Title :
A model for predicting the scattering by a junction of three dielectric slabs
Author :
D´Agostino, F. ; Ferrara, F. ; Gennarelli, G. ; Migliozzi, M. ; Riccio, G.
Author_Institution :
Univ. of Salerno, Fisciano
Abstract :
The aim of this work is to develop a UAPO based model for predicting the scattering by a junction of three dielectric slabs when illuminated by an incident plane wave. The geometrical optics (GO) response is obtained by extending the approach developed by Burnside and Burgener for lossless slabs (Burnside, 1983). The diffraction contribution is evaluated by using a PO approximation of equivalent surface currents densities and by performing a uniform asymptotic evaluation of the resulting radiation integral. Its resulting analytical expression is given in terms of the transition function of the uniform theory of diffraction (UTD) (Kouyoumjian, 1974), and is easy to handle and to implement as subroutine also in complex computer codes. Simulations are presented to demonstrate the validity of the proposed approach.
Keywords :
current density; dielectric materials; geometrical optics; light diffraction; light scattering; physical optics; PO approximation; UAPO model; dielectric slab junction; diffraction contribution; geometrical optics response; incident plane wave; radiation integral; scattering prediction; surface currents densities; uniform asymptotic evaluation; uniform asymptotic physical optics model; uniform theory of diffraction; Current density; Dielectrics; Geometrical optics; Optical diffraction; Optical losses; Optical scattering; Optical surface waves; Performance evaluation; Predictive models; Slabs;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4396038
