An FEM-based numerical diffraction coefficient for irregular wedge configurations

Author

Pelosi, Giuseppe ; Coccioli, Roberto ; Manara, Giuliano

Author_Institution

Dept. of Electr. Eng., Florence Univ., Italy

Volume

45

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

563

Lastpage

564

Abstract

A hybrid numerical technique based on the finite-element method (FEM) is exploited to define a numerical diffraction coefficient for irregular wedge configurations as, for instance, a perfectly conducting wedge with an inhomogeneously filled cavity-backed aperture in one of its faces, or a wedge with a rounded edge. The hybrid technique combines the FEM with the uniform geometrical theory of diffraction (UTD), and is used to develop a numerical diffraction coefficient to account for contributions to the scattered field due to localized inhomogeneities in an otherwise canonical perfectly conducting wedge

Keywords

electromagnetic fields; electromagnetic wave scattering; finite element analysis; geometrical theory of diffraction; EM wave scattering; FEM; UTD; finite-element method; hybrid numerical technique; inhomogeneously filled cavity-backed aperture; irregular wedge configurations; localized inhomogeneities; numerical diffraction coefficient; perfectly conducting wedge; rounded edge; scattered field; uniform geometrical theory of diffraction; Apertures; Conductors; Current distribution; Electromagnetic analysis; Electromagnetic diffraction; Electromagnetic scattering; Finite element methods; Geometry; Nonuniform electric fields; Physical theory of diffraction;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.558673

Filename

558673