Metallic Shield Influence on the Resonant Length of a Wire Antenna
N.N. Gorobets & N.P. Yeliseyeva
V. Karazin National University of Kharkov,
4, Svoboda Sq., Kharkiv, 61077, Ukraine
«Address all correspondence to N.N. Gorobets
E-mail: Nikolay.N.Gorobets@univer.kharkov.ua
Abstract
The method of induced electromotive forces and the uniform geometric diffraction theory are in the base of the algorithm developed for calculation of the input impedance of the symmetric electric dipole located above the infinitely thin rectangular metal shield. Resonant arm length of the half-wave dipole resonant at which the reactive part of its input resistance equals to zero, is determined as a function of the dipole thickness, dimensions and shape of the shield for different dipole-to-shield distances and dipole orientation towards the shield. It is shown that the shield presence results in greater shortening of the dipole resonant length than in the case of the dipole in free space.
KEY WORDS: dipole, arm, shield, resonant length
References
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