Layered stripline filter including capacitive coupling electrode

Details Layered stripline filter including capacitive coupling electrode Layered stripline filter including capacitive coupling electrode

1995-01-30

1996-11-19

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333185, 333202, H01P 120

Patent

active

055766722

ABSTRACT:
A transmission line filter having an improved attenuation characteristic is disclosed. The transmission line filter includes at least input-side and output-side resonators disposed in a dielectric layer which are inductively coupled with each other. Additionally, intermediate resonators may be disposed between the input-side and output-side resonators. Further, input and output electrodes are provided in another dielectric layer, at least one of which is in an opposed facing relationship to a portion of the input-side resonator and a portion of the output-side resonator, so as to overlap only those portions of the input-side and output-side resonators. Where intermediate resonators are disposed, at least one of the input and output electrodes is disposed in an opposed facing relationship to one of the input-side and output-side resonators and a respective adjacent intermediate resonator so as overlap only the above-noted input-side resonator or output-side resonator and respective adjacent intermediate resonator.

REFERENCES:
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patent: 4701727 (1987-10-01), Wong
patent: 4963843 (1990-10-01), Peckham
patent: 4975664 (1990-12-01), Ito et al.
patent: 5248949 (1993-09-01), Eguchi et al.
patent: 5323128 (1994-06-01), Ishizaki et al.
patent: 5357227 (1994-10-01), Tonegawa et al.

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