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应用FDTD方法和PML技术 ,对馈电区一侧放置介质块的电阻加载偶极天线的时域辐射特性进行了研究 ,发现这种天线具有良好的方向性 .分析了加载介质块的尺寸和介电常数对脉冲辐射特性的影响 ,给出了能够产生良好方向性而且辐射效率又不至于很低的天线结构参数 .并联介质加载脉冲天线的低轮廓特点使其容易与电路集成 ,非常适用于UWB这样的超宽带无线通信系统 .
The FDTD method and the PML technique were used to study the time-domain radiation characteristics of the dipole antenna with resistive loading placed on one side of the feed zone, and found that the antenna has good directivity.Analyzed the size and medium The influence of electric constant on the pulse radiation characteristics is given, and the antenna structure parameters which give good directivity and low radiation efficiency are given. The low profile characteristic of the parallel medium loading pulse antenna makes it easy to integrate with the circuit and is very suitable for UWB Such an ultra-wideband wireless communication system.