Abstract : An original approach to solve 2D time harmonic diffraction problems involving locally perturbed gratings is proposed. The propagation medium is composed of a periodically stratified half-space and a homogeneous half-space containing a bounded obstacle. Using Fourier and Floquet transforms and integral representations, the diffraction problem is formulated as a coupled problem of Fredholm type with two unknowns: the trace of the diffracted field on the interface separating the two half-spaces on one hand, and the restriction of the diffracted field to a bounded domain surrounding the obstacle, on the other hand.
Document type :
Journal articles
Complete list of metadatas
https://hal-ensta-paris.archives-ouvertes.fr//hal-00990202
Contributor : Aurélien Arnoux
<>
Submitted on : Tuesday, May 13, 2014 - 11:46:22 AM
Last modification on : Wednesday, July 3, 2019 - 10:48:03 AM
