An Improved Unconditionally-Stable FDTD Method Based on the Split-Step Scheme with low dispersion

摘要：

An improved unconditionally-stable finite-difference time-domain (FDTD) method based on the split-step scheme is presented, which provides low numerical dispersion. Firstly, symmetric operator and uniform splitting are adopted to split the matrix derived from the classical Maxwells equations into four sub-matrices. Simultaneously, two controlling parameters are introduced to decrease the numerical dispersion error. Accordingly, the time step is divided into four sub-steps. Secondly, theoretical proof of the unconditional stability is given. Thirdly, the process of obtaining the controlling parameters is shown. In addition, the error of the numerical dispersion can be decreased significantly. Finally, numerical experiments are presented to substantiate the proposed method.

作者: Yong-Dan Kong Qing-Xin Chu

作者单位: School of Electronic and Information Engineering, South China University of TechnologyGuangzhou Guangdong 510640, China

会议类型: 国际会议

会议名称: 第九届国际天线、电波传播及电磁理论学术研讨会(ISAPE2010)

会议地点: 广州

会议语种:英文

页码: 1-4

在线出版日期: 2010-11-29（万方平台首次上网日期，不代表论文的发表时间）