The impedance of a short dipole antenna in a magnetoplasma
Keith G. Balmain
- Vol. 12, Iss: 5, pp 605-617
TLDR
In this article, a quasi-static electromagnetic theory for the impedance of a short cylindrical dipole in a magnetoplasma is derived using quasistatic electromagnetic theories, which is valid in a lossy plasma and for any dipole orientation with respect to the magnetic field.Abstract:
A formula for the impedance of a short cylindrical dipole in a magnetoplasma is derived using quasi-static electromagnetic theory. The formula is valid in a lossy plasma and for any dipole orientation with respect to the magnetic field. The dipole impedance is found to have a positive real part under lossless conditions when the quasi-static differential equation is hyperbolic; this indicates that the quasi-static theory predicts a form of radiation. It is shown that the quasi-static theory can be interpreted in terms of scaled coordinates and that a cylindrical dipole in a magnetoplasma has a free space equivalent with a distorted shape. A conductance correction term obtained from Langmuir probe theory is shown to be significant. Laboratory measurements of monopole impedance are compared with the theoretical calculations.read more
Figures
Figure 3.2.1 The source distribution 
Figure 3.3.2 The impedance of a non-uniform, isotropic plasma between parallel plates as a function of peak electron density. 
Figure 2.5.1 The co-ordinate system in the magnetoplasma 
Figure 2.3.2 The cylindrical co-ordinate system 
Figure 2.4.1 Radiation fields of a monopole 
Figure 2 2,4 Integration Contours
Citations
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References
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A. W. Trivelpiece,Roy W. Gould +1 more
TL;DR: In this paper, the effect of a steady axial magnetic field is considered, but motion of heavy ions and electron temperature effects are neglected, and the properties of these space charge waves have been investigated by regarding the plasma as a dielectric and solving the resulting field equations.
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R. W. Damon,J. R. Eshbach +1 more
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R. I. Joseph,E. Schlömann +1 more
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