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2015-02-24
Electrodynamic Characteristics of a Radial Impedance Vibrator on a Perfect Conduction Sphere
By
Progress In Electromagnetics Research B, Vol. 62, 137-151, 2015
Abstract
A problem of the spherical antenna consisting of a thin radial monopole located on a perfectly conducting sphere is solved. The antenna is excited at the base by a voltage δ-generator. An approximate analytical solution of the integral equation for the current on a thin impedance vibrator was found by the method of successive iterations. The solution is physically correct for arbitrary dimensions of the spherical antenna and for any value of surface impedance distributed along the monopole. The validity of the problem formulation is provided by using the Green's function for the Hertz vector potential in unbounded space outside the perfectly conducting sphere and by writing the initial integral equation for the current on the monopole. Influence of the monopole dimensions and surface impedance upon the radiation characteristics and the input impedance of the spherical antenna is studied by numerical evaluations using zero order approximation. The input impedance of the monopole was determined by the method of induced electromotive forces (EMF) using the current distribution function thus obtained.
Citation
Dmitriy Yu. Penkin, Victor A. Katrich, Yuriy M. Penkin, Mikhail Nesterenko, Victor M. Dakhov, and Sergey L. Berdnik, "Electrodynamic Characteristics of a Radial Impedance Vibrator on a Perfect Conduction Sphere," Progress In Electromagnetics Research B, Vol. 62, 137-151, 2015.
doi:10.2528/PIERB14120102
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