基于有限差分法的方同轴线的研究  

Research on square coaxial line based on finite difference method

作　　者：尹治强[1] 谢扩军[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《现代电子技术》2012年第15期173-175,共3页Modern Electronics Technique

摘　　要：有限差分法是一种微分方法,是历史最悠久和理论最完整的数值分析方法。通过理论推导所求区域满足的偏微分方程和边界条件,然后在Yee网格中利用二阶有限差分法导出偏微分方程的差分格式,最后通过Matlab仿真出所求区域的电场分布和计算出方同轴线的特性阻抗。Finite differential methods （FDM） are numerical methods for approximating the solutions to differential equa- tions, which are the oldest and the most complete theory. In this paper, firstly partial differential equations and boundary con- ditions of square coaxial line are derived by means of theoretical derivation. Secondly, the differential form of the partial differential equations is derived from second order differential methods. Finally, the electric field distribution is simulated by Matlab, and characteristic impedance of square coaxial line is calculated by FDM.

关 键 词：方同轴线 有限差分法 电场分布 特性阻抗 

分 类 号：TN06-34[电子电信—物理电子学]