Chip type filter with electromagnetically coupled resonators

Details Chip type filter with electromagnetically coupled resonators Chip type filter with electromagnetically coupled resonators

1996-01-11

1999-09-21

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333185, H03H 700

Patent

active

059559314

ABSTRACT:
There is provided a chip type filter which can be made compact, allows the matching of input/output impedance, and has preferable characteristics. A ground electrode is formed on one side of a dielectric substrate, and spiral-shaped pattern electrodes are formed on the other side. Input/output electrodes are led out from intermediate portions of the pattern electrodes. Curved portions are formed between the input/output electrodes and the ends of the pattern electrodes. The ends of the pattern electrodes are positioned close to each other. Protective layers are formed on the ground electrode and pattern electrodes, which are laminated and integrated to form external electrodes. The ends of the pattern electrodes and the ground electrode are connected by one of the external electrodes.

REFERENCES:
patent: 4203081 (1980-05-01), Braeckelmann
patent: 4757285 (1988-07-01), Krause
patent: 4888568 (1989-12-01), Kawaguchi
patent: 5075650 (1991-12-01), Okamura et al.
patent: 5105176 (1992-04-01), Okamura et al.
patent: 5404118 (1995-04-01), Okamura et al.
patent: 5506551 (1996-04-01), Kaneko et al.
patent: 5521564 (1996-05-01), Kaneko et al.

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