Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1993-11-23
1995-05-23
Ham, Seungsook
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333219, H01P 120, H01P 700
Patent
active
054185084
ABSTRACT:
A filter construction known in the art comprises at least a number of helix resonators (1) and an insulation material plate, the projections (2a) projecting from the rectangular lower part (2) whereof are provided inside the helix resonators and thus supporting them. The filter housing (6), defined by a cover (8) and the side walls, is provided with compartments, so that each compartment includes a helical resonator. As taught by the invention, at least two guides (71) projecting from the surface are extruded in the same phase as the compartment on the inner surface of the cover, wherebetween the tip part of the projection (2a) supporting the resonator enters when the filter is assembled. The guide can be a hemisphere or a rib-like bulge.
REFERENCES:
patent: 3101461 (1963-08-01), Henry-Bezy et al.
patent: 3387237 (1968-06-01), Cook
patent: 3487340 (1969-12-01), Curtis, III et al.
patent: 4061992 (1977-12-01), Inokuchi
Patent Abstracts of Japan, vol. 9, No. 288 (E-358)(2011) 15 Nov. 1985 & JP-A-60 127 802 Matsushita Denki Sangyo K.K.) 8 Jul. 1985.
Ham Seungsook
LK-Products OY
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