Transmission line theory of antenna impedance in a magnetoplasma

Abstract

Transmission line theory for the impedances of wire antennas immersed in a cold magnetoplasma is proposed. The theory is applicable to antennas which are not necessarily small in terms of a wavelength measured along the antenna wire. The transmission line theory for the impedance of a very thin cylindrical dipole antenna leads to the Balmain quasi-static theory when the antenna length reduces to zero. New impedance resonances which would be observed for antennas of finite length in a magnetoplasma in the frequency region below and near the electron cyclotron frequency are predicted by the present theory.

Electrodynamic Characteristics of a Strip Antenna Located on a Plane Interface of a Resonant Magnetoplasma and an Isotropic Medium

“….) in cases where the quantity h is real [5]. The nonzero value of the imaginary part of h is due to the fact that the loss for radiation of small-scale quasielectrostatic waves [1,4] to the half-space y < 0 filled with a resonant magnetoplasma was taken into account when Eq.…”

“…Interest in this problem is due, in particular, to the wide use of antenna systems in different experiments conducted in the space and laboratory plasmas. Most of the theoretical papers on the subject consider the antennas located in a homogeneous magnetoplasma (see, e. g., [5][6][7][8]). Recently, increased attention has been paid to the study of antenna characteristics in inhomogeneous plasma media [4,[9][10][11].…”

Antenna analysis in magnetized plasma via particle-in-cell simulation

“…Balmain, 1964;Adachi et al, 1977;Sawaya et al, 1976). However, the analysis of the antenna characteristics such input impedance is very complex because plasma is dispersive and anisotropic medium.…”

Current Distribution and Input Impedance of a Strip Loop Antenna Located on the Surface of a Circular Column Filled With a Resonant Magnetoplasma

“…In most papers on the subject, dipole and loop antennas in a homogeneous plasma medium are considered [1][2][3][4][5][6][7][8][9][10]. By resonant magnetoplasma, we mean a cold, collisionless magnetized plasma in which the refractive index of one of the characteristic waves tends to infinity when an angle between the wave normal direction and an external dc magnetic field approaches a certain value determined by the plasma parameters.…”