一种改进FDTD仿真准确性的等效宽度技术  

An Improved Accurate FDTD Simulation Technique Using Relatively Coarse Mesh

作　　者：周百新[1] 苗润兴[2] 王思聪[1] 

机构地区：[1]南京师范大学电气与自动化工程学院,江苏南京210042 [2]新华日报报业集团印务中心,江苏南京210092

出　　处：《南京师范大学学报（工程技术版）》2008年第3期6-10,共5页Journal of Nanjing Normal University(Engineering and Technology Edition)

基　　金：南京师范大学"211"学科建设基金(1843202529)资助项目

摘　　要：提出了一种改进FDTD(Finite Difference Time Domain)仿真结果的等效宽度技术,它通过对仿真对象的尺寸进行加权修正,即使在使用粗网格进行FDTD仿真时也能得到准确的结果.同时对FDTD仿真时节省运算时间和存储空间也具有非常实用的价值.并通过对均匀微带线的特性阻抗和贴片天线、低通滤波器的散射系数的计算验证了这一理论.In this paper, a fast convergent technique was presented. An improved accurate FDTD （ Finite Difference Time Domain） simulation result could be generated using a relatively coarse mesh for PEC planar structures if an effec- tive factor is properly selected. It is very valuable because the calculating time and space could be decreased when FDTD simulation is done. A microwave patch antenna and a low pass filter were used in this paper to verify the proposed scheme.

关 键 词：FDTD仿真 理想导体 均匀微带线 

分 类 号：O441.5[理学—电磁学]