FOURIER METHODS APPLICABLE IN THE NUMERICAL SOLUTION OF ELECTROMAGNETIC TIME-DOMAIN SCATTERING PROBLEMS
作者： Anton G. Tijhuis
DOI: 10.1007/978-94-009-0665-5_18
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摘要: In transient electromagnetic scattering problems, Fourier or Laplace transformations are employed to attain a spectral decomposition in terms of solutions reduced problems lower dimensionality. The resulting inversion integrals evaluated either by contour deformation into the complex frequency order plane, direct evaluation one more Bromwich integrals. modal representations from former approach provide detailed physical insight process; latter is suitable for an efficient computation desired time-domain solution. Both approaches illustrated “tutorial” problem radially inhomogeneous, lossy dielectric circular cylinder embedded homogeneous, lossless dielectric. Numerical results presented and discussed.
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