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.AICHI1358

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arakawa, Michiya Kani, JP 2 14
Koike, Kazumasa Konan, JP 22 270
Takemura, Tatsuya Kani, JP 5 69
Tanaka, Hideaki Gifu, JP 385 3624

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CTS Corporation (1)
* 4963843 Stripline filter with combline resonators 45 1988
 
TDK CORPORATION (1)
* 5523729 Multilayer band pass filter with a zero point forming capacitor 5 1993
 
MURATA MANUFACTURING CO., LTD. (2)
* 5023578 Filter array having a plurality of capacitance elements 39 1990
* 5404118 Band pass filter with resonator having spiral electrodes formed of coil electrodes on plurality of dielectric layers 39 1993
* Cited By Examiner

Patent Citation Ranking

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STATS CHIPPAC PTE. LTE. (3)
* 8576026 Semiconductor device having balanced band-pass filter implemented with LC resonator 9 2008
* 2009/0167,455 Semiconductor Device Having Balanced Band-Pass Filter Implemented with LC Resonator 5 2008
8975980 Semiconductor device having balanced band-pass filter implemented with LC resonators 0 2013
 
Ultrasource, Inc. (9)
6761963 Integrated thin film capacitor/inductor/interconnect system and method 21 2001
6998696 Integrated thin film capacitor/inductor/interconnect system and method 8 2003
6890629 Integrated thin film capacitor/inductor/interconnect system and method 10 2003
7327582 Integrated thin film capacitor/inductor/interconnect system and method 6 2005
* 2005/0175,938 Integrated thin film capacitor/inductor/interconnect system and method 3 2005
7425877 Lange coupler system and method 1 2005
* 2005/0162,236 Lange coupler system and method 2 2005
7446388 Integrated thin film capacitor/inductor/interconnect system and method 6 2005
* 2006/0097,344 Integrated thin film capacitor/inductor/interconnect system and method 0 2005
 
MICROSOFT TECHNOLOGY LICENSING, LLC (2)
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WACOM CO., LTD. (2)
* 9261977 Electronic circuit and position indicator 0 2013
* 2014/0043,777 ELECTRONIC CIRCUIT AND POSITION INDICATOR 0 2013
* Cited By Examiner