Title :
Edge excited surface waves on impedance surfaces
Author :
Manara, G. ; Mugnaini, S. ; Nepa, P.
Author_Institution :
Dept. of Inf. Eng., Pisa Univ., Italy
Abstract :
In this paper, the surface waves excited at the edge of a wedge characterized by anisotropic impedance faces are analyzed, when the edge is illuminated by an arbitrarily polarized plane wave at oblique incidence. In the wedge scattering problem, these guided wave modes are associated with pole singularities exhibited by the angular spectra for the total field in the region surrounding the wedge. The location of the above pole singularities determines the wave vector and the existence region of the corresponding SW, while their complex amplitude is provided by the pole residue. A general equation for the SW wave vectors is derived that is valid for any surface impedance tensor and independent of the geometrical wedge configuration.
Keywords :
anisotropic media; electromagnetic wave polarisation; electromagnetic wave scattering; poles and zeros; surface impedance; tensors; vectors; waveguide theory; SW wave vectors; angular spectra; anisotropic impedance faces; arbitrarily polarized plane wave; edge excited surface waves; guided wave modes; impedance surfaces; oblique incidence; pole residue; pole singularities; surface impedance tensor; total field; wave vector; wedge scattering; Anisotropic magnetoresistance; Diffraction; Geometry; Information analysis; Optical scattering; Optical surface waves; Polarization; Surface impedance; Surface waves; Tensile stress;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552455
