Radiation from a radial dipole through a thin dielectric spherical shell

The radiation from and the reaction on a radial dipole placed inside a thin dielectric spherical shell are investigated. Numerical results have been obtained for the gain pattern and the impedance change of an elementary dipole. The nearer the center of the shell the dipole is placed, the less the pattern is found to be influenced by the shell, the opposite being the case for the impedance of the dipole.