Theory of a loop antenna located on the surface of a dielectric column in a magnetoplasma

Abstract

The electrodynamic characteristics of a circular loop antenna located coaxially on the surface of a dielectric column in a magnetoplasma are studied using the integral equation method. The antenna is excited by a time-harmonic voltage and has the form of an infinitesimally thin, perfectly conducting narrow strip coiled into a ring. The column axis is assumed to be aligned with an external static magnetic field. The problem is reduced to a system of integral equations for azimuthal harmonics of the antenna current. Using the singular properties of the kernels of the integral equations derived, the current distribution and input impedance of the antenna are found and analyzed in the case where the surrounding magnetoplasma admits the existence of electrostatic waves.