Singularity of the magnetic-field integral equation and its extraction

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Gurel L., Ergul O.

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, vol.4, pp.229-232, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 4
  • Publication Date: 2005
  • Doi Number: 10.1109/lawp.2005.851103
  • Journal Name: IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.229-232
  • Keywords: electric-field integral equation, integral equations, magnetic-field integral equation, moment methods, numerical analysis, singularity extraction, TRIANGLE, SHAPE
  • Middle East Technical University Affiliated: No

Abstract

In the solution of the magnetic-field integral equation (MFIE) by the method of moments (MOM) on planar triangulations, singularities arise both in the inner integrals on the basis functions and also in the outer integrals on the testing functions. A singularity-extraction method is introduced for the efficient and accurate computation of the outer integrals, similar to the way inner-integral singularities are handled. In addition, various formulations of the MFIE and the electric-field integral equation are compared, along with their associated restrictions.