Filter, method of manufacturing same, and component of a filter

Details Filter, method of manufacturing same, and component of a filter Filter, method of manufacturing same, and component of a filter

1999-02-02

2000-08-29

Pascal, Robert

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333207, 333219, H01P 120, H01P 700

Patent

active

061114839

ABSTRACT:
The invention relates to a filter, a method of manufacturing a filter and a component of a filter shell construction. The filter involved is particularly a multi-circuit filter comprising a plurality of resonance circuits and a conductive shell construction (21) comprising a wall construction (22, 22a, 22b) having walls, and a first and second end which close the shell construction providing the shell construction with a section construction defined by the wall construction and the ends, the section construction comprising one or more sections. The filter also comprises resonance circuit resonators in the section construction of the shell construction (2) in one or more sections (11 to 14) thereof. The filter further comprises coupling adjusting elements for adjusting the couplings between the different resonance circuits of the filter. In accordance with the invention, the resonators, at least in the areas on the side of the end, and the coupling adjusting elements are constructions provided at the end from the material of the end by impact extrusion.

REFERENCES:
patent: 4278957 (1981-07-01), Starai
patent: 4706051 (1987-11-01), Dieleman
patent: 5157363 (1992-10-01), Puurunen et al.
patent: 5329687 (1994-07-01), Scott
patent: 5491604 (1996-02-01), Nguyen et al.
patent: 5850169 (1998-12-01), Hietala
patent: 5990763 (1999-11-01), Sipila

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