초록 ▼

A midplane has a first side to which contact ends of a first differential connector are connected and a second side opposite the first side to which contact ends of a second differential connector are connected. The midplane includes a plurality of vias extending from the first side to the second si

A midplane has a first side to which contact ends of a first differential connector are connected and a second side opposite the first side to which contact ends of a second differential connector are connected. The midplane includes a plurality of vias extending from the first side to the second side, with the vias providing first signal launches on the first side and second signal launches on the second side. The first signal launches are provided in a plurality of rows, with each row having first signal launches along a first line and first signal launches along a second line substantially parallel to the first line. The second signal launches are provided in a plurality of columns, with each column having second signal launches along a third line and second signal launches along a fourth line substantially parallel to the third line.

대표청구항 ▼

What is claimed is: 1. A printed circuit board having a first side to which contact ends of a first differential connector are connected and a second side opposite the first side to which contact ends of a second differential connector are connected, the printed circuit board comprising: a pluralit

What is claimed is: 1. A printed circuit board having a first side to which contact ends of a first differential connector are connected and a second side opposite the first side to which contact ends of a second differential connector are connected, the printed circuit board comprising: a plurality of vias extending from the first side to the second side with the vias providing first signal launches on the first side and second signal launches on the second side; the first signal launches are provided in a plurality of rows for electrically connecting to the contact ends of the first differential connector, with each row having first signal launches along a first line and first signal launches along a second line substantially parallel to the first line, and the first signal launches along the first and second lines are offset so that first signal launches along the first line and adjacent first signal launches along the second line correspond to differential pairs of the first differential connector; and the second signal launches are provided in a plurality of columns for electrically connecting to the contact ends of the second differential connector, with each column having second signal launches along a third line and second signal launches along a fourth line substantially parallel to the third line, and the second signal launches along the third and fourth lines are offset so that second signal launches along the third line and adjacent second signal launches along the fourth line correspond to differential pairs of the second differential connector. 2. The printed circuit board of claim 1, wherein the first and second lines are orthogonal to the third and fourth lines. 3. The printed circuit board of claim 1, wherein for a surface area on the first side and the same surface area on the second side, the number of first signal launches equals the number of second signal launches. 4. The printed circuit board of claim 1, which further comprises a second plurality of vias extending from the first side to the second side with the second plurality of vias providing first ground launches on the first side and second ground launches on the second side. 5. The printed circuit board of claim 4, wherein for each row of first signal launches, the first ground launches are provided along a line adjacent to and substantially parallel to either the first line or the second line of the first signal launches, and for each column of second signal launches, the second ground launches are provided along a line adjacent to and substantially parallel to either the third line or the fourth line of the second signal launches. 6. The printed circuit board of claim 5, wherein for each row of first signal launches, the number of corresponding first ground launches is greater than the number of differential pairs provided by the row, and for each column of second signal launches, the number of corresponding second ground launches is greater than the number of differential pairs provided by the column. 7. The printed circuit board of claim 1, which further comprises: at least one ground plane layer with the plurality of vias extending therethrough; and for each pair of vias corresponding to a differential pair of the first differential connector and the second differential connector, an area surrounding the pair of vias is free of the ground plane layer and each via of the pair is electrically isolated from the other. 8. The printed circuit board of claim 7, wherein the area surrounding the pair of vias free of the ground plane layer is substantially oval in shape. 9. The printed circuit board of claim 7, wherein the area surrounding the pair of vias free of the ground plane layer is substantially rectangular in shape. 10. The printed circuit board of claim 7, wherein the area surrounding the pair of vias free of the ground plane layer is oriented substantially at a 45 degree angle relative to the rows of the first signal launches. 11. The printed circuit board of claim 7, wherein the area surrounding the pair of vias free of the ground plane layer is oriented substantially at a 45 degree angle relative to the columns of the second signal launches. 12. The printed circuit board of claim 7, wherein for the pairs of vias corresponding to the differential pairs of the first differential connector and the second differential connector, a region between adjacent pairs of vias includes the ground plane layer. 13. A midplane having a first side to which contact ends of a first differential connector are connected and a second side opposite the first side to which contact ends of a second differential connector are connected, the midplane comprising: a plurality of first vias extending from the first side to the second side with the first vias providing first signal launches on the first side and second signal launches on the second side; the first signal launches are provided in a plurality of rows for electrically connecting to the contact ends of the first differential connector, with each row having first signal launches along a first line and first signal launches along a second line substantially parallel to the first line, and the first signal launches along the first and second lines are offset so that first signal launches along the first line and adjacent first signal launches along the second line correspond to differential pairs of the first differential connector; the second signal launches are provided in a plurality of columns for electrically connecting to the contact ends of the second differential connector, with each column having second signal launches along a third line and second signal launches along a fourth line substantially parallel to the third line, and the second signal launches along the third and fourth lines are offset so that second signal launches along the third line and adjacent second signal launches along the fourth line correspond to differential pairs of the second differential connector; and a plurality of second vias extending from the first side to the second side with the second vias providing first ground launches on the first side and second ground launches on the second side. 14. The midplane of claim 13, wherein the first and second lines are orthogonal to the third and fourth lines. 15. The midplane of claim 13, wherein for a surface area on the first side and the same surface area on the second side, the number of first signal launches equals the number of second signal launches. 16. The midplane of claim 13, which further comprises: at least one ground plane layer with the plurality of first vias and second vias extending therethrough; and for each pair of the first vias corresponding to a differential pair of the first differential connector and the second differential connector, an area surrounding the pair of first vias is free of the ground plane layer and each first via of the pair is electrically isolated from the other. 17. The midplane of claim 16, wherein the area surrounding the pair of first vias free of the ground plane layer is oriented substantially at a 45 degree angle relative to the rows of the first signal launches and the columns of the second signal launches. 18. The midplane of claim 13, wherein for each row of first signal launches, the first ground launches are provided along a line adjacent to and substantially parallel to either the first line or the second line of the first signal launches, and for each column of second signal launches, the second ground launches are provided along a line adjacent to and substantially parallel to either the third line or the fourth line of the second signal launches. 19. The midplane of claim 18, wherein for each row of first signal launches, the number of corresponding first ground launches is greater than the number of differential pairs provided by the row, and for each column of second signal launches, the number of corresponding second ground launches is greater than the number of differential pairs provided by the column. 20. An interconnection system comprising: a printed circuit board having a first surface and second surface; a first connector mounted on the first surface, the first connector having a plurality of signal conductors, each of the signal conductors having a mating contact portion and a contact tail, with the plurality of signal conductors positioned in pairs with a first signal conductor of each pair having a contact tail offset from the mating contact portion of the first signal conductor in a first direction and a second signal conductor of each pair offset from the mating contact portion of the second signal conductor in a second direction; and a second connector mounted on the second surface, the second connector having a plurality of signal conductors, each of the signal conductors having a mating contact portion and a contact tail, with the plurality of signal conductors positioned in pairs with a first signal conductor of each pair having a contact tail offset from the mating contact portion of the first signal conductor in a third direction and a second signal conductor of each pair offset from the mating contact portion of the second signal conductor in a fourth direction. 21. The interconnection system of claim 20, wherein the printed circuit board comprises a plurality of pairs of vias extending between the first surface and the second surface, with a first via of each of the pairs of vias receiving a contact tail of a first signal conductor of a pair of signal conductors in the first connector and a contact tail of a first signal conductor of a pair of signal conductors in the second connector and a second via of each of the pairs of vias receiving a contact tail of a second signal conductor of the pair of signal conductors in the first connector and a contact tail of a second signal conductor of the pair of signal conductors in the second connector. 22. The interconnection system of claim 20, wherein the first direction is opposite the second direction. 23. The interconnection system of claim 20, wherein the first direction is orthogonal to the third direction. 24. The interconnection system of claim 20, wherein the plurality of signal conductors in the first connector are positioned in a plurality of parallel columns in a fifth direction, with the mating contact portion of the first signal conductor in each pair offset from the mating contact portion of the second signal conductor in each pair in the fifth direction. 25. The interconnection system of claim 24, wherein the plurality of signal conductors in the second connector are positioned in a plurality of parallel columns in a sixth direction, with the mating contact portion of the first signal conductor in each pair offset from the mating contact portion of the second signal conductor in each pair in the sixth direction, and the fifth direction is orthogonal to the sixth direction. 26. The interconnection system of claim 25, wherein the first connector additionally comprising a plurality of shield members disposed between adjacent columns of signal conductors. 27. An interconnection system comprising: a printed circuit board having a first surface and a second surface and a plurality of pairs of adjacent vias formed therebetween; a first connector mounted on the first surface, the first connector having a plurality of pairs of signal conductors positioned with a first pair-wise orientation; a second connector mounted on the second surface, the second connector having a plurality of pairs of signal conductors positioned with a second pair-wise orientation transverse to the first pair-wise orientation, wherein each of the plurality of pairs of signal conductors in the first connector are connected directly through a pair of vias in the printed circuit board to a pair of signal conductors in the second connector. 28. The interconnection system of claim 27, wherein each of the signal conductors in the first connector comprises a contact tail, each of the contact tails inserted into a via through the first surface. 29. The interconnection system of claim 28, wherein each of the signal conductors in the second connector comprises a contact tail, each of the contact tail inserted into a via through the second surface. 30. The interconnection system of claim 29, wherein the contact tails of the signal conductors of each pair of signal conductors in the first connector are centered along a first axis, the first axis transverse to the first pair-wise orientation. 31. The interconnection system of claim 30, wherein the first axis is offset from the first pair-wise orientation by about 45 degrees. 32. The interconnection system of claim 29, wherein the contact tails of the signal conductors of each pair of signal conductors in the second connector are centered along a second axis, the second axis offset from the second pair-wise orientation by about 45 degrees. 33. An interconnection system comprising an electrical connector, the electrical connector comprising: a plurality of signal conductors, each signal conductor having a contact tail and a mating contact portion, wherein the signal conductors are disposed in pairs, each pair having a first mating portion and a second mating portion positioned along a first axis and a first contact tail and a second contact tail positioned along a second axis; and the first axis is offset angularly from the second axis by approximately 45 degrees.