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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.

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First Claim