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ITD formulation for the currents on a plane angular sector

Creative Commons 'BY' version 4.0 license

Asymptotic, closed form expressions of the fringe currents of the plane angular sector of a plane wave far-field regime are derived using the Incremental Theory of Diffraction (ITD). Numerical results show that ITD is more accurate than the Uniform Theory of Diffraction. A double diffracted field is found to occur at a shadow boundary line equal to 52°.

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