新型短波通讯天线的计算机仿真

Numerical Simulation of a Novel Antenna for Short Wave Communication

作者研究了一种通讯短波宽带共形线天线，并利用时域有限差分算法（FDTD）仿真计算，经过优化和匹配电路的加载，得出天线在短波10-90MHz频率下的反射系数、输入阻抗、电压驻波比、辐射方向图。在决定匹配电路参量过程中使用了最优搜寻法和梯度法。该天线具有小型宽带、平面共形特点，可加载于车辆、低速飞机等移动载体上。

This paper presents a short wave wide band conformal communication antenna,and simulates the antenna with the Finite-Difference Time-Domain Method(FDTD).After a series of optimization and the matched circuit,the reflect coefficient,input impedance,SWR and radiation patterns of the antenna are obtained.In the process of determining the parameters of the matched network,both random and gradient optimization methods are adopted.This antenna has characteristics of miniature,wide band,conformal to plane and it can be used on vehicle-mounted and flight-mounted carriers etc.