Title :
An enhanced integral-equation formulation for accurate analysis of frequency-selective structures
Author :
Valerio, Guido ; Galli, Alessandro ; Wilton, Donald R. ; Jackson, David R.
Author_Institution :
Dept. of Inf. Eng., Electron. & Telecommun., Sapienza Univ. of Rome, Rome, Italy
Abstract :
In this work, a very efficient mixed-potential integral-equation formulation is implemented for the rigorous analysis of multilayered structures with arbitrarily-shaped two-dimensional periodic metallic and/or dielectric inclusions. Original acceleration techniques have been developed for the computation of the components of the scalar and dyadic Green´s functions, based on different types of asymptotic extractions according to the potential considered. The theoretical approach and its computational convenience have been validated through different full-wave analyses concerning both scattering problems and complex-mode dispersive behaviours in various frequency- selective structures for microwave applications.
Keywords :
Green´s function methods; electromagnetic wave scattering; frequency selective surfaces; integral equations; acceleration technique; asymptotic extraction; complex-mode dispersive behaviour; dielectric inclusion; dyadic Green´s function; frequency-selective structure; full-wave analysis; microwave application; mixed-potential integral-equation formulation; multilayered structure; scalar Green´s function; scattering problem; two-dimensional periodic metallic inclusion; Acceleration; Convergence; Dielectrics; Dispersion; Electromagnetics; Microwave theory and techniques; Periodic structures; Ewald method; Green´s functions; acceleration techniques; frequency-selective periodic structures; multilayered media;
Conference_Titel :
Microwave Conference (EuMC), 2011 41st European
Conference_Location :
Manchester
Print_ISBN :
978-1-61284-235-6
