Back to Search Start Over

Time-Domain Single-Source Integral Equations for Analyzing Scattering From Homogeneous Penetrable Objects.

Authors :
Valdes, Felipe
Andriulli, Francesco P.
Bagci, Hakan
Michielssen, Eric
Source :
IEEE Transactions on Antennas & Propagation. Mar2013, Vol. 61 Issue 3, p1239-1254. 16p.
Publication Year :
2013

Abstract

<?Pub Dtl?>Single-source time-domain electric- and magnetic-field integral equations for analyzing scattering from homogeneous penetrable objects are presented. Their temporal discretization is effected by using shifted piecewise polynomial temporal basis functions and a collocation testing procedure, thus allowing for a marching-on-in-time (MOT) solution scheme. Unlike dual-source formulations, single-source equations involve space-time domain operator products, for which spatial discretization techniques developed for standalone operators do not apply. Here, the spatial discretization of the single-source time-domain integral equations is achieved by using the high-order divergence-conforming basis functions developed by Graglia alongside the high-order divergence- and quasi curl-conforming (DQCC) basis functions of Valdés The combination of these two sets allows for a well-conditioned mapping from div- to curl-conforming function spaces that fully respects the space-mapping properties of the space-time operators involved. Numerical results corroborate the fact that the proposed procedure guarantees accuracy and stability of the MOT scheme. [ABSTRACT FROM PUBLISHER]

Details

Language :
English
ISSN :
0018926X
Volume :
61
Issue :
3
Database :
Academic Search Index
Journal :
IEEE Transactions on Antennas & Propagation
Publication Type :
Academic Journal
Accession number :
85988326
Full Text :
https://doi.org/10.1109/TAP.2012.2227655