A comparison of the properties of radiating boundary conditions in the FDTD method for finite discretisation and non-planar waves

C J Railton, EM Daniel

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Abstract

The availability of effective radiating boundary conditions (RBCs) for use with the finite difference time domain (FDTD) method is essential for the efficient application of the technique to scattering and radiation problems. The majority of published analyses of the behaviour of various RBCs are restricted to the case of plane wave incidence and infinitely fine discretisation, situations which never occur in practice. In the present contribution, the behaviour of RBCs in realistic situations is presented and it is shown that the plane wave behaviour is not a good guide as to the behaviour in practical cases. The best RBC for use in general cases is discussed
Original languageEnglish
Pages (from-to)276 - 281
JournalIEEE Transactions on Antennas and Propagation
Volume42
Issue number2
DOIs
Publication statusPublished - Feb 1994

Bibliographical note

Sponsorship: We would like to thank Professor J. P. McGeehan of the Centre for Communications Research, University of Bristol for the provision of
facilities for this work.

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