Analysis of transient electromagnetic scattering phenomena using a two-level plane wave time-domain algorithm

Citation
B. Shanker et al., Analysis of transient electromagnetic scattering phenomena using a two-level plane wave time-domain algorithm, IEEE ANTENN, 48(4), 2000, pp. 510-523
Citations number
35
Categorie Soggetti
Information Tecnology & Communication Systems
Journal title
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
ISSN journal
0018926X → ACNP
Volume
48
Issue
4
Year of publication
2000
Pages
510 - 523
Database
ISI
SICI code
0018-926X(200004)48:4<510:AOTESP>2.0.ZU;2-S
Abstract
A fast algorithm is presented for solving electric, magnetic, and combined field time-domain integral equations pertinent to the analysis of surface s cattering phenomena. The proposed two-level plane wave time-domain (PWTD) a lgorithm permits a numerically rigorous reconstruction of transient near fi elds from their far-held expansion and augments classical marching-on in-ti me (MOT) based solvers. The computational cost of analyzing surface scatter ing phenomena using PWTD-enhanced MOT schemes scales as O(NtNs3/2 log N-s) as opposed to O(NtNs2) for classical MOT methods, where N-t and N-s are the numbers of temporal and spatial basis functions discretizing the scatterer current. Numerical results that demonstrate the efficacy of the proposed s olver in analyzing transient scattering from electrically large structures and that confirm the above complexity estimate are presented.