摘要
基于传统的阶梯式均匀传输线逼近模型,对非均匀传输线进行分段指数逼近。同时,对于每一离散段,采用驻波变换,将相应的变系数偏微分方程变换为常系数偏微分方程,进而利用中心差分公式,得到可用于非均匀多导体传输线瞬态分析的改进时域有限差分算法。通过与传统处理方法的比较,验证了所提算法的有效性,并将其应用于外均匀传输线的研究。
Based on the conventional ladder model, the exponential model is adopted to approach the nonuniform transmission lines. For each discrete segment, the stationary wave transform is applied to transform the partial differdenial equation of variational coefficients to that of ordinary coefficie-nts. By using the central difference approximations, the iterative formulas of the finite difference time domain (FDTD) method are obtained. Compared with the traditional method, the method proposed is demonstrated to be effective and finally used to research the nonuniform transmission lines.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2003年第7期102-106,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50077006)
教育部高等学校优秀青年教师建立基金计划
教育部高等学校骨干教师资助计划共同资助。~~
关键词
时域有限差分法
非均匀多导体传输线
瞬态分析
输电线路
Nonuniform transmission lines
FDTD (finite difference time domain)
Stationary wave transform
Exponen-tial approximation
