Beam array scattering by a right-angled impedance wedge

TitleBeam array scattering by a right-angled impedance wedge
Publication TypeConference Paper
Year of Publication2002
AuthorsCheung, H. D., and E. V. Jull
Conference NameAntennas and Propagation Society International Symposium, 2002. IEEE
Pagination74 - 77 vol.2
Keywordsantenna arrays, aperture antennas, beam array scattering, cellular mobile communications, cellular radio, complex sources, E-polarization, electromagnetic wave polarisation, electromagnetic wave scattering, H-polarization, high frequency beam scattering, inductive surface reactances, local beam arrays, radiowave propagation, right-angled impedance wedge, surface wave field, tilted aperture distribution, uniform asymptotic solution, urban building surfaces
Abstract

The dramatic increase in the use of cellular mobile communications requires an understanding of the signal propagation mechanism. A uniform asymptotic solution for high frequency beam scattering has been described previously (Cheung et al.). The calculation here is extended to an array of complex sources to simulate an aperture distribution tilted away from or directly incident on the edge of an impedance right angle wedge. The solution is uniform across incident and reflection shadow boundaries. The surface wave field contribution is apparent for H-polarization with the surface impedance chosen. The numerical results show interesting polarization dependent differences in the scattering patterns for local beam arrays with their beam axes directed away from the edge of the wedge. Inductive surface reactances characteristic of urban building surfaces show evidence of surface waves for H-polarization but, as expected, not for E-polarization.

URLhttp://dx.doi.org/10.1109/APS.2002.1016031
DOI10.1109/APS.2002.1016031

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