Layered stripline filter

Details Layered stripline filter Layered stripline filter

1993-03-01

1995-05-02

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333246, H01P 1203

Patent

active

054123585

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:
patent: 3451015 (1969-06-01), Heath
patent: 4418324 (1983-11-01), Higgins
patent: 4692726 (1987-09-01), Green et al.
patent: 4963843 (1990-10-01), Peckham
patent: 5248949 (1993-09-01), Eguchi et al.

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