Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
2008-01-16
2009-10-27
Nguyen, Truc T (Department: 2833)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
C439S941000
Reexamination Certificate
active
07607951
ABSTRACT:
A connection system has two connectors connected to each other by a plurality of differential signal pairs. The differential signal pairs alternate between a “straight connection” and a “reverse connection” between the connectors. The “straight connection” is formed by having a first signal trace connected from a positive launch in the first connector to a positive launch in the second connector, or P-P. And, the second signal trace has an N-N connection. The “reverse connection” has a first signal trace connected from a positive launch in the first connector to a negative launch in the second connector, or P-N. And, the second signal trace has a N-P connection. By inverting the pin connections of every other differential signal pair on the backplane, the forward crosstalk from the first connector is cancelled by the crosstalk generated by the second connector.
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Brooks, D., “Crosstalk, Part I Understanding Forward v. Backward” UltraCAD Design, Inc., pp. 1-4, Nov. 2003, Mentor Graphics, www.mentor.com.
Amphenol Corporation
Nguyen Truc T
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