Integrated EMI filter-DC blocking capacitor
First Claim
1. A capacitor, comprising:
- a monolithic casing of ceramic dielectric material;
first and second sets of electrode plates disposed within the monolithic casing to form a DC blocking capacitor; and
ground electrode plates disposed within the monolithic casing and between selected portions of the first and second sets of electrode plates to form an electromagnetic interference (EMI) filter.
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Accused Products
Abstract
An integrated electromagnetic interference (EMI) filter capacitor and DC blocking capacitor is provided in a single monolithic casing of ceramic dielectric material. First and second sets of electrode plates are disposed within the monolithic casing to form the DC blocking capacitor, and ground electrode plates are disposed between selected portions of the first and second sets of electrode plates to form the EMI filter. In several of the embodiments, the first and second sets of electrode plates form a plurality of distinct DC blocking capacitors. The ground electrode plates cooperatively form, with the first and second sets of electrode plates, EMI filters for each of the distinct DC blocking capacitors. Discontinuous lead wires may be provided which extend at least partially into the casing, wherein a first segment of the lead wire is conductively coupled to the first set of electrode plates, and a second set of the lead wire is conductively coupled to the second set of electrode plates. Grounded shields also may be co-planarly disposed between adjacent components of the first and second sets of electrode plates to reduce cross-talk therebetween.
322 Citations
56 Claims
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1. A capacitor, comprising:
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a monolithic casing of ceramic dielectric material;
first and second sets of electrode plates disposed within the monolithic casing to form a DC blocking capacitor; and
ground electrode plates disposed within the monolithic casing and between selected portions of the first and second sets of electrode plates to form an electromagnetic interference (EMI) filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An integrated electromagnetic interference (EMI) filter-DC blocking capacitor, comprising:
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a casing of dielectric material having first and second sets of electrode plates disposed therein forming a DC blocking capacitor;
a first conductive band on a surface of the casing for conductively coupling the first set of electrode plates;
a second conductive band on a surface of the casing for conductively coupling the second set of electrode plates;
a set of ground electrode plates disposed within the casing between selected portions of adjacent plates of the first and second sets of electrode plates; and
a third conductive band on a surface of the casing for conductively coupling the set of ground electrode plates. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. An integrated electromagnetic interference (EMI) filter-DC blocking capacitor, comprising:
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a casing of dielectric material having generally parallel first and second sets of electrode plates disposed therein which form a plurality of distinct DC blocking capacitors; and
a set of generally parallel ground electrode plates disposed within the casing between selected portions of adjacent plates of the first and second sets of electrode plates, the ground electrode plates cooperatively forming, with the first and second sets of electrode plates, an EMI filter for each of the distinct DC blocking capacitors. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification