Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Reexamination Certificate
2005-07-26
2005-07-26
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
C333S206000, C333S223000, C333S202000
Reexamination Certificate
active
06922120
ABSTRACT:
A method of manufacturing a dielectric filter comprises the steps of: forming a dielectric block; depositing a conductor on the side surfaces and the second surface of the dielectric block, and forming a plurality of resonators, forming input and output terminals on the side surface of the dielectric block, and forming conductive patterns on at least a part of the area of the first surface; and depositing a thermosetting resin on the first surface provided with the conductive patterns, and curing the thermosetting resin. The dielectric filter comprising the protection layer on an open surface prevents defects such as a short circuit generated in a trimming step. The interval between the patterns is reduced to less than 0.04 mm, advantageously facilitating miniaturization of the dielectric filter.
REFERENCES:
patent: 4808951 (1989-02-01), Yamato et al.
patent: 5525946 (1996-06-01), Tsujiguchi et al.
patent: 5642084 (1997-06-01), Matsumoto et al.
patent: 5945896 (1999-08-01), Miyamoto
patent: 6008707 (1999-12-01), Tada et al.
Lee Hong Seok
Lee Su Kil
Glenn Kimberly
Lowe Hauptman & Berner LLP
Pascal Robert
Samsung Electro-Mechanics Co. Ltd.
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