Radiation from a gyro-plasma sheathed aperature

Author

Hodara, H.

Author_Institution

The Hallicrafters Co., Chicago, IL, USA

Volume

11

Issue

1

fYear

1963

fDate

1/1/1963 12:00:00 AM

Firstpage

2

Lastpage

12

Abstract

It is shown that the presence of a gyrotropic plasma sheath covering a rectangular slot radiator may not alter significantly the radiation pattern when the static magnetic field is perpendicular to the slot. The plasma covered antenna remains omnidirectional and the radiated power is not significantly reduced when the cyclotron frequency $\\omega _{b}$ , the collision frequency $\\nu$ , and the operating frequency $\\omega$ , fulfill the inequality $\\omega _{b}^{2}\\gg\\omega ^{2}+\\nu^{2}$ . It is also found that the matching between the plasma covered antenna and its surrounding is sharply improved for certain combinations of the plasma sheath parameters and the operating frequency. This finding may have an application in plasma diagnostics, the slab width $L$ and the plasma frequency $\\omega _{p}$ can be determined by varying $\\omega _{i}$ and $\\omega$ according to an expression derived in this paper.

Keywords

Plasma-covered antennas; Slot antennas; Anisotropic magnetoresistance; Apertures; Fourier transforms; Frequency; Geometry; Gyrotropism; Magnetic fields; Partial differential equations; Plasma sheaths; Plasma waves;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.1963.1137976

Filename

1137976