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By Kinber, Boris Evseevich; Borovikov, Vladimir Andreevich

Information the tips underlying geometrical concept of diffraction (GTD) in addition to its relationships with different EM theories

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Example text

11. 10 indicates that the correction has significantly depressed oscillations and effected a better approximation to the specified radiation pattern. 11 10 20 0, degrees 30 40 Corrected antenna radiation pattern a D= 10X b Z) = 25X specified pattern pattern measured for

5 Asymptotic solutions of reflection problems If a ray field is incident on a smooth surface, the reflected field may be sought also in the form of a ray expansion. Of course, the solution is constituted only as the sum of the incident and reflected fields for only a rather small class of boundary-value problems in which the primary field illuminates the entire body. However, for more involved problems of diffraction by bodies with edges or bodies of limited size, behind which a shadow region occurs, the construction of a ray expansion of the reflected field by the ray expansion of the incident field is a necessary component of the solution [36, 38].

And the unit vectors p,

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