Multistage capacitive crosstalk compensation arrangement
First Claim
1. A crosstalk compensation arrangement in a jack, the crosstalk compensation being adapted to compensate for undesired crosstalk generated at a capacitive coupling located at a plug inserted within the jack, the crosstalk compensation arrangement comprising:
- a first coupling at a first time delay away from the capacitive coupling of the plug, the first coupling including first and second capacitive elements between first and second wire pairs of a jack, the first and second capacitive elements each having a differing capacitive coupling to the first and second wire pairs to compensate for alien crosstalk; and
a second coupling including third and fourth capacitive elements between the first and second wire pairs of a jack at a second time delay from the first coupling, wherein the second time delay corresponds to an average time delay, and wherein different time delays of the third and fourth capacitive elements in the coupling are centered about the average time delay to optimize near end crosstalk and are spaced apart to reduce far end crosstalk.
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Accused Products
Abstract
Methods and systems for providing crosstalk compensation in a jack are disclosed. According to one method, the crosstalk compensation is adapted to compensate for undesired crosstalk generated at a capacitive coupling located at a plug inserted within the jack. The method includes positioning a first capacitive coupling a first time delay away from the capacitive coupling of the plug, the first capacitive coupling having a greater magnitude and an opposite polarity as compared to the capacitive coupling of the plug. The method also includes positioning a second capacitive coupling at a second time delay from the first capacitive coupling, the second time delay corresponding to an average time delay that optimizes near end crosstalk. The second capacitive coupling has generally the same overall magnitude but an opposite polarity as compared to the first capacitive coupling, and includes two capacitive elements spaced at different time delays from the first capacitive coupling.
22 Citations
15 Claims
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1. A crosstalk compensation arrangement in a jack, the crosstalk compensation being adapted to compensate for undesired crosstalk generated at a capacitive coupling located at a plug inserted within the jack, the crosstalk compensation arrangement comprising:
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a first coupling at a first time delay away from the capacitive coupling of the plug, the first coupling including first and second capacitive elements between first and second wire pairs of a jack, the first and second capacitive elements each having a differing capacitive coupling to the first and second wire pairs to compensate for alien crosstalk; and a second coupling including third and fourth capacitive elements between the first and second wire pairs of a jack at a second time delay from the first coupling, wherein the second time delay corresponds to an average time delay, and wherein different time delays of the third and fourth capacitive elements in the coupling are centered about the average time delay to optimize near end crosstalk and are spaced apart to reduce far end crosstalk. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of providing a crosstalk compensation arrangement in a jack, the crosstalk compensation arrangement being adapted to compensate for undesired crosstalk generated at a capacitive coupling located at a plug inserted within the jack, the crosstalk compensation arrangement comprising:
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positioning a first coupling at a first time delay away from the capacitive coupling of the plug, the first coupling including first and second capacitive elements between first and second wire pairs of a jack, the first and second capacitive elements each having a differing capacitive coupling to the first and second wire pairs to compensate for alien crosstalk; and positioning a second coupling including third and fourth capacitive elements between the first and second wire pairs of a jack at a second time delay from the first coupling, wherein the second time delay corresponds to an average time delay, and wherein different time delays of the third and fourth capacitive elements in the coupling are centered about the average time delay to optimize near end crosstalk and are spaced apart to reduce far end crosstalk. - View Dependent Claims (10, 11, 12, 13)
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14. A telecommunications jack for use in a twisted pair system, the jack comprising:
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a plurality of contact springs adapted to make electrical contact with a plug when the plug is inserted into the jack; a plurality of wire termination contacts for terminating wires to the jack; a crosstalk compensation arrangement that provides crosstalk compensation between elected tracks extending between the contact springs and the wire termination contacts, the crosstalk compensation arrangement including; a first coupling at a first time delay away from the capacitive coupling of the plug, the first coupling including first and second capacitive elements between first and second wire pairs of a jack, the first and second capacitive elements each having a differing capacitive coupling to the first and second wire pairs to compensate for alien crosstalk; and a second coupling including third and fourth capacitive elements between the first and second wire pairs of a jack at a second time delay from the first coupling, wherein the second time delay corresponds to an average time delay, and wherein different time delays of the third and fourth capacitive elements in the coupling are centered about the average time delay to optimize near end crosstalk and are spaced apart to reduce far end crosstalk. - View Dependent Claims (15)
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Specification