A brief history of the UTD-focus on edge diffraction

Summary form only given. The author presented a brief history of the UTD (uniform theory of diffraction) for the diffraction by edges in perfectly conducting surfaces. Particular attention was given to the three-dimensional case for the perfectly conducting wedge; a reexamination of the solution to the canonical wedge problem; and double diffraction, where a second edge is illuminated by a field from the first edge which is not ray optical.<
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