An experimental and theoretical study of the monopole embedded in a cylinder of anisotropic dielectric

The characteristics of a monopole antenna embedded in an anisotropic cylinder of semi-infinite length were studied. The anisotropic medium was created artificially by thin layers of lossless material whose dielectric constant alternated between two values, 15.0 and 1.06. A theoretical and experimental analysis was carried out for the axially anisotropic (uniaxial) orientation of the dielectric medium with curves shown for input admittance and current distribution. An experimental investigation was also carried out for the radially anisotropic orientation with measurements made for the input admittance, axial charge distribution, and the angular and axial current distributions.