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US 9,287,844 B2Granted
Surface mountable multi-layer ceramic filter
AssigneeKemet Electronics Corporation
InventorsJohn Bultitude, Mark R. Laps, James R. Magee, Lonnie G. Jones
Life of this patent
Estimating the term…
Abstract
An improved electronic filter is provided with capacitance and integral inductance properties. The filter has a capacitor with first planer internal electrodes in electrical contact with a first termination and second planer internal electrodes in electrical contact with a second termination. A dielectric is between the first planer internal electrodes and the second planer internal electrodes. A third termination is provided and a conductive trace on a surface of the capacitor is between the third termination and the first termination. A ferromagnetic or ferrimagnetic material is coupled to the conductive trace.
Claims36
An electronic filter comprising:
- a capacitor comprising:
- a plurality of first planar internal electrodes in electrical contact with a first termination;
- a plurality of second planar internal electrodes in electrical contact with a second termination;
- and
- a dielectric between said plurality of first planar internal electrodes and said plurality of second planar internal electrodes;
- a third termination;
- a conductive trace over a surface of said capacitor;
- wherein said conductive trace is between said third termination and said first termination;
- and
- a ferromagnetic or ferrimagnetic material in a heat cured polymer on said surface of said capacitor and coupled to said conductive trace, wherein a portion of said conductive trace is between said surface of said capacitor and said ferromagnetic or ferrimagnetic material.
7 more elements
An electronic filter comprising:
- a capacitor comprising:
- a plurality of first planar internal electrodes in electrical contact with a first termination;
- a plurality of second planar internal electrodes in electrical contact with a second termination;
- a plurality of common planes, wherein for each common plane of said plurality of common planes a first planar internal electrode of said plurality of first planar internal electrodes and a second planar internal electrode of said plurality of second planar internal electrodes are coplanar;
- a plurality of third planar internal electrodes interleaved with said plurality of common planes;
- a dielectric between each said common plane and said plurality of third planar internal electrodes;
- a third termination;
- a conductive trace over a surface of said capacitor;
- wherein said conductive trace is between said third termination and said first termination;
- and
- a ferromagnetic or ferrimagnetic material coupled to said conductive trace;
- a second conductive trace over said surface of said capacitor;
- wherein said second conductive trace is between said first termination and a fourth termination;
- and
- a second ferromagnetic or ferrimagnetic material coupled to said second conductive trace.
12 more elements
An electronic filter comprising:
- a capacitor comprising:
- a plurality of first planar internal electrodes in electrical contact with a first termination;
- a plurality of second planar internal electrodes in electrical contact with a second termination;
- a plurality of common planes, wherein for each common plane of said plurality of common planes a first planar internal electrode of said plurality of first planar internal electrodes and a second planar internal electrode of said plurality of second planar internal electrodes are coplanar;
- a plurality of third planar internal electrodes interleaved with said plurality of common planes;
- a dielectric between each said common plane and said plurality of third planar internal electrodes;
- a third termination;
- a conductive trace over a surface of said capacitor;
- wherein said conductive trace is between said third termination and said first termination;
- and
- a ferromagnetic or ferrimagnetic material coupled to said conductive trace, wherein a portion of said conductive trace is between said surface and said ferromagnetic or ferrimagnetic material.
8 more elements
A method of providing an electronic circuit comprising:
- providing an electronic filter comprising:
- a capacitor comprising:
- a plurality of first planar internal electrodes in electrical contact with a first termination;
- a plurality of second planar internal electrodes in electrical contact with a second termination;
- and
- a dielectric between said plurality of first planar internal electrodes and said plurality of second planar internal electrodes;
- a plurality of third planar internal electrodes in electrical contact with said first termination;
- a plurality of fourth planar internal electrodes in electrical contact with a fourth termination;
- a third termination;
- a conductive trace over a surface of said capacitor;
- wherein said conductive trace is between said third termination and said first termination;
- a ferromagnetic or ferrimagnetic material in a heat cured polymer on said surface of said capacitor and coupled to said conductive trace, wherein a portion of said conductive trace is between said surface of said capacitor and said ferromagnetic or ferrimagnetic material;
- and
- mounting said electronic filter on a circuit trace board.
11 more elements
A method of making an electronic filter comprising:
- forming a stacked arrangement comprising a plurality of first conductive plates in electrical contact with a first termination and a plurality of second conductive plates in electrical contact with a second termination and a dielectric between said plurality of first conductive plates and said plurality of second conductive plates;
- forming a third termination on said stacked arrangement;
- and
- forming a conductive trace over said stacked arrangement wherein said conductive trace is electrically connected between the first termination and the second termination and said conductive trace is magnetically coupled to a ferromagnetic or ferrimagnetic material and at least a portion of said conductive trace is between said stacked arrangement and said ferromagnetic or ferrimagnetic material.
1 more element
Dependencies are inferred from the claim text.