Radiation from an axial electric dipole with prolate spheroidal metamaterial cloak cover
Exact analytical expressions for the electromagnetic field due to a dipole source located inside and along the axis of symmetry of a prolate spheroid are provided.
Exact dipole radiation for an oblate spheroidal cavity filled with isorefractive material and aperture-coupled to a half space
An oblate semi-spheroidal cavity flush-mounted under a metal plane and coupled to the half-space above it via its circular interfocal aperture is considered. The cavity is filled with a material isorefractive to the medium that occupies the half-space above it. An exact solution is obtained for the radiation of an electric or magnetic dipole located on the symmetry axis of the structure, either outside or inside the cavity, and axially oriented. Numerical results are provided.
NUMERICAL ANALYSIS OF PENETRATION, RADIATION, AND SCATTERING FOR A 2D SLOTTED SEMIELLIPTICAL CHANNEL FILLED WITH ISOREFRACTIVE MATERIAL
Electromagnetic penetration through an aperture into a cavity is considered. The structure of interest comprises a slotted infinite conducting plane backed by a semielliptical channel. Three independent integral equations are used to study the structure of interest,for which analytical expressions are derived in another paper and involve summations of Mathieu functions. Numerical results from the analytical expressions for the electromagnetic fields are compared with those from integral equation methods for various cases of excitation and isorefractive materials. The agreement is excellent in all cases.