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A Generalized Uniform Theory of Diffraction Method for Complex Illumination Sources Accounting for Multiply-Diffracted Rays
Karagounis Giorgos
De Zutter Daniel
Vande Ginste Dries
Computational Electromagnetics International Workshop (CEM), 2015-07-01 to 2015-07-04.
Summary
A new formalism is presented that generalizes the use of the uniform theory of diffraction (UTD) to arbitrary illumination sources. The formalism returns the field in terms of a multipole expansion inside an extended observation region. When multiple UTD canonical objects are present, the multiplydiffracted rays can conveniently be superimposed. As an example, the scattering of a higher-order Hermite-Gaussian beam at a perfectly electrically conducting slit is examined.
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