Patch cord having a plug with contacts having a curved segment extending forwardly of a front edge of a printed circuit board
Patch cords are provided that include a communications cable that has at least first through fourth conductors and a plug that is attached to the cable. The plug includes a housing that receives the cable, a printed circuit board, first through fourth plug contacts, and first through fourth conductive paths that connect the first through fourth conductors to the respective first through fourth plug contacts. The first and second conductors, conductive paths, and plug contacts form a first differential transmission line, and the third and fourth conductors, conductive paths, and plug contacts form a second differential transmission line. Each of the first through fourth plug contacts has a first segment that extends longitudinally along a first surface of the printed circuit board, and the signal current injection point into the first segment of at least some of the first through fourth plug contacts is into middle portions of their respective first segments.
1. A patch cord comprising:
a communications cable that includes first through eighth conductors; and
an RJ-45 plug that is attached to the communications cable, the RJ-45 plug comprising:
a housing that receives the communications cable;
a printed circuit board that is at least partly within the housing, the printed circuit board including first through eighth conductive paths that are electrically connected to the respective first through eighth conductors of the communications cable; and
first through eighth plug contacts mounted on the printed circuit board;
wherein each of the first through fourth plug contacts has a first segment that extends longitudinally along a first surface of the printed circuit board and a second curved segment that extends forwardly of a front edge of the printed circuit board.
2. The patch cord of claim 1 , wherein the signal current injection point into the first segment of at least some of the first through eighth plug contacts is into middle portions of their respective first segments.
3. The patch cord of claim 1 , wherein each of the first through eighth conductive paths is electrically connected to a respective one of first through eighth conductive vias in the printed circuit board, and wherein the first through eighth plug contacts are mounted in respective ones of the first through eighth conductive vias.
4. The patch cord of claim 1 , wherein the conductive vias extend in at least first and second transverse rows, and wherein the first through eighth plug contacts extend in a single transverse row.
5. The patch cord of claim 1 , wherein the plug-jack mating point on the first plug contact is on a first side of the first plug contact and wherein the signal current injection point into the first plug contact is on a second side of the first plug contact that is opposite the first side and is also substantially opposite the plug-jack mating point on the first plug contact.
6. The patch cord of claim 1 , wherein substantially the entirety of the first segment of the first plug contact rests directly on the first surface of the printed circuit board.
7. The patch cord of claim 1 , wherein the respective signal current injection points into the first and third plug contacts are aligned in a first transverse row, and the respective signal current injection points into the second and fourth plug contacts are offset from the first row.
8. The patch cord of claim 7 , wherein the respective signal current injection points into the second and fourth plug contacts are aligned in a second transverse row.
9. The patch cord of claim 1 , wherein the signal current-carrying path through the first plug contact is offset in a longitudinal dimension of the plug from the signal current-carrying path of the second plug contact.
10. The patch cord of claim 1 , further comprising an offending crosstalk capacitor that injects offending crosstalk between the second conductive path and the third conductive path.