等离子体通道天线的辐射场计算

核聚变与等离子体物理 ›› 2010, Vol. 30 ›› Issue (1): 30-36.

等离子体通道天线的辐射场计算

夏新仁，尹成友

(脉冲功率激光技术国家重点实验室，合肥电子工程学院，合肥 230037)

收稿日期:2009-01-12 修回日期:2009-07-22 出版日期:2010-03-15 发布日期:2010-05-11
作者简介:夏新仁(1976–)，男，安徽当涂人，博士，工程师，目前主要从事电磁场数值计算与等离子体天线等的研究工作。
基金资助:
国家自然科学资金资助项目(60671057)

Numerical calculation of radiation pattern of plasma channel antenna

XIA Xin-ren, YIN Cheng-you

(State Key Laboratory of Pulsed Power Laser Technology, Hefei Electronic Engineering Institute, Anhui, Hefei 230037)

Received:2009-01-12 Revised:2009-07-22 Online:2010-03-15 Published:2010-05-11

摘要/Abstract

摘要： 提出了一种用于高功率微波武器的等离子体通道天线(PCA)，计算了该天线的辐射方向图。推导出了一般性天线的辐射方向函数；建立了PCA的近似电磁模型；给出了圆坐标系下PCA和周围空气中的电磁场，利用边界条件得出了PCA的色散方程，求出PCA的表面波波矢。重点讨论了PCA的辐射场随等离子体密度、天线长度、半径的变化，证实了PCA方向图的可控性。

关键词: 等离子体通道天线, 辐射方向图, 色散方程

Abstract: The idea of plasma channel antenna (PCA) for high power microwave weapon is presented in this paper. The radiation pattern of PCA is calculated. The directivity functions of general antenna are derived. The near electromagnetic model of PCA is created based on physical circumstances. The electromagnetic fields of PCA and surrounding air in cylindrical coordinate are given. The dispersion equation of PCA is deduced by applying the boundary conditions of electromagnetic fields. The surface wave vector of PCA is achieved. The variations of radiation characteristic with plasma density, antenna length and antenna radius are emphatically discussed. The controllability of PCA’s radiation patterns is confirmed.

Key words: Plasma channel antenna, Radiation pattern, Dispersive equation

中图分类号:

TN136

夏新仁，尹成友. 等离子体通道天线的辐射场计算[J]. 核聚变与等离子体物理, 2010, 30(1): 30-36.

XIA Xin-ren, YIN Cheng-you. Numerical calculation of radiation pattern of plasma channel antenna[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2010, 30(1): 30-36.

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