Next high frequency improvement by using frequency dependent effective capacitance
First Claim
Patent Images
1. An electrical connector, comprising:
- a plurality of input terminals;
a plurality of output terminals;
a plurality of conductive paths connecting respective of the plurality of input terminals with respective of the plurality of output terminals; and
a first compensation structure that couples a first compensating crosstalk signal from a first of the plurality of conductive paths to a second of the plurality of conductive paths; and
a second compensation structure that couples a second compensating crosstalk signal from a third of the plurality of conductive paths to the second of the plurality of conductive paths,wherein the second compensation structure comprises a capacitor and an inductor that is connected to the capacitor in series;
wherein the inductor comprises a conductive path that includes one or more self-coupling sections.
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Abstract
A connector is provided for simultaneously improving both the NEXT high frequency performance when low crosstalk plugs are used and the NEXT low frequency performance when high crosstalk plugs are used. The connector includes a first compensation structure provided on an inner metalized layer of the PCB at a first stage area of the PCB, and a second compensation structure, provided at a second stage area of the PCB, for increasing compensation capacitance with increasing frequency.
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Citations
21 Claims
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1. An electrical connector, comprising:
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a plurality of input terminals; a plurality of output terminals; a plurality of conductive paths connecting respective of the plurality of input terminals with respective of the plurality of output terminals; and a first compensation structure that couples a first compensating crosstalk signal from a first of the plurality of conductive paths to a second of the plurality of conductive paths; and a second compensation structure that couples a second compensating crosstalk signal from a third of the plurality of conductive paths to the second of the plurality of conductive paths, wherein the second compensation structure comprises a capacitor and an inductor that is connected to the capacitor in series; wherein the inductor comprises a conductive path that includes one or more self-coupling sections. - View Dependent Claims (2, 3, 4)
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5. A printed circuit board for an RJ-45 style electrical connector, the printed circuit board comprising:
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a plurality of input terminals; a plurality of output terminals; a plurality of conductive paths connecting respective of the plurality of input terminals with respective of the plurality of output terminals; and a first conductive trace branching off of a first of the plurality of conductive paths, the first conductive trace including a self-inductive section and a first electrode of a capacitor; a second conductive trace branching off of a second of the plurality of conductive paths, the second conductive trace including a second electrode of the capacitor. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A method of reducing near end crosstalk in an electrical connector that includes a plurality of pairs of conductors, the method comprising:
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providing a first compensation structure that couples a first compensating crosstalk signal from a first conductor of a first of the pairs of conductors to a first conductor of a second of the pairs of conductors; providing a second compensation structure that couples a second compensating crosstalk signal from the first conductor of the first of the pairs of conductors to a second conductor of the second of the pairs of conductors; wherein the second compensation structure includes a series inductor-capacitor circuit; wherein the inductor in the series inductor-capacitor circuit comprises a conductive path that includes one or more self-coupling sections. - View Dependent Claims (13, 14)
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15. An electrical connector, comprising:
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a first conductor; a second conductor; and a circuit that is configured to couple energy between the first and second conductors; wherein the circuit comprises a capacitor and an inductor that is connected in series to the capacitor; wherein the inductor in the series inductor-capacitor circuit comprises a conductive path that includes one or more self-coupling sections; and wherein the inductor comprises a conductive trace on a printed circuit board that include self-coupling sections. - View Dependent Claims (16)
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17. An electrical connector, comprising:
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a first pair of conductors; a second pair of conductors; a compensation structure that couples a first compensating crosstalk signal from a first conductor of the first pair of conductors to a second conductor of the second pair of conductors; and wherein the compensation structure comprises a capacitor and an inductor that is connected to the capacitor in series, and wherein both the capacitor and the inductor are interposed in series between the first conductor of the first pair of conductors and the second conductor of the second pair of conductors. - View Dependent Claims (18, 19, 20, 21)
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Specification