Title :
Doubly diffracted ray from a hard quarterplane
Author :
Albertsen, N.Chr.
Author_Institution :
Dept. of Math. Modeling, Tech. Univ. Denmark, Lyngby, Denmark
fDate :
5/1/2000 12:00:00 AM
Abstract :
The scattering of the electromagnetic field from a half wave dipole source around a quarterplane can be calculated from the solutions to two scalar problems, one with a soft quarterplane and one with a hard quarterplane. In both cases, a doubly diffracted ray may exist, but only in the case of the hard quarterplane does this present a problem. The paper develops the necessary transition functions for the diffraction coefficients from the exact wave solution
Keywords :
acoustic wave diffraction; electromagnetic fields; electromagnetic wave diffraction; electromagnetic wave scattering; acoustical rays; diffraction coefficients; doubly diffracted edge rays; doubly diffracted ray; electromagnetic field scattering; exact wave solution; geometrical theory of diffraction; half wave dipole source; hard quarterplane; scalar problems; scattered field; soft quarterplane; transition functions; uniform asymptotic expansion; Electromagnetic diffraction; Electromagnetic fields; Electromagnetic scattering; Geometry; Helium; Mathematical model; Performance evaluation; Physical theory of diffraction;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
