折线振子天线的时域有限差分法分析  

Analysis of Meander Line Antenna Using Finite-Difference Time-Domain Algorithm

作　　者：蒋立辉[1] 陈妹[1] 党涛[2] 郑宏兴[3] 

机构地区：[1]中国民航大学通信与信息处理研究所,天津300300 [2]四川九洲电器集团有限责任公司第一研究所,四川绵阳621000 [3]天津工程师范学院电子工程系,天津300222

出　　处：《中国民航大学学报》2008年第2期29-32,共4页Journal of Civil Aviation University of China

基　　金：天津市应用基础及前沿技术研究计划(07JCYBJC16800)

摘　　要：研究了在手机和掌上电脑等移动通信终端上应用的平面折线振子天线,用三维变换方向隐式时域有限差分法(ADI-FDTD)进行仿真。利用各向异性参数得到改进的ADI-FDTD方法,并给出计算公式便于提高计算效率和精度,对新算法的稳定性、色散关系及参数的选取进行了研究。然后用这种方法研究了平面折线振子天线的反射系数、电压驻波比和带宽等特性,得到一些有参考价值的结论。In order to develop new antennas used for hand set such as both Mobile phone and Personal Digital Assistant,a meander line structure is investigated in this paper. The three-dimensional alternating-direction implicit finite-difference time-domain（ADI-FDTD） method is applied to simulating the complex structure. By making use of anisotropy parameters, we get modified ADI-FDTD. And the equations have been proposed so that the computational efficiency and precision can be increased. Then the stability,dispersive relation,and selection of additional parameters of the proposed algorithm have been studied. Finally,using the new method,reflecting coefficient,voltage standing wave ratio ,and bandwidth of the meander line antenna have been calculated,some characteristics of the antenna are discussed,and significant results are obtained.

关 键 词：平面折线振子天线 时域有限差分方法 各向异性系数 数值色散 

分 类 号：TN821[电子电信—信息与通信工程]