Conductive cover for dielectric filter, dielectric filter,...

Details Conductive cover for dielectric filter, dielectric filter,... Conductive cover for dielectric filter, dielectric filter,...

2005-07-05

2005-07-05

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S134000, C333S206000

Reexamination Certificate

active

06914499

ABSTRACT:
A dielectric filter includes a conductive cover formed by bending a metal plate and forming at least one inwardly projecting portion at a predetermined position along the bent portion. The inner surface of the at least one inwardly projecting portion abuts on an open circuit surface or edge of a dielectric block. Thus, the distance between the open circuit surface of the filter and the conductive cover is reliably maintained and unnecessary coupling between adjacent resonators is prevented.

REFERENCES:
patent: 4906955 (1990-03-01), Yorita et al.
patent: 5250916 (1993-10-01), Zakman
patent: 5374910 (1994-12-01), Yamagata
patent: 5745018 (1998-04-01), Vangala
patent: 6400239 (2002-06-01), Chun et al.
patent: 08-097610 (1996-04-01), None
patent: 09-167902 (1997-06-01), None
patent: 2002-299907 (2002-10-01), None

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