FDTD Modeling of Electromagnetic Wave Scattering From a Wedge With Perfectly Reflecting Boundaries: Comparisons Against Analytical Models and Calibration

ÇAKIR G., Sevgi L., Ufimtsev P. Y.

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol.60, no.7, pp.3336-3342, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 60 Issue: 7
  • Publication Date: 2012
  • Doi Number: 10.1109/tap.2012.2196948
  • Journal Name: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3336-3342
  • Keywords: Code calibration, diffraction, electromagnetic scattering, exact integrals, exact series, FDTD, finite-difference time-domain, geometrical optics (GO), hard boundary condition, high frequency asymptotics (HFA), numerical methods, physicaloptics (PO), physical theory of diffraction (PTD), soft boundary condition, uniform theory of diffraction (UTD), DIFFRACTION COEFFICIENTS, VIRTUAL TOOL, EQUATIONS
  • Kocaeli University Affiliated: Yes

Abstract

A classical, canonical problem of electromagnetic wave scattering from a nonpenetrable wedge is modeled with the finite-difference time-domain (FDTD) method, and results are calibrated against the analytical reference solution. A novel, numerical multistep diffraction coefficient calculation model is introduced. Comparisons against analytical exact solutions as well as high frequency asymptotic (HFA) techniques such as the uniform theory of diffraction (UTD) and parabolic equation (PE) method are also given.