Title :
Solution of combined-field integral equation using multilevel fast multipole algorithm for scattering by homogeneous bodies
Author :
Sheng, Xing Qing ; Jin, Jian-Ming ; Song, Jiming ; Chew, Weng Cho ; Lu, Cai-Cheng
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
fDate :
11/1/1998 12:00:00 AM
Abstract :
We present an accurate method of moments (MoM) solution of the combined field integral equation (CFIE) using the multilevel fast multipole algorithm (MLFMA) for scattering by large, three-dimensional (3-D), arbitrarily shaped, homogeneous objects. We first investigate several different MoM formulations of the CFIE and propose a new formulation, which is both accurate and free of interior resonances. We then employ the MLFMA to significantly reduce the memory requirement and computational complexity of the MoM solution. Numerical results are presented to demonstrate the accuracy and capability of the proposed method. The method can be extended in a straightforward manner to scatterers composed of different homogeneous dielectric and conducting objects
Keywords :
computational complexity; electric field integral equations; electromagnetic wave scattering; magnetic field integral equations; method of moments; 3D homogeneous bodies; EM wave scattering; MoM solution; accuracy; combined-field integral equation; computational complexity reduction; electric field integral equation; homogeneous conducting objects; homogeneous dielectric objects; magnetic field integral equation; memory requirement reduction; method of moments; multilevel fast multipole algorithm; Dielectric materials; Differential equations; Electromagnetic scattering; Integral equations; MLFMA; Magnetic fields; Moment methods; Radar scattering; Resonance; Resonant frequency;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
