New proposed spherical slotted antenna covered by the layers of dielectric material and plasma

Abstract

The operation of the new proposed spherical slotted antenna covered by layers of dielectric material and plasma was analyzed numerically in this paper. By utilizing the Integra-functional equations method, the optimum thickness of dielectric material layer and suitable conditions which improve the operation of this antenna are analyzed here by MATHCAD. The thickness of dielectric layer must not be less or more than λ/6. Furthermore, the authors propose manipulating the operation frequency to enable such antenna to work in most circumstances.

A nested square-shape dielectric resonator for microwave band antenna applications

“…In particular, a DRA can be made ten times smaller by scaling the permittivity from 10 to 100. Another important feature of DRAs is the potential for achieving a wider impedance bandwidth, which is due to the direct dependence of the impedance bandwidth on the permittivity of the resonator [4][5][6]. To meet the demands of modern communication systems, it is necessary to reduce the size of the antenna while maintaining a wide impedance bandwidth as well as stable radiation characteristics [7][8][9][10][11].…”