Plasma-Dielectric Traveling Wave Antenna
- 作者: Artemenko A.1, Karlov V.2, Kirichenko Y.3, Lonin Y.3
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隶属关系:
- Ministry of Defence of Ukraine
- Kharkiv Air Force University
- National Science Center “Kharkiv Institute of Physics and Technology”
- 期: 卷 62, 编号 11 (2019)
- 页面: 585-593
- 栏目: Article
- URL: https://journals.rcsi.science/0735-2727/article/view/177389
- DOI: https://doi.org/10.3103/S0735272719110049
- ID: 177389
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详细
The paper investigates the efficiency of transformation of traveling wave into radiation in longitudinally inhomogeneous plasma cylinder. The plasma is limited by a dielectric shell of finite thickness. The investigation involves the use of the method of spectral field expansion in terms of a set of functions including the surface and spatial waves of plasma cylinder with dielectric shell. A system of integro-differential equations for expansion coefficients has been obtained. These coefficients determine the amplitudes of transmitted, reflected, and scattered waves and also radiation patterns (RP). The system of equations is solved for the case of strong longitudinal variation of plasma density. The relationships of the transformation coefficients of surface wave energy as a function of the plasma density gradient, electrical length of section of plasma inhomogeneity, the electric radius of plasma cylinder, dielectric permittivity, and the thickness of dielectric were calculated. The fraction of surface wave energy that is transformed into radiation at acute angles can amount to 35%. The resultant narrow-beam RPs have only one lobe. The radiation maximum fits into an angle of several degrees with respect to the direction of surface wave propagation. With an increase of plasma density gradient, the lobe width is reduced, while its position shifts to 0°. The impact of dielectric properties on radiation characteristics has been also investigated.
作者简介
A. Artemenko
Ministry of Defence of Ukraine
Email: Lonin@kipt.kharkov.ua
乌克兰, Kyiv
V. Karlov
Kharkiv Air Force University
编辑信件的主要联系方式.
Email: karlov@ukr.net
乌克兰, Kharkiv
Yu. Kirichenko
National Science Center “Kharkiv Institute of Physics and Technology”
编辑信件的主要联系方式.
Email: kiryuv51@ukr.net
乌克兰, Kharkiv
Yu. Lonin
National Science Center “Kharkiv Institute of Physics and Technology”
编辑信件的主要联系方式.
Email: Lonin@kipt.kharkov.ua
乌克兰, Kharkiv