The electromagnetic radiation and scanning characteristics of circular ferrite disc loaded with metallic discs

Theoretical analysis for a new wide angle scanning antenna is proposed in which the radiation characteristics of a metallic loaded ferrite disc are studied. The scanning mechanism is explained using the concept of surface waves. The equivalence principle is utilized to characterise the radiation in which surface electric density distribution in the metallic discs and polarization current inside the ferrite volume are considered. Exact field solutions obtained from the Helmholtz equation and Maxwell´s equations are used to quantify these current densities in the proposed antenna. The resultant radiation is obtained by superposing the fields obtained from the surface current density and the magnetization current density independently. The details of the entire investigations