MR-preconditioned ACA for sub-wavelength discretization

Author

Echeverri, M. ; Vipiana, Francesca ; Vecchi, Giuseppe ; Francavilla, Matteo A.

Author_Institution

Antenna & EMC Lab. (LACE), Politec. di Torino, Turin, Italy

fYear

2013

fDate

7-13 July 2013

Firstpage

63

Lastpage

64

Abstract

A stable fast solver is proposed for the EFIE-MoM analysis of problems with significant sub-wavelength details and/or discretization, and overall sizes up to a few wavelengths. The Adaptive Cross Approximation is used to compress the EFIE-MoM matrix, while a Multiresolution preconditioner is used to improve the ill-conditioning associated to the EFIE in the low frequency and/or dense-discretization regime. Numerical results shows the effectiveness of the proposed approach.

Keywords

approximation theory; conductors (electric); electric field integral equations; electromagnetic wave scattering; matrix algebra; method of moments; EFIE-MoM analysis; EFIE-MoM matrix compression; MR-preconditioned ACA; adaptive cross approximation; dense-discretization regime; electric field integral equation; frequency regime; ill-conditioning improvement; low frequency regime; method-of-moments; multiresolution preconditioner; perfect electric conductor problems; subwavelength discretization; Antennas; Approximation methods; Convergence; Electromagnetic compatibility; Matrix decomposition; Method of moments; Skeleton; Method of moments; adaptive cross approximation; fast solver; multiresolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE

Conference_Location

Orlando, FL

ISSN

1522-3965

Print_ISBN

978-1-4673-5315-1

Type

conf

DOI

10.1109/APS.2013.6710692

Filename

6710692