混合腔间耦合及其在大功率滤波器中的应用

该文在简要介绍微波谐振腔间耦合结构及其适用范围的基础上,集中讨论了一种用于大功率紧耦合谐振腔滤波器的混合腔间耦合结构。该结构由相邻腔间耦合窗和跨腔耦合环组成。经研究发现该结构能在紧耦合的指标下,减小耦合窗的尺寸同时提高单腔无载Q值;且在耦合窗固定情况下能在对通带特性影响较小的同时实现腔间耦合度的调整。研究结果对于大功率微波滤波器设计具有一定参考价值。

The Study of a Mixed Inter-cavity Coupling Structure

Based on the brief introduction of inter-cavity coupling structures of microwave filters and its application field,we mainly discuss a mixed inter-cavity structure which used in high power and tight-coupling filters.The structure consists of a rectangular coupling aperture and a coupling loop across the cavities.Through investigation,we find that the structure can solve the contradiction between coupling and the unloaded Q value which exists in the general coupling structure,this structure can realize appro...