In this paper, 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 CFIE and propose a new formulation, which is both accurate and free of interior resonances. We then employ 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.
|Number of pages||9|
|Journal||IEEE Transactions on Antennas and Propagation|
|State||Published - 1998|
Bibliographical noteFunding Information:
Manuscript received August 7, 1997; revised July 22, 1998. This work was supported in part by the Office of Naval Research under Grant N00014-95-1-0848, by a grant from the Air Force Office of Scientific Research via the MURI Program under Contract Number F49620-96-1-0025, and by the National Science Foundation under Grant NSF ECE 94-57735.
- Electromagnetic scattering
- Moment methods
ASJC Scopus subject areas
- Electrical and Electronic Engineering