NDLI: High-order impedance boundary conditions for multilayer coated 3-D objects

Content Provider	IEEE Xplore Digital Library
Author	Marceaux, O. Stupfel, B.
Copyright Year	1963
Abstract	The scattering problem by a multilayer coated three-dimensional (3-D) object where the coating is modeled by an impedance boundary condition (IBC) is considered. First, the exact boundary condition is obtained for an infinite planar coating with an arbitrary number of layers. Then, various approximations for the pseudodifferential operators involved in this exact condition are proposed. In the expressions of the resulting IBCs, all tangential derivatives of the fields of order higher than two are suppressed. These IBCs are compared, in terms of numerical efficiency, by computing either the reflection coefficients on an infinite planar metal-backed coating or the radar cross section (RCS) of a perfectly conducting coated sphere using the tangent plane approximation. In both cases, it is found that the highest order IBC models the coating with a good accuracy. Finally, some guidance is given on how this IBC may be numerically implemented in an integral equation or a finite-element formulation for an arbitrarily shaped object.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	429
Ending Page	436
Page Count	8
File Size	296027
File Format	PDF
ISSN	0018926X
Volume Number	48
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Impedance Boundary conditions Nonhomogeneous media Coatings Integral equations Radar scattering Reflection Finite element methods Radar cross section
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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