摘要
金属在“超颖物质”中有重要应用,分析和仿真金属介质很有意义.对比了时域有限差分(FDTD)中金属介质的三种计算方法:ADE(Auxiliary Differential Equation),PLRC(Piecewise Linear Recursive Convolution)和Sakoda提出的方法.通过数值验证,发现ADE和PLRC的数值结果完全相同.Sakoda的方法在计算卷积时采用台阶近似,有一定误差.改进Sakoda方法的卷积计算后,结果与其他两种方法完全相同.
There are important applications of metal in metamaterials. Three methods for dealing with metal in FDTD are analyzed and compared. ADE （auxiliary differential equation method） and PLRC （piecewise linear recursive convolution） have the same numerical result. However, there is a little difference between Sakoda＇ s method and ADE. It is due to the error in calculation of convolution integral with Sakoda＇ s method. Improving the convolution integral with the method used in PLRC, these three methods give the same results.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第7期4252-4255,共4页
Acta Physica Sinica
基金
教育部科学技术重点项目(批准号:105101)
山东省自然科学基金(批准号:31170005200605)资助的课题.~~
