Two-element cylindrical antenna in a warm plasma

Morita, Y.

doi:10.1080/00207218608920842

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1989

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“…Therefore we have decided to use the inductive reactance as a lumped load suitable for effective control of electron plasma wave radiation. Although the hydrodynamic approach is used in this analysis instead of kinetic theory, Landau damping is introduced to account for the effect of the feeder according to the previous results lEgashira and Morita, 1986;Morita, 1986]. Experiments have also been performed to confirm the theoretical results.…”

Section: Introductionmentioning

confidence: 98%

Loaded two‐element ring antenna for electron plasma waves

Morita¹,

Egashira²,

Honjoh³

1989

Radio Science

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A short, coil-loaded two-element ring antenna including a transmission line, immersed in a warm, isotropic plasma, is investigated as a boundary value problem in the frequency range where electron plasma waves exist. The wave potential of electron plasma waves launched from a two-element ring antenna has been enhanced by a factor of 4-6 in comparison with the case of an unloaded one-element ring antenna, when a suitable inductive load is inserted at the feeding point of element 2, and the distance between element 1 and element 2 is chosen as an optimum element spacing. Theory is substantiated by the experiments. In addition, the unidirectional radiation patterns of the antenna for electron plasma waves are predicted by the present theory.

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Section: Introductionmentioning

confidence: 98%