Circuits, systems and methods for implementing high speed data communications connectors that provide for reduced modal alien crosstalk in communications systems
First Claim
1. A communications outlet including eight conductive paths, each conductive path including a corresponding outlet tine and the outlet tines being positioned adjacent one another and defining four pairs of outlet tines, the fourth and fifth outlet tines defining a first pair, the first and second outlet tines defining a second pair, the third and sixth outlet tines defining a third pair, and the seventh and eighth outlet tines defining a fourth pair, each outlet tine having a free end near which a plug contact is adapted to touch the outlet tine and each outlet tine having a fixed end coupled through a corresponding conductive trace to a corresponding wire terminating contact, the communications outlet comprising a first modal alien crosstalk compensation stage connected to the conductive paths associated with the second, third, and fourth pairs, the first modal alien crosstalk compensation stage including independent capacitive components operably responsive to differential signals on the third pair to introduce common mode signals onto the second and fourth pairs that have the opposite polarity of common mode signals on the second and fourth pairs at points where the plug contact touches the outlet tines;
- a second modal alien crosstalk compensation stage coupled to selected ones of the conductive paths, the second modal alien crosstalk compensation stage including independent capacitive components operably responsive to differential signals on the third pair to introduce common mode signals onto the second and fourth pairs that have the same polarity as common mode signals on the second and fourth pairs introduced in the plug contacts; and
wherein the independent capacitive components of the second modal alien crosstalk compensation stage comprise;
a first capacitance coupled between the conductive path of the third outlet tine and the conductive path of the second outlet tine;
a second capacitance coupled between the conductive path of the third outlet tine and the conductive path of the first outlet tine;
a third capacitance coupled between the conductive path of the sixth outlet tine and the conductive path of the seventh outlet tine; and
a fourth capacitance coupled between the conductive path of the sixth outlet tine and the conductive path of the eighth outlet tine.
1 Assignment
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Accused Products
Abstract
A communications outlet includes eight outlet tines positioned adjacent one another and defining four pairs of outlet tines. The fourth and fifth outlet tines define a first pair, the first and second outlet tines define a second pair, the third and sixth outlet tines define a third pair, and the seventh and eighth outlet tines define a fourth pair. Each outlet tine has a free end near to which a plug contact is adapted to touch and each outlet tine has a fixed end coupled through a corresponding conductive trace to a corresponding conductive wire termination contact. The communications outlet includes a first modal alien crosstalk compensation stage connected to the outlet tines associated with the second, third, and fourth pairs. The first modal alien crosstalk compensation stage includes independent capacitive components operably responsive to differential signals on the third pair to introduce common mode signals onto the second and fourth pairs that have the opposite polarity of common mode signals on the second and fourth pairs at points where the plug contacts connect with the outlet tines.
94 Citations
25 Claims
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1. A communications outlet including eight conductive paths, each conductive path including a corresponding outlet tine and the outlet tines being positioned adjacent one another and defining four pairs of outlet tines, the fourth and fifth outlet tines defining a first pair, the first and second outlet tines defining a second pair, the third and sixth outlet tines defining a third pair, and the seventh and eighth outlet tines defining a fourth pair, each outlet tine having a free end near which a plug contact is adapted to touch the outlet tine and each outlet tine having a fixed end coupled through a corresponding conductive trace to a corresponding wire terminating contact, the communications outlet comprising a first modal alien crosstalk compensation stage connected to the conductive paths associated with the second, third, and fourth pairs, the first modal alien crosstalk compensation stage including independent capacitive components operably responsive to differential signals on the third pair to introduce common mode signals onto the second and fourth pairs that have the opposite polarity of common mode signals on the second and fourth pairs at points where the plug contact touches the outlet tines;
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a second modal alien crosstalk compensation stage coupled to selected ones of the conductive paths, the second modal alien crosstalk compensation stage including independent capacitive components operably responsive to differential signals on the third pair to introduce common mode signals onto the second and fourth pairs that have the same polarity as common mode signals on the second and fourth pairs introduced in the plug contacts; and wherein the independent capacitive components of the second modal alien crosstalk compensation stage comprise; a first capacitance coupled between the conductive path of the third outlet tine and the conductive path of the second outlet tine; a second capacitance coupled between the conductive path of the third outlet tine and the conductive path of the first outlet tine; a third capacitance coupled between the conductive path of the sixth outlet tine and the conductive path of the seventh outlet tine; and a fourth capacitance coupled between the conductive path of the sixth outlet tine and the conductive path of the eighth outlet tine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electronic system, comprising:
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a first electronic subsystem; a first plurality of communication cables coupled to the first electronic subsystem, each cable including a corresponding communications plug; a plurality of communications outlets, each communications outlet adapted to receive a corresponding one of the communications plugs, at least some of the communications outlets including eight conductive paths with each conductive path including a corresponding outlet tine, the outlet tines being positioned adjacent one another and defining four pairs of outlet tines, the fourth and fifth outlet tines defining a first pair, the first and second outlet tines defining a second pair, the third and sixth outlet tines defining a third pair, and the seventh and eighth outlet tines defining a fourth pair, each outlet tine having a free end near which a plug contact is adapted to touch the outlet tine and each outlet tine having a fixed end coupled through a corresponding conductive trace to a corresponding wire termination contact, the communications outlet comprising a first modal alien crosstalk compensation stage connected to the conductive paths associated with the second, third, and fourth pairs, the first modal alien crosstalk compensation stage including independent capacitive components operably responsive to differential signals on the third pair to introduce common mode signals onto the second and fourth pairs that have the opposite polarity as common mode signals on the second and fourth pairs at points where the plug contacts touch the outlet tines; a second modal alien crosstalk compensation stage coupled to selected ones of the conductive paths, the second modal alien crosstalk compensation stage including independent capacitive components operably responsive to differential signals on the third pair to introduce common mode signals onto the second and fourth pairs that have the same polarity as common mode signals on the second and fourth pairs introduced in the plug contacts; and wherein the independent capacitive components of the second modal alien crosstalk compensation stage comprise; a first capacitance coupled between the conductive path of the third outlet tine and the conductive path of the second outlet tine; a second capacitance coupled between the conductive path of the third outlet tine and the conductive path of the first outlet tine; a third capacitance coupled between the conductive path of the sixth outlet tine and the conductive path of the seventh outlet tine; and a fourth capacitance coupled between the conductive path of the sixth outlet tine and the conductive path of the eighth outlet tine; a second plurality of communication cables coupled to the wire termination contacts of the plurality of communications outlets; and a second electronic subsystem coupled to the second plurality of communication cables. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification