摘要
实际地面对短波对数周期天线(log-periodic dipole antenna, LPDA)阵列特性的影响,不能用镜像法分析.介绍了Sommerfeld积分,给出了近似镜像法分析时的水平极化扇形LPDA阵列的方向图函数;针对一个2×4的阵列,利用Matlab编程,计算了阵列的电特性,并就干地与湿地2种情形进行了比较;实践表明:理论分析与计算结果对短波LPDA阵列的布局具有一定的指导意义.
Image methods cannot be used to analyse the influence of the real ground on short wave LPDA arrays. The Sommerfeld integral is introduced and the directional function of horizontal polarized fan shaped LPDA arrays is given by the method of approximate image method. Electronic characteristics of a 2×4 array is calculated by Matlab code, and the results of dry and wet ground are compared. The theoretic analysis and results can be instructive on designing short wave LPDA arrays.
出处
《装备指挥技术学院学报》
2003年第6期75-78,共4页
Journal of the Academy of Equipment Command & Technology
