A Tilted Subgrid for Two Dimensional FDTD

Christopher J Railton

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publication2015 9th European Conference on Antennas and Propagation (EuCAP 2015)
Subtitle of host publicationProceedings of a meeting held 13-17 April 2015, Lisbon, Portugal
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-5
Number of pages5
ISBN (Print)9781479970513
Publication statusPublished - Nov 2015
Event9th European Conference on Antennas and Propagation, EuCAP 2015 - Lisbon, Portugal
Duration: 12 Apr 201517 Apr 2015

Publication series

NameProceedings of the European Conference on Antennas and Propagation
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISSN (Print)2164-3342

Conference

Conference9th European Conference on Antennas and Propagation, EuCAP 2015
CountryPortugal
CityLisbon
Period12/04/1517/04/15

Keywords

  • FDTD methods
  • subgridding

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