Title :
Efficient EM scattering analysis based on MoM, HSS direct solver, and RRQR decomposition
Author :
Ana B. Manić;Branislav M. Notaroš;François-Henry Rouet;Xiaoye Sherry Li
Author_Institution :
Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, USA
fDate :
7/1/2015 12:00:00 AM
Abstract :
A novel technique is presented for efficient electromagnetic (EM) scattering analysis based on a double (geometrical and current-approximation) higher order method of moments (MoM) in the surface integral equation (SIE) formulation in conjunction with a fast parallel direct solver for dense linear systems using hierarchically semiseparable structures (HSS). MoM-SIE matrix blocks are replaced by their low-rank approximations obtained by the rank-revealing QR (RRQR) decomposition for memory compression. Numerical example shows a dramatic memory compression using the novel method while preserving the accuracy of the solution.
Keywords :
"Binary trees","Method of moments","Matrix decomposition","Integral equations","Scattering","Approximation methods","Memory management"
Conference_Titel :
Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on
DOI :
10.1109/APS.2015.7305219
