摘要
从泰勒级数法出发推出直角坐标系下电磁场纵横关系的亥姆霍兹方程的差分公式,实例分析了对称双脊波导的电磁场场域、截止频率,并分析了非对称双脊波导结构的变化对截止频率的影响。计算结果表明,有限差分法是分析脊波导的一种有效方法。
In this paper, the difference formula of two-dimensional Helmholtz equation associated is de- rived, the electromagnetic field and cutoff frequency of symmetrical double-ridge waveguide are presented, and the effects of the structure to the cutoff frequency of the dissymmetrical double-ridge waveguide were given firstly. The results show that ： the finite difference method is an effective approach for the analysis of the elec- tromagnetic wave transmission characteristics in the double-ridge waveguide.
出处
《陕西理工学院学报（自然科学版）》
2013年第6期11-15,共5页
Journal of Shananxi University of Technology:Natural Science Edition
基金
陕西理工学院重点科研项目(SLGKY12-02)
关键词
有限差分法
双脊波导
截止频率
finite-difference method
double-ridge waveguide
cutoff frequency
