Broadband Solutions of Potential Integral Equations With NSPWMLFMA


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Khalichi B., Ergul Ö. S. , Erturk V. B.

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol.67, no.6, pp.4307-4312, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67 Issue: 6
  • Publication Date: 2019
  • Doi Number: 10.1109/tap.2019.2905965
  • Title of Journal : IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
  • Page Numbers: pp.4307-4312
  • Keywords: Fast solvers, low-frequency (LF) breakdown, nondirective stable plane-wave MLFMA (NSPWMLFMA), potential integral equations (PIEs), FAST MULTIPOLE METHOD, HELMHOLTZ-EQUATION, ERROR CONTROL, EFIE, DISCRETIZATION

Abstract

In this communication, a mixed-form multilevel fast multipole algorithm (MLFMA) is combined with the recently introduced potential integral equations (PIEs), also called as the A-phi system, to obtain an efficient and accurate broadband solver that can be used for the solution of electromagnetic scattering from perfectly conducting surfaces over a wide frequency range including low frequencies. The mixed-form MLFMA uses the nondirective stable planewave MLFMA (NSPWMLFMA) at low frequencies and the conventional MLFMA at middle/ high frequencies. Various numerical examples are presented to assess the validity, efficiency, and accuracy of the developed solver.