Linear-linear basis functions for MLFMA solutions of magnetic-field and combined-field integral equations


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Ergul O. , Gurel L.

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, cilt.55, ss.1103-1110, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 55 Konu: 4
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1109/tap.2007.893393
  • Dergi Adı: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
  • Sayfa Sayıları: ss.1103-1110

Özet

We present the linear-linear (LL) basis functions to improve the accuracy of the magnetic-field integral equation (MFIE) and the combined-field integral equation (CFIE) for three-dimensional electromagnetic scattering problems involving closed conductors. We consider the solutions of relatively large scattering problems by employing the multilevel fast multipole algorithm. Accuracy problems of MFIE and CFIE arising from their implementations with the conventional Rao-Wilton-Glisson (RWG) basis functions can be mitigated by using the LL functions for discretization. This is achieved without increasing the computational requirements and with only minor modifications in the existing codes based on the RWG functions.