Beam scattering by a right-angled impedance wedge

TitleBeam scattering by a right-angled impedance wedge
Publication TypeJournal Article
Year of Publication2004
AuthorsCheung, H. D., and E. V. Jull
JournalAntennas and Propagation, IEEE Transactions on
Pagination497 - 504
Date Publishedfeb.
Keywordsbeam scattering, electromagnetic scattering, electromagnetic surface waves, electromagnetic wave diffraction, electromagnetic wave scattering, geometrical theory of diffraction, grazing incidence surface waves, ray tracing, receiver, right-angled impedance wedge, source directivities, specular reflection, surface electromagnetic waves, two-dimensional high frequency scattering, UHF radio propagation, uniform asymptotic solution, urban propagation modeling

Following earlier developments, a uniform asymptotic solution for two-dimensional high frequency scattering by a right-angled impedance wedge is presented. The wedge supports surface waves on both faces and numerical examples show the relative significance of these surface waves for different surface parameters, source directivities and positions of source and receiver. Surface parameters extracted from experimental data for buildings are used to show that for near grazing incidence surface waves can have a very significant effect along the direction of specular reflection even in the far field. These results should be important in urban propagation modeling.


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