Abstract:

The physical model of the plasma antenna with plasma-insulating tube-vacuum is established. Then the new dispersion relation is derived. Through the geometric interpretation, a new algorithm with high precision and fast convergence is presented. Simulation results verify the correctness and effectiveness of the conclusion. The dispersion relation of cylindrical plasma antenna is studied when the electron density decreases according to the linear law. And the radiation pattern is given. The results have important reference value in analysis and design of the plasma antenna.

Key words: Plasma antenna, Dispersion relation, Fast algorithm

摘要：

建立了等离子体-绝缘管-真空结构的等离子体天线物理模型，推导了新的色散关系方程，通过几何诠释，给出了一种新的高精度快速收敛求解方法，计算机仿真验证了结论的正确性和有效性。利用算法研究了当电子密度按线性律减小时，圆柱等离子体天线的色散关系，并绘制了方向图。这些结果对等离子体天线的分析与设计具有重要的参考价值。

关键词: 等离子体天线, 色散关系, 快速算法