Linear-Linear Basis Functions for MLFMA Solutions of Magnetic-Field and Combined-Field Integral Equations

Author

Ergül, Özgür ; Gürel, Levent

Author_Institution

Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara

Volume

55

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1103

Lastpage

1110

Abstract

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

Keywords

electromagnetic wave scattering; magnetic field integral equations; CFIE; MFIE; MLFMA solution; RWG function; combined-field integral equation; linear-linear basis function; magnetic-field integral equation; multilevel fast multipole algorithm; three-dimensional electromagnetic scattering problem; Conductors; Current distribution; Electromagnetic scattering; Geometry; Integral equations; MLFMA; Moment methods; Radar scattering; Testing; Vectors; Basis functions; combined-field integral equation; magnetic-field integral equation; multilevel fast multipole algorithm;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2007.893393

Filename

4148068