Patent ID: 6255919
Filing Date: 2001-07-03
Classification: H01P

Abstract:
A filter apparatus comprising:an enclosure defining a plurality of cavities, each cavity having a resonator mounted therein;said enclosure including a peripheral outer wall extending between a base and a closure, and an inner wall structure extending between said cavities;said inner wall structure including an inner wall extending upwardly from said base between a pair of said cavities and having an inner wall upper edge surface that is spaced below said closure to define a gap between said closure and said inner wall upper edge surface;an elongated coupling structure extending into said gap from said peripheral wall parallel to said inner wall and in spaced relationship to both said closure and said inner wall upper edge surface; andsaid elongated coupling structure being spaced uniformly along its length from each of the resonators in said pair of cavities between which said inner wall extends.