Filter assemblies and communication systems based thereon

Details Filter assemblies and communication systems based thereon Filter assemblies and communication systems based thereon

H - Electricity

01

P

H01P 1/208 (2006.01)

Patent

CA 2581198

A filter assembly (300) with a plurality of cavities serving as said waveguide resonators is presented. The cavities are arranged at least on two levels (xl, yl; x2, y2) of said filter assembly (300). Two or three molded filter parts (301, 302, 303) define the cavities, when the filter parts (301, 302, 303) are assembled. A first opening in a wall between a first and a second of cavity is provided. Said opening serves as capacitive junction between said first cavity and said second cavity. A second opening is provided in another wall between a third cavity and a fourth cavity, said opening serving as inductive junction. The filter parts (301, 302, 303) are at least partially covered by a metal layer.

La présente invention concerne un ensemble de filtrage (300) comprenant une pluralité de cavités qui servent de résonateurs en guides d'ondes. Les cavités sont placées sur au moins deux niveaux (x1, y1; x2, y2) de l'ensemble de filtrage (300). Deux ou trois pièces moulées de filtrage (301, 302, 303) définissent les cavités lorsqu'elles sont assemblées. Une première ouverture est ménagée dans une paroi, entre une première et une seconde cavité. Cette ouverture sert de jonction capacitive entre la première et la seconde cavité. Une seconde ouverture est ménagée dans une autre paroi, entre une troisième et une quatrième cavité, et sert de jonction capacitive. Les pièces de filtrage (301, 302, 303) sont au moins partiellement recouvertes d'une couche métallique.

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