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Diffraction of Electromagnetic Waves by a Moving Impedance Wedge
Author(s) -
Lang K. C.
Publication year - 1971
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs006i006p00655
Subject(s) - wedge (geometry) , diffraction , physics , perpendicular , electromagnetic radiation , surface wave , optics , amplitude , plane wave , doppler effect , electrical impedance , computational physics , geometry , mathematics , quantum mechanics , astronomy
A formal solution to the problem of the diffraction of electromagnetic waves by a wedge with given surface impedances, moving parallel or perpendicular to its bisection plane with constant velocity, has been obtained. Characteristics of the diffracted field are studied, and approximate expressions for the Doppler shifts of the excited surface‐wave fields and the scattered field in the shadow region are evaluated for both relativistic and on‐relativistic considerations. Plots of these results for a 60° wedge and a half plane are shown to illustrate their dependence on the surface impedance, the wedge angle, and the angle of incidence. Also, the variation of the amplitude of surface waves with respect to the velocity of the moving wedge is discussed.