窄带波导滤波器物理尺寸的快速确定方法

Quick Design of Narrowband Waveguide Filter with Cross Couplings

介绍了窄带波导滤波器物理尺寸的快速确定方法。推导出一种用于计算耦合窗散射参数的显式表达式,借此能够方便地结合电磁(EM)仿真软件确定耦合结构的物理尺寸。此外,考虑到补偿相位的影响,对于交叉耦合中电耦合孔中心位置的确定给出了更加精确的修正方法。最后,用一个四阶交叉耦合滤波器实例验证了方法的有效性。

A quick design method for determining physical dimensions of narrowband waveguide filter is introduced.An explicit function for calculating scattering parameters of coupling windows is proposed.Whereby,one can determine physical dimensions of coupling elements with the help of EM simulators easily.This paper also corrects the central position of the electric cross-coupling hole so that the result is more accurate.At last,the validity is proved by a four-order cross-coupling filter example.