圆柱体上爬行波场分析及电磁兼容性设计应用

Analysis of the diffraction field on conductive cylinder and applications of electromagnetic compatibility designing

航空器上天线间辐射干扰问题的解决是系统正常通讯的保证。文章针对各种航空器的典型结构模型 -圆柱体进行研究 ,应用几何绕射理论分析了圆柱体上爬行波场的分布规律 ,包括固定收发天线位置 ,频率变化时爬行波场分布规律和固定天线工作频率改变收发天线相对位置时场的分布规律。所得结论为解决航空器上天线系统空间布局的电磁兼容问题提供了设计依据 ,也为定量地预测天线间隔离度提供了有效手段。

It is important to solve the problem of isolating between antennas for communication system on aircraft.This paper establishes the model of fuselage as conductive cylinder which is the typical geometry of many aircraft.The laws of diffraction field for source and observation points on cylinder are analyzed with the geometry theory of diffraction, includeing the laws of diffraction field when the position of antennas is fixed with frequency changing, and when the frequency of antennas is fixed with the position. Design guidelines are provided for solving the electromagnetic compatibility problem of antennas space location distributing on aircrafts.And an effective method is provided to predict the antennas coupling quantitatively.