Vivaldi超宽带天线时域特性的FDTD分析  

Time-domain characteristics FDTD analysis on Vivaldi UWB antenna

作　　者：边莉[1] 黄玉琴[2] 吴群[1] 

机构地区：[1]哈尔滨工业大学电子与信息技术研究院,哈尔滨150001 [2]黑龙江科技学院电气与信息工程学院,哈尔滨150027

出　　处：《黑龙江科技学院学报》2007年第6期448-451,455,共5页Journal of Heilongjiang Institute of Science and Technology

基　　金：黑龙江省教育厅项目(11521251)

摘　　要：针对典型Vivaldi超宽带天线时域特性分析较难的问题，设计了适用于3．1—10．6GHz的Vivaldi天线，并利用时域有限差分算法（FDTD）进行建模和计算。仿真结果表明，该Vivaldi天线电场信号的脉冲延续时间约为0.5ns，振铃效应较小，高频部分比低频部分相位失真严重。FDTD分析为该天线校正相位、改进消除波形失真的方法提供了理论依据。Aimed at addressing the more difficult analysis of the time-domain characteristics of the Vivaldi antenna, the paper introduces the design of the geometry size of Vivaldi UWB antenna in case of 3.1-10.6 GHz frequency wave bands. The FDTD model of the Vivaldi antenna is built, and the timedomain characteristics is analyzed by using the FDTD. The electrical field signal of the specific Vivaldi antenna shows a pulse delay time is about 0.5 ns, and offers a less ringing effect. The high frequency part gives a more severe phase distortion than low frequency part does. FDTD analysis presents the theoretical basis for correcting the Vivaldi antenna phase and removing the waveform distortion.

关 键 词：Vivaldi超宽带天线 时域特性 FDTD 相位失真 

分 类 号：TN822.8[电子电信—信息与通信工程]