subgrid for Two Dimensional FDTD

Christopher J Railton

A Tilted Subgrid for Two Dimensional FDTD

Christopher J Railton

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

2 Citations (Scopus)

33 Downloads (Pure)

Abstract

Although the Finite Difference Time Domain (FDTD) method is well established for addressing a wide variety problems including the characterization of antenna arrays, a long standing challenge is to reduce discretization errors while
avoiding the use of impractically large numbers of cells, particularly when the structure is large and contains regions of fine detail. One solution is to use subgrids. In most published work, Cartesian subgrids are proposed which are in the same orientation as the main grid. However there is considerable benefit to allowing for the subgrid to be tilted. In this work, a method for introducing a tilted subgrid into the 2D FDTD mesh is presented and its effectiveness, accuracy and stability is demonstrated using examples. The method is readily extendable to a full 3D implementation.

Original language	English
Title of host publication	2015 9th European Conference on Antennas and Propagation (EuCAP 2015)
Subtitle of host publication	Proceedings of a meeting held 13-17 April 2015, Lisbon, Portugal
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1-5
Number of pages	5
ISBN (Print)	9781479970513
Publication status	Published - Nov 2015
Event	9th European Conference on Antennas and Propagation, EuCAP 2015 - Lisbon, Portugal Duration: 12 Apr 2015 → 17 Apr 2015

Publication series

Name	Proceedings of the European Conference on Antennas and Propagation
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
ISSN (Print)	2164-3342

Conference

Conference	9th European Conference on Antennas and Propagation, EuCAP 2015
Country	Portugal
City	Lisbon
Period	12/04/15 → 17/04/15

Keywords

FDTD methods
subgridding

Access to Document

Full-text PDF (accepted author manuscript)
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Accepted author manuscript, 1.11 MB

http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7228425

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Cite this

Railton, C. J. (2015). A Tilted Subgrid for Two Dimensional FDTD. In 2015 9th European Conference on Antennas and Propagation (EuCAP 2015): Proceedings of a meeting held 13-17 April 2015, Lisbon, Portugal (pp. 1-5). (Proceedings of the European Conference on Antennas and Propagation). Institute of Electrical and Electronics Engineers (IEEE). http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7228425

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Railton, CJ 2015, A Tilted Subgrid for Two Dimensional FDTD. in 2015 9th European Conference on Antennas and Propagation (EuCAP 2015): Proceedings of a meeting held 13-17 April 2015, Lisbon, Portugal. Proceedings of the European Conference on Antennas and Propagation, Institute of Electrical and Electronics Engineers (IEEE), pp. 1-5, 9th European Conference on Antennas and Propagation, EuCAP 2015, Lisbon, Portugal, 12/04/15. <http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7228425>

A Tilted Subgrid for Two Dimensional FDTD. / Railton, Christopher J.

2015 9th European Conference on Antennas and Propagation (EuCAP 2015): Proceedings of a meeting held 13-17 April 2015, Lisbon, Portugal. Institute of Electrical and Electronics Engineers (IEEE), 2015. p. 1-5 (Proceedings of the European Conference on Antennas and Propagation).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

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T1 - A Tilted Subgrid for Two Dimensional FDTD

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PY - 2015/11

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N2 - Although the Finite Difference Time Domain (FDTD) method is well established for addressing a wide variety problems including the characterization of antenna arrays, a long standing challenge is to reduce discretization errors whileavoiding the use of impractically large numbers of cells, particularly when the structure is large and contains regions of fine detail. One solution is to use subgrids. In most published work, Cartesian subgrids are proposed which are in the same orientation as the main grid. However there is considerable benefit to allowing for the subgrid to be tilted. In this work, a method for introducing a tilted subgrid into the 2D FDTD mesh is presented and its effectiveness, accuracy and stability is demonstrated using examples. The method is readily extendable to a full 3D implementation.

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KW - FDTD methods

KW - subgridding

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SN - 9781479970513

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