摘要
60 m×20 m×10 m的大尺寸TEM天线的传输特性已有实验测量结果,但如此大天线还没有数值模拟报导。为了对超大尺寸的天线进行数值模拟,建立了一个同样大小的TEM天线模型,采用传输线矩阵(TLM)方法计算了其内部电场。在与试验测量值对比的基础上,试验获得了脉冲信号在天线中心截面的电场随时间变化的图形,并给出了天线的远场二维、三维辐射方向图和天线的回波损耗参数。模拟结果表明,TEM天线的参数特性由其结构决定。
The transmission characteristics of a Large Scale TEM antenna of 60 m×20 m×10 m are experimentally measured. However, no numerical simulation of such large scale antennas are reported up to now. In order to numerically simulate the large scale antenna, a TEM antenna model of the same size is established, and its internal electric field calculated with TLM (Transmission Line Matrix) method. Based on the comparison with the experimental measurements, the experimental results show the electric-field variation of the pulse signal with the time at the center of the antenna, and simultaneously, the far-field twodimensional and three-dimensional radiation patterns of the antenna and the return loss parameters of the antenna are also given. The simulation results indicate that the parametric characteristics of TEM antenna are determined by its structure.
作者
牟维兵
MU Wei-bing(Simulation Center, Institute of Computer Application, CAEP, Mianyang Sichuan 621900, China)
出处
《通信技术》
2019年第4期982-985,共4页
Communications Technology
关键词
TEM天线
数值模拟
TLM方法
电场
TEM antenna
numerical simulation
TLM method
electrical field
