Multistage capacitive crosstalk compensation arrangement
First Claim
1. A telecommunications jack for use in a twisted pair system, the jack comprising:
- a housing defining a port for receiving a plug;
a plurality of contact springs adapted to make electrical contact with the plug when the plug is inserted into the port of the housing;
a plurality of wire termination contacts for terminating wires to the jack;
a circuit board including conductive tracks that electrically connect the contact springs to the wire termination contacts, the circuit board having a first side and an opposite second side, wherein the plurality of contact springs extend from the first side of the circuit board and the plurality of wire termination contacts extend from the second side of the circuit board, the circuit board having first and second conductive layers separated from one another by a dielectric layer with conductive vias extending through the dielectric layer to provide electrical connections between the first and second conductive layers; and
a crosstalk compensation arrangement that provides crosstalk compensation between selected tracks of the circuit board, the crosstalk compensation arrangement including a zone of compensation including a capacitive coupling having a first capacitor plate defining a minor circular sector shape on the first conductive layer, and a second capacitor plate on the second conductive layer opposed to the first capacitor plate, the second capacitor plate defining a semicircular shape.
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0 Petitions
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.
109 Citations
13 Claims
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1. A telecommunications jack for use in a twisted pair system, the jack comprising:
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a housing defining a port for receiving a plug; a plurality of contact springs adapted to make electrical contact with the plug when the plug is inserted into the port of the housing; a plurality of wire termination contacts for terminating wires to the jack; a circuit board including conductive tracks that electrically connect the contact springs to the wire termination contacts, the circuit board having a first side and an opposite second side, wherein the plurality of contact springs extend from the first side of the circuit board and the plurality of wire termination contacts extend from the second side of the circuit board, the circuit board having first and second conductive layers separated from one another by a dielectric layer with conductive vias extending through the dielectric layer to provide electrical connections between the first and second conductive layers; and a crosstalk compensation arrangement that provides crosstalk compensation between selected tracks of the circuit board, the crosstalk compensation arrangement including a zone of compensation including a capacitive coupling having a first capacitor plate defining a minor circular sector shape on the first conductive layer, and a second capacitor plate on the second conductive layer opposed to the first capacitor plate, the second capacitor plate defining a semicircular shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification