Accession Number : AD0633726

Title :   RADIATION AND DIFFRACTION OF ELECTROMAGNETIC FIELDS IN ANISOTROPIC MEDIA.

Descriptive Note : Interim research rept.,

Corporate Author : POLYTECHNIC INST OF BROOKLYN N Y MICROWAVE RESEARCH INST

Personal Author(s) : Rosenbaum,Shalom

Report Date : 25 FEB 1966

Pagination or Media Count : 215

Abstract : This work deals with the radiation from two-dimensional time-harmonic source distributions embedded in a transversely unbounded region filled with a uniaxially anisotropic medium; the optic axis is permitted to be inclined at an arbitrary angle with respect to the z-direction of stratification. The problem incorporates non-reciprocal effects with respect to the z-axis (lack of reflection symmetry) as well as mode coupling at planar discontinuities and in the source region. Three types of discontinuities are considered: (a) perfectly conducting infinite plane, (b) a dielectric interface, (c) a perfectly conducting half plane. A guided mode technique is employed for the rigorous analysis of the boundary value problems, and special attention is paid subsequently to the asymptotic (short wavelength) limit which enables one to extract from the exact results invariant, ray-optical forms. Since the range of validity of the latter is broader than the special class of configurations from which they are derived, an extensive and direct use of ray techniques is suggested in more general anisotropic environments.

Descriptors :   (*ELECTROMAGNETIC FIELDS, *DIFFRACTION), (*ELECTROMAGNETIC RADIATION, FIELD THEORY), OPTICS, BOUNDARY VALUE PROBLEMS, DIELECTRICS

Subject Categories : Electricity and Magnetism
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE