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- W2018183370 abstract "Diffraction by a perfectly conducting half-plane embedded in a transversely unbounded region filled with a uniform, lossless but arbitrarily anisotropic medium characterized by a Hermitian dielectric tensor ε is studied. Excitation is by a linearly phased line source of arbitrarily polarized electric and magnetic currents. Formal solutions are obtained in terms of a two-dimensional plane-wave modal superposition (over the entire range of the transverse wave numbers representing the incident (η n ) and scattered (η) waves). The original contours of integration in both the complex η n and η planes are deformed simultaneously into their respective paths of steepest descent, and contributions to intercepted singular points are considered. Asymptotic (short-wavelength) analysis yields results which, despite their relative complexity, are cast into invariant, ray-optical forms, amenable to distinct physical (geometric-optical) interpretation.Mode coupling at the boundary gives rise to source-excited lateral waves as well as geometric-optical (incident and reflected) waves. In the short-wavelength limit, the edge behaves as a virtual line source whose magnitude is proportional to the total field incident upon it (which is composed of direct rays emerging from the source, as well as a lateral wave propagating along the boundary, towards the edge). Both the direct and the lateral waves are diffracted by the edge (i.e., coupled to edge-excited radial and secondary lateral waves) in a manner identical with that discussed in Part I." @default.
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- W2018183370 date "1967-11-01" @default.
- W2018183370 modified "2023-09-27" @default.
- W2018183370 title "EDGE DIFFRACTION IN AN ARBITRARY ANISOTROPIC MEDIUM. II" @default.
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- W2018183370 doi "https://doi.org/10.1139/p67-297" @default.
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