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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。
In this paper, we propose an efficient method to deal with the problem of multi-port coupling. In this problem, the port waveguides are respectively coupled to the coupling region through a coupling hole. Using the method of moment, the equivalent admittance matrix of the transmission mode and the cutoff mode of multi-port coupling problem is first derived. On this basis, taking into account the characteristic impedance of the cutoff mode loaded on the port waveguide, the equivalent admittance matrix about the transmission mode is obtained through proper matrix operation. Equivalent admittance matrix and equivalent circuit parameters of a H-plane T-junction are calculated by this method. The results obtained are in good agreement with the results in [1].