Title :
Efficient computation of mixed potential dyadic Green´s functions for a 1D periodic array of line sources in layered media
Author :
Valerio, Guido ; Wilton, Donald R. ; Jackson, David R. ; Galli, Alessandro
Author_Institution :
Dept. of Electron. Eng., Sapienza Univ. of Rome, Rome, Italy
Abstract :
In this paper an original approach is described for the efficient computation of the mixed-potential scalar and dyadic Green´s functions for a one-dimensional (1D) periodic array of line sources embedded in a planar stratified structure. Suitable asymptotic extractions, corresponding to integrations in z of free-space Green´s functions, are performed on the slowly-converging spectral series. The extracted terms are summed back through the Ewald method, modified and optimized to efficiently deal with these new free-space terms.
Keywords :
Green´s function methods; electromagnetic wave propagation; inhomogeneous media; 1D periodic array; Ewald method; free-space Green´s function; layered media; line sources; mixed potential dyadic Green´s function; mixed-potential scalar Green´s function; planar stratified structure; spectral series; Acceleration; Computational electromagnetics; Convergence; Embedded computing; Green´s function methods; Integral equations; Nonhomogeneous media; Optimization methods; Periodic structures; Shape;
Conference_Titel :
Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-3385-8
Electronic_ISBN :
978-1-4244-3386-5
DOI :
10.1109/ICEAA.2009.5297555
