Improvement of the PO-MoM hybrid method by accounting for effects of perfectly conducting wedges

Author

Jakobus, Ulrich ; Landstorfer, Friedrich M.

Author_Institution

Inst. fur Hochfrequenztech., Stuttgart Univ., Germany

Volume

43

Issue

10

fYear

1995

fDate

10/1/1995 12:00:00 AM

Firstpage

1123

Lastpage

1129

Abstract

A correction of the conventional physical optics (PO) current close-to-perfectly conducting wedges based on an application of the uniform geometrical theory of diffraction (UTD) is presented. This improved PO current is used in a hybrid formulation in combination with the method of moments (MoM) to deal with three-dimensional scattering bodies of arbitrary shape. The accuracy of this hybrid method is demonstrated by some examples. As opposed to an application of the physical theory of diffraction (PTD), only surface current densities and no fictitious electric and magnetic line currents along the edges are involved which allows a uniform treatment of the MoM and the PO region by expressing the surface current density as a superposition of basis functions defined over triangular patches

Keywords

current density; electromagnetic wave scattering; geometrical theory of diffraction; method of moments; physical optics; basis functions; electric line currents; hybrid formulation; magnetic line currents; method of moments; perfectly conducting wedges; physical optics current close-to-perfectly conducting wedges; physical theory of diffraction; surface current densities; surface current density; three-dimensional scattering bodies; triangular patches; uniform geometrical theory of diffraction; Current density; Electromagnetic scattering; Message-oriented middleware; Moment methods; Optical scattering; Optical surface waves; Physical optics; Physical theory of diffraction; Shape; Surface treatment;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.467649

Filename

467649