Modular connectors with compensation structures

• US 6,409,547 B1
• Filed: 12/02/1999
• Issued: 06/25/2002
• Est. Priority Date: 12/02/1998
• Status: Expired due to Term

• Current Assignee: Nordx/CDT Inc. (Belden Inc.)
• Original Assignee: Nordx/CDT Inc. (Belden Inc.)
• Inventors: Reede, Ivan
• Primary Examiner(s): Sircus, Brian
• Assistant Examiner(s): Zarroli, Michael C.
• Application Number:
  US09/452,709
• Time in Patent Office: 936 Days
• Field of Search: 439/620, 439/941, 776/76
• US Class Current: 439/676
• CPC Class Codes: H01R 13/6464 by adding capacitive elements
• CPC Class Codes: H01R 13/6474 by variation of conductive properties, e.g. by dimension variations
• CPC Class Codes: H01R 13/6608 with built-in single component H01R13/68, H01R13/70 take precedence
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45
• CPC Class Codes: Y10S 439/941 Crosstalk suppression

Abstract

A high performance modular connector system includes a plug and a jack both arranged for high frequency data transmission. The plug is constructed for coupling in a mating arrangement with the jack both including a plurality of contacts arranged to provide conductive paths for carrying a high-frequency data signal. The connector system includes several counter-coupling or compensation structures, each having a specific function in cross-talk reduction. The compensation structures are designed to offset and thus electrically balance frequency-dependent capacitive and inductive coupling. One important type of the compensation structure is located near contact points forming the conductive paths between connector terminals of the jack and connector terminals of the plug. This compensation structure is conductively connected to at least some of the contacts and is located outside the conductive path carrying the high-frequency data signal. This compensation structure may be connected to contacts of the jack or contacts of the plug.

Claims

1. A high frequency data connector comprising:

a plug constructed for coupling in a mating arrangement with a jack both including a plurality of contacts arranged to provide conductive paths for carrying a plurality of high-frequency data signal; and

a compensation structure located near contact points forming said conductive paths between connector terminals of said jack and connector terminals of said plug, said compensation structure being conductively connected to at least some of said contacts, being located outside said conductive path carrying said high-frequency data signal and being arranged to provide compensation signals that balance a selected amount of cross-talk generated in said connector;

wherein said jack includes a compensation insert including said contacts arranged to form cantilever springs mounted on said compensation insert.

2. The connector of claim 1 wherein said compensation signals are substantially independent of a relative height between said cantilever springs.

3. A high frequency data connector comprising:

a plug constructed for coupling in a mating arrangement with a jack both including a plurality of contacts arranged to provide conductive paths for carrying a plurality of high-frequency data signal; and

a compensation structure located near contact points forming said conductive paths between connector terminals of said jack and connector terminals of said plug, said compensation structure being conductively connected to at least some of said contacts, being located outside said conductive path carrying said high-frequency data signal and being arranged to provide compensation signals that balance a selected amount of cross-talk generated in said connector;

wherein said compensation structure includes capacitive balancers.

4. The connector of claim 3 wherein said balancers are located inside a housing of said jack and being conductively connected less than few millimeters from said contact points.

5. The connector of claim 3 wherein said balancers are located outside a housing of said jack.

6. A connector providing counter coupling including a plug and a jack having a plug receiving cavity, said jack comprising:

a plurality of contacts juxtaposed side-by-side and arranged in a single row;

said contacts including a cantilever spring contacts mounted to extend into said plug receiving cavity, said cantilever spring contacts having a mounted end and a moveable end; and

at least two of said spring contacts having capacitive coupling elements electrically connected to said moveable ends of said at least two spring contacts and located outside of a conductive path between said jack and said plug, said capacitive coupling elements providing capacitive coupling.

7. The connector of claim 6 wherein said plurality of contacts include eight connector terminals numbered 1-8 seriatim, and wherein said spring contacts number 1 and 3 are capacitively coupled by two of said capacitive coupling elements.

8. The connector of claim 7 wherein said spring contacts number 3 and 5 are capacitively coupled by two of said capacitive coupling elements.

9. The connector of claim 8 wherein said capacitive coupling elements, electrically connected to spring contacts number 1 and 5, are electrically isolated from each other.

13. The connector of claim 6 wherein said capacitive coupling elements includes at least two parallel conductive plates each electrically connected to one of said spring contacts.

14. The connector of claim 13 wherein said conductive plates are placed in an orientation perpendicular to the row of contacts and in parallel with a longitudinal direction of said cantilever spring contacts.

15. The connector of claim 13 wherein said conductive plates are placed in an orientation perpendicular to the row of contacts and perpendicular with a longitudinal direction of said cantilever spring contacts.

16. The connector of claim 13 wherein said conductive plates are placed in an orientation parallel to the row of contacts.

17. The connector of claim 16 wherein said plurality of contacts include eight connector terminals numbered 1-8 seriatim, and wherein said spring contacts number 1 and 3 are capacitively coupled by a first arrangement of said capacitive coupling elements, and wherein said spring contacts number 3 and 5 are capacitively coupled by a second arrangement of capacitive coupling elements.

12. A connector providing counter coupling including a plug and a jack having a plug receiving cavity, said jack comprising:

a plurality of contacts juxtaposed side-by-side and arranged in a single row;

said contacts including a cantilever spring contacts mounted to extend into said plug receiving cavity, said cantilever spring contacts having a mounted end and a moveable end; and

at least two of said spring contacts having capacitive coupling elements electrically connected to said moveable ends of said at least two spring contacts and located outside of a conductive path between said jack and said plug, said capacitive coupling elements providing capacitive coupling;

wherein said plurality of contacts include eight contacts numbered 1-8 seriatim, and wherein said spring contacts number 4 and 6 are capacitively coupled by two of said capacitive coupling elements;

wherein said spring contacts number 6 and 8 are capacitively coupled by two of said capacitive coupling elements;

wherein said capacitive coupling elements, electrically connected to spring contacts number 4 and 8, are electrically isolated from each other.

10. The connector of claim 12 wherein said plurality of contacts include eight contacts numbered 1-8 seriatim, and wherein said spring contacts number 4 and 6 are capacitively coupled by two of said capacitive coupling elements.

11. The connector of claim 10 wherein said spring contacts number 6 and 8 are capacitively coupled by two of said capacitive coupling elements.

18. A connector providing counter coupling including a plug and a jack having a plug receiving cavity, said jack comprising:

a plurality of contacts juxtaposed side-by-side and arranged in a single row;

said contacts including a cantilever spring contacts mounted to extend into said plug receiving cavity, said cantilever spring contacts having a mounted end and a moveable end; and

at least two of said spring contacts having capacitive coupling elements electrically connected to said moveable ends of said at least two spring contacts and located outside of a conductive path between said jack and said plug, said capacitive coupling elements providing capacitive coupling;

wherein said plurality of contacts include eight connector terminals numbered 1-8 seriatim, and wherein said spring contacts number 1 and 3 are capacitively coupled by a first arrangement of said capacitive coupling elements, and wherein said spring contacts number 3 and 5 are capacitively coupled by a second arrangement of capacitive coupling elements;

wherein said capacitive coupling elements include dielectric elements.

19. A connector providing counter coupling including a plug and a jack having a plug receiving cavity, said jack comprising:

a plurality of contacts juxtaposed side-by-side and arranged in a single row;

said contacts including a cantilever spring contacts mounted to extend into said plug receiving cavity, said cantilever spring contacts having a mounted end and a moveable end; and

at least two of said spring contacts having capacitive coupling elements electrically connected to said moveable ends of said at least two spring contacts and located outside of a conductive path between said jack and said plug, said capacitive coupling elements providing capacitive coupling;

wherein said plurality of connector terminals include eight connector terminals numbered 1-8 seriatim, and wherein said spring contacts number 4 and 6 are capacitively coupled by a first arrangement of said capacitive coupling elements, and wherein said spring contacts number 6 and 8 are capacitively coupled by a second arrangement of said capacitive coupling elements.

20. The connector of claim 19 wherein said capactive coupling elements include dielectric elements.

21. A connector providing counter coupling including a plug and a jack having a plug receiving cavity, said jack comprising:

a plurality of contacts juxtaposed side-by-side and arranged in a single row;

said contacts including a cantilever spring contacts mounted to extend into said plug receiving cavity, said cantilever spring contacts having a mounted end and a moveable end; and

at least two of said spring contacts having capacitive coupling elements electrically connected to said moveable ends of said at least two spring contacts and located outside of a conductive path between said jack and said plug, said capacitive coupling elements providing capacitive coupling;

wherein said plurality of connector terminals include eight connector terminals numbered 1-8 seriatim, and wherein said spring contacts number 1, 3 and 5 are capacitively coupled by a first set of said capacitive coupling elements, and said spring contacts number 4, 6 and 8 are capacitively coupled by a second set of said capacitive coupling elements.