多端口耦合问题的等效导纳矩阵

本文提出了一种处理多端口耦合问题的有效方法。在该问题中,各端口波导分别通过一耦合孔与耦合区进行耦合。利用矩量法,首先导出了多端口耦合问题的关于传输模和截止模的等效导纳矩阵的计算公式。在此基础上,考虑到截止模加载于端口波导的特性阻抗,经过适当的矩阵运算,得到仅仅关于传输模的等效导纳矩阵。用此方法计算了一个 H 面 T 形接头的等效导纳矩阵和等效电路参数,所得结果与文献1]们的结果非要吻合。

The Equivalent Admittance Matrices For Multi-port Coupling Problems

An efficient method to treat multi-port coupling problems in which every in/out-put waveguide is coupled with a public region through an aperture respectively is given in this paper.Firstly,a general formu- lation for equivalent admittance matrix relating propagating modes and cutoff modes to each other is derived by the method of moments for the multi-port coupling problems.Then considering that cutoff modes are terminated in their characteristic impedances,the equiva- lent admittance matrix relating only with propagating modes to each other is obtained through appropriate matrices operation.This me- thod is employed to calculate the equivalent admittance matrix and the equivalent circuit parameters of a H-plane T-junction rectangular waveguides.The results are in coordination with that of J] very well.