MLC frequency selective circuit structures
First Claim
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1. A multilayer ceramic (MLC) frequency selective circuit that combines an inductive effect and a capacitive effect in an integrated structure which functions as a frequency dependent circuit, comprising:
- a multilayer ceramic structure defining at least first and second spaced planes, the first and second spaced planes containing respectively a first and second plurality of metal shaped segments;
the metal shaped segments are rectangular in shape, and each metal shaped segment has a length of a few millimeters and a width of 50-500 microns, with the spacing between the metal shaped segments in the first and second planes being 15-100 microns, and the upper and lower metal shaped segments being separated by one or more layers of ceramic having holes formed therethrough for the vias;
a plurality of conductive vias connecting the first plurality of metal shaped segments in the first plane with the second plurality of metal shaped segments in the second spaced plane, thereby forming a conductive solenoid coil structure in a multilayer ceramic frequency selective circuit.
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Abstract
MLC (multilayer ceramic) frequency selective circuit structures are disclosed. The MLC frequency selective circuit structures have a solenoid and toroid coil geometry in a multilayer electronic package which functions as a frequency selective tuned circuit in which both the number of turns and the aspect ratio of the solenoid coil are selected to adjust the tuned frequency. In some embodiments, a plurality of such coils can be connected together to provide a selected bandwidth about a tuned center frequency.
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Citations
24 Claims
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1. A multilayer ceramic (MLC) frequency selective circuit that combines an inductive effect and a capacitive effect in an integrated structure which functions as a frequency dependent circuit, comprising:
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a multilayer ceramic structure defining at least first and second spaced planes, the first and second spaced planes containing respectively a first and second plurality of metal shaped segments;
the metal shaped segments are rectangular in shape, and each metal shaped segment has a length of a few millimeters and a width of 50-500 microns, with the spacing between the metal shaped segments in the first and second planes being 15-100 microns, and the upper and lower metal shaped segments being separated by one or more layers of ceramic having holes formed therethrough for the vias;
a plurality of conductive vias connecting the first plurality of metal shaped segments in the first plane with the second plurality of metal shaped segments in the second spaced plane, thereby forming a conductive solenoid coil structure in a multilayer ceramic frequency selective circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A multilayer ceramic (MLC) frequency selective circuit that combines an inductive effect and a capacitive effect in an integrated structure which functions as a frequency dependent circuit, comprising:
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a multilayer ceramic structure defining at least first and second spaced planes, the first and second spaced planes containing respectively a first and second plurality of metal shaped segments;
substantially all of the metal shaped segments are triangular in shape, and form a toroidal shaped coil structure having a substantially round circumferential shape, wherein each triangular shaped segment has an inner radial triangular corner positioned adjacent to and pointing towards the middle of the toroidal shaped coil structure to form the toroidal shaped coil structure, and the inner radial triangular corners of the first plurality of triangular shaped segments overlap the inner radial triangular corners of the second plurality of triangular shaped segments, and the outer radial triangular sides of the first plurality of triangular shaped segments are circumferentially rotated and offset with respect to the outer radial triangular sides of the second plurality of triangular shaped segments;
a plurality of conductive vias connecting the first plurality of triangular shaped metal shaped segments in the first plane with the second plurality of triangular shaped metal shaped segments in the second spaced plane, wherein a via at a clockwise circumferential end of the outer radial triangular side of each of the first plurality of triangular segments connects to a counterclockwise circumferential end of the outer radial triangular side of each of the second plurality of triangular segments, and a via at the inner radial triangular corner of each of the first plurality of triangular segments connects to the overlapped inner radial triangular corner of each of the second plurality of triangular segments, thereby forming a conductive toroidal shaped coil structure in a multilayer ceramic frequency selective circuit. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification