并联介质加载偶极天线脉冲辐射特性的研究  

Study on the radiation characteristics of the dielectric parallelly loaded dipole antenna for pulse radiation

作　　者：韩增富[1] 王均宏[1] 

机构地区：[1]北京交通大学光波技术研究所北京交通大学全光网络与现代通信网教育部重点实验室,北京100044

出　　处：《物理学报》2005年第2期642-647,共6页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :60 4710 5 3 );教育部优秀青年教师资助计划资助的课题~~

摘　　要：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 time-domain radiation characteristics of the resistance-loaded dipole antenna with dielectric block parallelly connected to one side of the feeding region are studied by using finite difference time-domain(FDTD) method and perfectly matched layer (PML) technique. It is found that this kind of antenna has very well directive property. The influences of the size and dielectric constant of the loaded dielectric block on the radiation characteristics of the antenna are analyzed. The optimum structure parameters of antennas with very well directivity and enough efficiency are given. The low profile property of this kind of antenna makes it easier to integrate with circuit. It is preferable for the ultra-wide band wireless communication system, such as UWB system, to use this kind of antenna.

关 键 词：天线结构 辐射特性 偶极 超宽带无线通信 UWB FDTD方法 馈电 介质 脉冲 并联 

分 类 号：TN820[电子电信—信息与通信工程]