Title :
A hybrid FE-FMM technique for electromagnetic scattering
Author :
Bindiganavale, Sunil S. ; Volakis, John L.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fDate :
1/1/1997 12:00:00 AM
Abstract :
The authors apply a version of the fast multipole method (FMM) to reduce the storage and computational requirement of the boundary integral in the finite-element boundary-integral method. By virtue of its O(N1.5) operation count, the application of the single-stage FMM results in substantial speedup of the boundary-integral portion of the code, independently of the shape of the boundary-integral contour. They discuss the efficiency of the method and present an application of the technique to electromagnetic scattering from large grooves recessed in a ground plane
Keywords :
boundary integral equations; computational complexity; electromagnetic wave scattering; finite element analysis; bistatic scattering; cavity-backed aperture; electromagnetic scattering; fast multipole method; finite-element boundary-integral method; ground plane; hybrid FE-FMM technique; large grooves; Apertures; Bismuth; Central Processing Unit; Electromagnetic scattering; Fast Fourier transforms; Finite element methods; Geometry; Integral equations; Shape; Sparse matrices;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
