A volume adaptive integral method (VAIM) for 3-D inhomogeneous objects

Author

Zhang, Zhong Qing ; Liu, Qing Huo

Author_Institution

Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA

Volume

1

Issue

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

102

Lastpage

105

Abstract

This article describes a volume adaptive integral method (VAIM) for electromagnetic scattering from three-dimensional (3-D) inhomogeneous objects. By projecting the unknown current density within an arbitrary element in the inhomogeneous object onto a fictitious uniform grid, this method calculates the far-zone interactions of basis and testing functions through the fast Fourier transform, thus greatly reducing the memory requirement to O(N) and CPU requirement to O(NlogN), where N is the number of unknowns. The numerical results have been validated by the method of moment.

Keywords

current density; electromagnetic wave scattering; fast Fourier transforms; inhomogeneous media; integral equations; method of moments; 3D inhomogeneous objects; CPU requirement reduction; EM wave scattering; FFT; MoM; basis functions; current density; electromagnetic wave scattering; far-zone interactions; fast Fourier transform; memory requirement reduction; method of moment; testing functions; uniform grid; volume adaptive integral method; volume integral equations; Computer errors; Electromagnetic scattering; Fast Fourier transforms; Integral equations; Iterative methods; Large-scale systems; Moment methods; Nonuniform electric fields; Radar scattering; Surface treatment;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2002.805126

Filename

1107060