Elimination of infinities in equivalent edge currents, part I: Fringe current components

New expressions are derived for the fringe current components of the equivalent edge currents. They are obtained by asymptotic endpoint evaluation of the fringe current radiation integral over the "ray coordinate" measured along the diffracted ray grazing the surface of the local wedge. Th...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 34; no. 7; pp. 912 - 918
Main Author Michaeli, A.
Format Journal Article
LanguageEnglish
Published IEEE 01.07.1986
Subjects
Apertures
H infinity control
Lighting
Optical scattering
Optical surface waves
Physical optics
Physical theory of diffraction
Proposals
Surface waves
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Summary:New expressions are derived for the fringe current components of the equivalent edge currents. They are obtained by asymptotic endpoint evaluation of the fringe current radiation integral over the "ray coordinate" measured along the diffracted ray grazing the surface of the local wedge. The resulting expressions, unlike the previous ones, are finite for all aspects of illumination and observation, except for the special case where the direction of observation is the continuation of a glancing incident ray propagating "inwards" with respect to the wedge surface (the Ufimtsev singularity).
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.1986.1143913