Scattering by an infinite wedge with tensor impedance boundary conditions-a moment method/physical optics solution for the currents
نویسندگان
چکیده
منابع مشابه
A High Frequency Boundary Element Method for Scattering by Convex Polygons with Impedance Boundary Conditions
We consider scattering of a time harmonic incident plane wave by a convex polygon with piecewise constant impedance boundary conditions. Standard finite or boundary element methods require the number of degrees of freedom to grow at least linearly with respect to the frequency of the incident wave in order to maintain accuracy. Extending earlier work by Chandler-Wilde and Langdon for the sound ...
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This work reports some recent advances in diffraction theory by canonical shapes like wedges or cones with impedancetype boundary conditions. Our basic aim in the present paper is to demonstrate that functional difference equations of the second order deliver a very natural and efficient tool to study such a kind of problems.† To this end we consider two problems: diffraction of a normally inci...
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We briefly review the use and the derivation of Generalized Impedance Boundary Conditions (GIBC) in the case of thin dielectric coatings and in the case of strongly absorbing media, within the context of electromagnetic scattering problem at a fixed frequency. We then numerically test the validity and accuracy of these boundary conditions in the case of high absorption. A numerical treatment of...
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In the context of scattering problems in the harmonic regime, we consider the problem of identification of some Generalized Impedance Boundary Conditions (GIBC) at the boundary of an object (which is supposed to be known) from far field measurements associated with a single incident plane wave at a fixed frequency. The GIBCs can be seen as approximate models for thin coatings, corrugated surfac...
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ژورنال
عنوان ژورنال: IEEE Transactions on Antennas and Propagation
سال: 1991
ISSN: 0018-926X
DOI: 10.1109/8.86874