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本文先把双Y结环行器的电磁场问题当作一个对称非互易结六端口网络来处理,求出该网络的阻抗矩阵,利用各端口场匹配原理,求出对称三端双Y结的三个阻抗本征值,由此本征值求出两个环行条件。然后计算了环行器的归一化结导纳,场变量kR和磁参数K/μ在满足环行条件下的规范曲线。最后,提出了环行器新的设计方法,举出了典型环行器的规一化设计实例,算出了正反方向的频响特性。
In this paper, the problem of electromagnetic field of dual Y-junction circulator is treated as a symmetrical non-reciprocal junction six-port network, and the impedance matrix of the network is obtained. Using the matching principle of each port field, the three- Eigenvalues of the impedances, from which eigenvalues derive two loop conditions. Then the normalized admittance of the circulator is calculated, and the field curve kR and the magnetic parameter K / μ are satisfied under the circumstance of the ring. Finally, a new design method of circulator is put forward. A typical design example of a typical circulator is given, and the frequency response characteristics in the forward and reverse directions are calculated.