Patent ID: 8912867
Filing Date: 2014-12-16
Classification: H01P

Abstract:
1. A waveguide filter, comprising: a) a set of coupling screws defining a plurality of resonant cavities, wherein adjacent coupling screws in the set of coupling screws define therebetween respective resonant cavities of the plurality of resonant cavities, each coupling screw in the set of coupling screws forming a coupling element for a respective resonant cavity of the plurality of resonant cavities and being adjustable for trimming a coupling of that respective resonant cavity; b) tuning screws positioned between adjacent coupling screws in the set of coupling screws, the tuning screws being adjustable for trimming respective resonance frequencies of the plurality of resonant cavities; and c) a housing defining a passage through which waves can travel, the set of coupling screws and the set of tuning screws extending through the housing into the passage, wherein the passage comprises a substantially rectangular cross-section with first and second wide walls positioned opposite one another and first and second narrow walls positioned opposite one another, wherein at least a first coupling screw of the set of set of coupling screws extends into the passage from the first wide wall of the housing and at least a second coupling screw of the set of coupling screws extends into the passage from the second wide wall of the housing, such that the first coupling screw and the second coupling screw are positioned opposite each other in a facing relationship.