Electrical connector for reducing electrical crosstalk and common mode electromagnetic interference

• US 6,280,256 B1
• Filed: 04/01/1999
• Issued: 08/28/2001
• Est. Priority Date: 04/01/1999
• Status: Expired due to Term

• Current Assignee: FCI Americas Technology Incorporated (FCI)
• Original Assignee: Berg Technology, Inc.
• Inventors: Belopolsky, Yakov, Potteiger, Lee W.
• Primary Examiner(s): Sircus, Brian
• Assistant Examiner(s): Prasad, Chandrika
• Application Number:
  US09/285,106
• Time in Patent Office: 880 Days
• Field of Search: 439/676, 439/941, 439/344, 439/188, 439/638, 333/1, 333/12
• US Class Current: 439/676
• CPC Class Codes: H01R 13/6461 Means for preventing cross-talk
• CPC Class Codes: H01R 13/6473 Impedance matching
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45
• CPC Class Codes: Y10S 439/941 Crosstalk suppression

Abstract

Inserts for use in fabricating modular jack connectors. The inserts include conductors having a rectangular cross section. A first insert includes a plurality of groups of conductive leads that extend across a top wall in first and second common planes toward a front end. A first group of leads form a terminal edge by extending toward the rear end of the first insert in a first common oblique plane. A second group extends angularly toward the front end from the second common plane in a second common oblique plane to form a second terminal edge which extends beyond the first terminal edge. A third group may be provided that extend across portions of the top wall in both the first and second common planes. The first and second oblique planes intersect to form a first contact area. A second insert includes a plurality of groups of conductive leads that extend across a top wall in third and fourth common planes. A third group forms a terminal edge by extending toward the rear end of the second insert in a third common oblique plane. A fourth group extends angularly from the fourth common plane toward the front end in a fourth common oblique plane to form a fourth terminal edge which extends beyond the third terminal edge. The third and fourth oblique planes intersect to form a second contact area.

Claims

1. An insulative insert having contacts for signal transmission, comprising:

a front end, a rear end, a bottom wall, and a top wall, said top wall defining grooves therein;

a first plurality of conductive leads extending from said bottom wall of the insulative insert and across said top wall in a first common plane toward said front end of said insert, thereafter said first plurality of conductive leads forming a first terminal edge by extending toward said rear end of said insulative insert in a first common oblique plane;

a second plurality of conductive leads extending from said bottom wall of the insulative insert and across a portion of said top wall in a second common plane, and thereafter angularly toward the front end of said insulative insert in a second common oblique plane forming a second terminal edge which extends forward of said first terminal edge; and

a third plurality of conductive leads extending from said bottom wall of the insulative insert and across a first portion of said top wall in said first common plane and then along a second portion of said top wall in said second common plane, said third plurality of conductive leads then extending angularly toward the front end in said second common oblique plane to said second terminal edge;

wherein said first oblique plane and said second oblique plane intersect at a contact area.

2. The insulative insert of claim 1, wherein said first plurality of conductive leads and second plurality of conductive leads have different horizontal lengths as measured along said top wall of said insulative insert.

3. The insulative insert of claim 2, wherein said second conductive leads have an overall length between approximately 20 and 60% of said first conductive leads.

4. The insulative insert of claim 1, wherein predetermined ones of said first plurality of conductive leads and second plurality of conductive leads extend from said bottom wall to said top wall in two generally parallel planes.

5. The insulative insert of claim 1, wherein said second common plane is approximately 1.3 mm offset from said first common plane.

6. The insulative insert of claim 1, wherein each of said first and second plurality of conductive leads have a thickness between approximately 8 and 16 thousandths of an inch and a width between approximately 12 and 24 thousandths of an inch.

7. The insulative insert of claim 1, wherein said plurality of grooves comprises eight grooves, conductive leads are disposed in a fourth groove and a fifth groove of said eight grooves, and said conductive lead disposed within said fourth groove extends parallel and on top of a predetermined portion of said conductive lead disposed within said fifth groove.

8. The insulative insert of claim 7, wherein said fourth groove defines a tab to receive said conductive lead disposed within said fourth groove.

9. The insulative insert of claim 1, wherein said first common oblique plane is between approximately 23-29°

with respect to said top wall, and said terminal edge extends approximately 3 to 4 mm below an underside of said top wall.

10. The insulative insert of claim 9, wherein said second common oblique plane is angled at approximately 7-13°

with respect to said top wall.

11. The insulative insert of claim 1, wherein said first, second and third pluralities of conductive leads form said contact area.

12. The insulative insert of claim 1, wherein said third plurality of conductive leads have a rectangular cross section.

13. The insulative insert of claim 1, wherein each of said conductive leads comprises a flared portion to secure said conductive leads within said insulative insert.

14. The insulative insert of claim 1, said insulative insert adapted to be mounted within a modular jack connector assembly, and said modular jack connector assembly receiving said another connecting element.

15. The insulative insert of claim 1, wherein each of said first and second conductive leads each have a rectangular cross section.

16. The insulative insert of claim 1, wherein said conductive leads have a first pitch at a front of said insert and a second pitch at a rear of said insert, and wherein said second pitch is different than said first pitch.

17. The insulative insert of claim 16, wherein said first pitch is approximately 0.040 inches and said second pitch is approximately 0.050 inches.

18. The insulative insert of claim 1, wherein said conductive leads are plated only in said contact area.

19. A modular jack connector comprising:

a first insert, comprising;

a first plurality of conductive leads extending from a bottom wall of said first insert and across a top wall of said first insert in a first common plane, thereafter said first plurality of conductive leads forming a first terminal edge by extending toward the rear end of said first insert in a first common oblique plane; and

a second plurality of conductive leads extending from said bottom wall of said first insert and across a portion of said top wall of said first insert in a second common plane, and then angularly toward the front end of said first insert in a second common oblique plane having a second terminal edge which extends beyond the first terminal edge; and

a second insert, comprising;

a third plurality of conductive leads extending from a bottom of said second insert and across a top wall in third and fourth common planes, thereafter said third plurality of conductive leads forming a third terminal edge by extending toward the rear end of said second insert in a third common oblique plane; and

a fourth plurality of conductive leads extending from said bottom of said second insert, across said top wall of said second insert in said fourth common plane, and then angularly toward the front end of said second insert in a fourth common oblique plane to form a fourth terminal edge which extends beyond the third terminal edge,

wherein said first and said second oblique planes intersect at a first contact area, and said third and fourth oblique planes intersect at a second contact area.

20. The modular jack connector of claim 19, wherein said second insert is adapted to be mounted on top of said first insert.

21. The modular jack connector of claim 19, wherein each of said first, second, third and fourth pluralities of conductive leads comprise tail sections, said tail sections extending outward of a respective insert for mounting to a printed circuit board.

22. The modular jack connector of claim 19, wherein each of conductive lead of said first, second, third and fourth pluralities of conductive leads have a rectangular cross section.

23. The insulative insert of claim 19, wherein said conductive leads have a first pitch at a front of said insert and a second pitch at a rear of said insert, wherein said first pitch and said second pitch are different.

24. The insulative insert of claim 23, wherein said first pitch is approximately 0.040 inches and said second pitch is approximately 0.050 inches.

25. The insulative insert of claim 19, wherein said conductive leads are plated only in said contact area.

26. An electrical connector, comprising:

a housing having an open interior, a top surface and a front face with an opening in communication with said open interior;

a forwardly facing contact adjacent said front face, said forwardly facing contact having a first portion extending generally parallel to said top portion a first distance in a first plane and a second portion extending generally parallel to said top portion a second distance in a second plane; and

a rearwardly facing contact adjacent said front face and having a portion extending generally coplanar to said first portion of said forwardly facing contact a third distance greater than said first distance of said forwardly facing contact.

27. The electrical connector as recited in claim 26, further comprising a second rearwardly facing contact having a portion extending parallel to, but offset from, said first rearwardly facing contact.

28. An electrical connector assembly, comprising:

a housing with an interior section, a front and a rear;

a plurality of first contacts extending through said housing, into said interior section, and directed towards said rear of said housing; and

a plurality of second contacts extending through said housing, into said interior section, and directed towards said front of said housing;

wherein said plurality of second contacts includes a first group extending through said housing along a first common plane and a second group extending through said housing along a second common plane different than said first common plane.

29. The electrical connector assembly as recited in claim 28, wherein said plurality of first contacts extend through said housing along a first contact path, said first common plane partially coextensive with said first contact path.

30. The electrical connector assembly as recited in claim 29, wherein said second common plane is not coextensive with said first contact path.

31. The electrical connector assembly as recited in claim 28, wherein said first common plane is partially coextensive with said second common plane.

32. The electrical connector assembly as recited in claim 28, wherein said plurality of first contacts and said plurality of second contacts reside on an insert securable to said housing.