Stripline filter with capacitive coupling structures

Details Stripline filter with capacitive coupling structures Stripline filter with capacitive coupling structures

1995-12-18

1998-09-22

Pascal, Robert

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333219, H01P 1203, H01P 708

Patent

active

058120378

ABSTRACT:
A stripline filter includes a ceramic substrate having first and second mutually opposite side surfaces and an end surface. At least one stripline resonator is disposed on the first side surface. Capacitive coupling structures are disposed at the end surface for coupling a high-frequency signal in and out. Ground metallizing covers the ceramic substrate except for the first side surface and the end surface. The coupling structures are formed by coupling metal surfaces being disposed on the second side surface and a galvanic separation being disposed on the second side surface and separating the coupling metal surfaces from the ground metallizing; metal surfaces being disposed on the first side surface and being galvanically separated from the stripline resonators; and through holes being formed in the ceramic substrate for galvanically connecting the coupling metal surfaces and the metal surfaces to one another through the through holes.

REFERENCES:
patent: 5097237 (1992-03-01), Komazaki et al.
patent: 5105173 (1992-04-01), Itou
patent: 5105175 (1992-04-01), Kaltenecker
Japanese Patent Abstract No. 5-110316, Sagawa, dated Apr. 30, 1993.

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