Title :
The diffraction of an inhomogeneous plane wave by an impedance wedge in a lossy medium
Author :
Manara, Giuliano ; Nepa, Paolo ; Kouyoumjian, Robert G. ; Taute, Barendt J E
Author_Institution :
Dept. of Inf. Eng., Pisa Univ., Italy
fDate :
11/1/1998 12:00:00 AM
Abstract :
The diffraction of an inhomogeneous plane wave by an impedance wedge embedded in a lossy medium is analyzed. The rigorous integral representation for the field is asymptotically evaluated in the context of the uniform geometrical theory of diffraction (UTD) so that the asymptotic expressions obtained can be employed in a ray analysis of the scattering from more complex edge geometries located in a dissipative medium. Surface wave excitations at the edge and their propagation along the wedge faces are discussed with particular emphasis on the effects of losses
Keywords :
absorbing media; electromagnetic wave diffraction; electromagnetic wave scattering; geometrical theory of diffraction; integration; UTD; asymptotic expressions; complex edge geometries; dissipative medium; electromagnetic scattering; impedance wedge; inhomogeneous plane wave diffraction; losses; lossy medium; ray analysis; rigorous integral representation; surface wave excitations; uniform geometrical theory of diffraction; Costs; Electromagnetic analysis; Electromagnetic scattering; Geometry; Guidelines; Impedance; Microwave theory and techniques; Notice of Violation; Physical theory of diffraction; Physics computing;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
