公开(公告)号：US20140340169A1

公开(公告)日：2014-11-20

申请号：US14448699

申请日：2014-07-31

Applicant: Powerwave Technologies S. a.r.L.

Inventor： Purna Subedi

IPC: H03H7/46

CPC classification number: H01P1/2136 ,  H01P1/2053 ,  H01P1/208 ,  H01P1/2133 ,  H01P7/04

Abstract: An improved microwave cavity filter used in cellular communication systems such as base stations is disclosed. The cavity filter has a conductive housing forming a cavity therein and a hollow conductive resonator configured in the cavity with a folded hat shaped upper portion. A tuning screw extends from the top cover of the housing into the top folded hat portion of the hollow resonator to fine tune the resonator. The resonator also may preferably include two different diameter sections providing a first high impedance section with smaller diameter and a second lower impedance section with a larger diameter configured at an upper end of the resonator. This configuration provides a significantly smaller cavity height for a given power handling capability. The resonator is preferably of constant thickness allowing low cost stamping or other forming techniques to be used in forming the resonator.

Abstract translation: 公开了一种用于诸如基站的蜂窝通信系统中的改进的微波空腔滤波器。 空腔滤波器具有在其中形成空腔的导电壳体和在空腔中构造为具有折叠帽状上部的空心导电谐振器。 调谐螺丝从壳体的顶盖延伸到中空谐振器的顶部折叠帽部分以微调谐振器。 谐振器还可以优选地包括提供具有较小直径的第一高阻抗部分和具有较大直径的第二较低阻抗部分的两个不同直径部分，其构造在谐振器的上端。 该配置为给定的功率处理能力提供了显着更小的腔体高度。 谐振器优选地具有恒定的厚度，允许在形成谐振器时使用低成本的冲压或其他成形技术。