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

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1 Author(s)
Michaeli, A. ; Armament Development Authority, Haifa, Israel

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).

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Antennas and Propagation, IEEE Transactions on  (Volume:34 ,  Issue: 7 )