基于FDTD的相控微带天线阵设计与分析  

Design and Analysis of Phased Array Microstrip Antennas Based on Empire

作　　者：车仁信[1] 程鑫[1] 

机构地区：[1]大连交通大学电气信息学院,大连116028

出　　处：《微波学报》2006年第3期23-27,共5页Journal of Microwaves

基　　金：铁道部专项资助项目(编号J2000Z052);辽宁省教育厅科学研究计划资助项目(编号2004D024)

摘　　要：针对相控微带天线阵设计、分析过程的复杂性,提出了用时域有限差分法(FDTD)对微带天线阵进行建模,用仿真软件Emp ire获取数据,结合直线阵理论和传输线理论导出相应的公式,用M atlab进行数据处理的设计、分析方法。用该方法设计了一个七单元相控微带天线直线阵。优化设计后,分析了动态反射系数、方向图等。通过实例将该方法分析结果与仿真曲线进行了对比,其吻合程度验证了该方法的准确性。研究表明,这种方法有利于相控微带天线阵的快速设计。Due to the complexity of the design and analysis on phased array microstrip antennas, a new method is put forward in the paper. The model is constructed by using finite-different time-domain （FDTD） method, and the data are obtained with software Empire. Combined with the linear array theory and the transmission line theory, the relevant formulas are deduced and the data are processed with Matlab. A linear array consisting of seven phased microstrip patch cells is designed by the method, and some parameters such as dynamic reflection and radiation pattern etc. are analyzed after optimizing. The analysis results are compared with simulation curves through a practical sample and the accuracy of this analytical method is showed. Our study shows that the method is useful for rapid designing and analyzing phased array microstrip antennas.

关 键 词：相控微带天线阵 Empire软件 反射系数 方向图 

分 类 号：TN822[电子电信—信息与通信工程]