对数周期阵列天线低频增益优化仿真分析

Simulation Analysis on LPDA Low Frequency Gain Optimization

利用计算机电磁仿真软件,通过仿真试验结果分析,对小型对数周期阵列辐射抗扰测试天线进行低频段(60~200 MHz)增益补偿。优化后的小型对数周期阵列辐射抗扰测试天线测试数据与仿真预期基本相符。仿真数据和实际测试数据表明:优化后的小型对数周期阵列天线从60 MHz频率开始具有良好的电场特性,可以有效运用于汽车零部件和子系统的辐射抗扰测试。

In this article, an optimized low frequency gain（from 60-200 MHz） of a small log periodic dipole array antenna-（ LPDA ） is presented from the simulation results of the High Frequency Structure Simulator （HFSS） software. The actual resuhs of the optimized small dual stacked LPDA match simulation expectation. Both results prove that this optimized LPDA can apply to the immunity testing for automotive components and sub-system and has a good performance in E-field characteristic from 60 MHz.