The finite-difference time-domain (FD-TD) method for numerical modeling of electromagnetic scattering

Allen Taflove, Korada R. Umashankar

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


This paper reviews recent applications of the finite-difference time-domain (FD-TD) numerical modeling approach for Maxwell's equations. FD-TD is very simple in concept and execution. However, it is remarkably robust, providing highly accurate modeling predictions for a wide variety of electromagnetic wave interaction problems. The objects modeled to date range from simple 2-D geometric shapes to extremely complex 3-D aerospace and biological systems. Rigorous analytical or experimental validations are provided for the canonical shapes, and it is shown that FD-TD predictive data for near fields and radar cross section (RCS) are in excellent agreement with the benchmark data. It is concluded that, with continuing advances in FD-TD modeling theory for target features relevant to the RCS problem, and with continuing advances in vector- and concurrent-processing supercomputer technology, it is likely that FD-TD numerical modeling will occupy an important place in RCS technology in the 1990's and beyond.

Original languageEnglish (US)
Pages (from-to)3086-3091
Number of pages6
JournalIeee Transactions on Magnetics
Issue number4
StatePublished - Jul 1989
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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