DBPapers

ELECTROMAGNETIC WAVES AND MATERIAL PROPERTIES

AUTHOR/S: O. YILDIRIM, T. BALTA
Sunday 1 August 2010 by Libadmin2009

9th International Multidisciplinary Scientific GeoConference - SGEM2009, www.sgem.org, SGEM2009 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 14-19, 2009, Vol. 2, 791-794 pp

ABSTRACT

The standard impedance condition is the simplest way of simulating the material
properties of a planar surface. This method is only accurate if the coating is very thin or
lossy. To improve the accuracy, generalized impedance conditions can be used to
simulate the material properties of a planar surface. The accurate solution of a scattering
problem via planar slab depends on its thickness, the wavelength of incident wave, and
material properties of the slab. Since boundary condition is local in character, accuracy
decreases when the slab is illuminated at near grazing angle. Accuracy also decreases if
the slab has a curved shape. To increase accuracy or provide a better simulation of the
material, we have to search for alternative conditions. In this study, the Taylor series
method is applied to a planar slab. This method gives reasonable solution even if slab
has a curved shape. Power reflection and transmission coefficients are depicted versus
different impedance and observation angles.

Keywords: Boundary Conditions, Material Properties, Reflection, Transmission