HFSS天线仿真在电磁兼容预测中的应用

Appliance of HFSS Antenna Simulation in EMC Prediction

在设计电磁兼容预测软件时,采用天线的数据模型可以更全面地反应天线的辐射特性,这需要已知天线的方向图数据。但实际工作中,很多收发设备不能提供天线实际的方向图数据,而使用典型方向图数据引入的误差太大,为了提高电磁兼容预测的准确度,文章提出采用HFSS软件仿真来获取天线方向图的方法,并通过对常用的双脊波导喇叭天线与对数周期天线进行仿真,证实了仿真出的天线方向图基本与天线的实际特性符合。

In the design of EMC prediction procedure,the modeling of antenna is realized by data model because it can conclude the radiation properties of antenna.So the directivity of antenna is needed,but actually the radiation patterns cannot be provided in many equipment with receive antennas or transmitting antennas.If using typical radiation patterns the errors are too big.In order to improve the accuracy of EMC prediction,HFSS software to simulate antenna radiation patterns is adopted in this paper.Through the simulation of double ridged waveguide antenna and the log-periodic antenna,the simulate result correspond with the actual characteristics of the antennas is confirmed.