The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 1998
Filed:
Aug. 28, 1996
Michiya Arakawa, Kani, JP;
Tatsuya Takemura, Kani, JP;
Kazumasa Koike, Konan, JP;
Hideaki Tanaka, Gifu, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
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.