Title :
Convergence analysis for buffered block forward-backward (BBFB) method applied to EFIE
Author :
Brennan, Conor ; Bogusevschi, Diana
Author_Institution :
Sch. of Electron. Eng., Dublin City Univ.
Abstract :
The efficient solution of the matrix equation ZJ = V produced when the method of moments is applied to the electric field integral equation (EFIE) is a central topic in computational electromagnetics. While the most commonly used solvers are those based upon the generation of Krylov sub-spaces, other iterative solvers have been proposed most notably the forward-backward method. Applying block forward-backward methods to open bodies using the EFIE requires a modification of the standard approach, to prevent the solution from diverging due to the introduction of spurious edge effects. A modified block forward-backward method has been developed for application to scattering from open bodies. This method is referred to as the `buffered block forward backward´ (BBFB) method. This paper discusses the development of convergence criteria for the BBFB and presents the numerical work comparing its convergence to that of a Krylov subspace method for a series of problems
Keywords :
computational electromagnetics; electric field integral equations; electromagnetic wave scattering; iterative methods; matrix algebra; method of moments; EFIE; Krylov sub-spaces; buffered block forward-backward method; computational electromagnetics; convergence analysis; electric field integral equation; iterative solvers; matrix equation; method of moments; scattering; spurious edge effects; Computational electromagnetics; Convergence of numerical methods; Electromagnetic analysis; Electromagnetic scattering; Forward contracts; Gradient methods; Integral equations; Iterative methods; Matrix decomposition; Moment methods;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711515