有孔圆柱介质谐振频率的自动测试方法

Automatic Measurement Method of the Resonant Frequency of Cylindrical Dielectric Resonator with Holes

从求解Maxwell方程本征值出发,采用MATLAB中PDE工具箱,借助可二维作图的开槽圆柱谐振器,计算出有孔圆柱介质谐振器的谐振频率。求解结果与矢量网络分析仪测量结果吻合,误差在千分之四以内。且该有限元法计算软件采用MATLAB编写,可方便地被调用于矢量网络分析仪的VEE测试软件中,较好解决有孔及变形圆柱介质谐振器的设计、测量和微调等问题,特别是矢量网络分析仪的快速自动测量中。

One method of calculating the resonant frequency of cylindrical dielectric resonant with holes is introduced. The method is based on the solution of eigenvalue of the Maxwell equation, and the resonant frequency of cylindrical dielectric resonant with holes is solved by applying the PDE tool box in the Matlab. Compared to the measurement results of the PNA, the error of the method is not more than 0. 4%. The numerical method can be programmed by Matlab, and then can be applied conveniently in the test software VEE of the PNA. Thus, the complementary advantages of the method are very beneficial for the design of the resonant frequency of cylindrical dielectric resonant with holes and the deformation cylindrical dielectric resonant, and also can be used for solving many other problems, such as online automatic measurement of the resonant frequency of cylindrical dielectric resonant with holes and the deformation cylindrical dielectric resonant.