LC-type dielectric filter having an inductor on the outermost layer and frequency adjusting method therefor

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United States of America Patent

PATENT NO 5781081
SERIAL NO

08703946

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In an LC-type dielectric filter, an inductor is formed on the uppermost or outermost insulation or dielectric layer and electrically connected at the opposite ends thereof to an upper electrode and a lower electrode which cooperate with a thin film dielectric layer to constitute a capacitor, by means of conductive vias. A method of adjusting a frequency of an LC-type filter is also provided. By the method, an optimum inductance for an inductor is calculated based on a measured capacitance and a desired frequency of the filter, and a pattern of the inductor which is capable of attaining the optimum inductance is selected from a group of predetermined patterns which differ in inductance. The inductor is formed on the outermost dielectric layer in such a manner as to have the selected pattern.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NGK SPARK PLUG CO., LTD.AICHI1376

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arakawa, Michiya Kani, JP 2 15
Koike, Kazumasa Konan, JP 22 274
Takemura, Tatsuya Kani, JP 5 70
Tanaka, Hideaki Gifu, JP 408 3864

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