Radiation Pattern of Spherical Slotted Antenna Coated by Dielectric Material and Plasma

The interaction of the radio emission of the spherical slotted antenna coated by a dielectric material and a layer of plasma is analyzed numerically in this paper. By utilizing the Integra-functional equations method, the influence of plasma layer as a density and the influence of the dielectric shelter tangent are analyzed by MATHCAD. It is found that these parameters (plasma density and tangent dielectric cover) can cause in general changes in the directivity of the pattern and in special values can cause changes in the level of the radiation pattern.