Communication plug with improved crosstalk

• US 8,690,598 B2
• Filed: 10/21/2010
• Issued: 04/08/2014
• Est. Priority Date: 10/21/2010
• Status: Active Grant

• Current Assignee: Panduit Corporation
• Original Assignee: Panduit Corporation
• Inventors: Bolouri-Saransar, Masud, Nordin, Ronald A., Wachtel, Paul W., Babu, Surendra Chitti
• Primary Examiner(s): CHUNG TRANS, XUONG MY
• Application Number:
  US12/909,030
• Publication Number:
  US 20120100744A1
• Time in Patent Office: 1,265 Days
• Field of Search: 439/404, 439/417, 439/418, 439/676, 439/941
• US Class Current: 439/404
• CPC Class Codes: H01R 11/20 End pieces terminating in a needle point or analogous contact for penetrating insulation or cable strands
• CPC Class Codes: H01R 12/675 with contacts having at least a slotted plate for penetration of cable insulation, e.g. insulation displacement contacts for round conductor flat cables
• CPC Class Codes: H01R 13/6469 on substrates
• CPC Class Codes: H01R 13/6658 on printed circuit board H01R13/6666 - H01R13/6691 take precedence
• CPC Class Codes: H01R 13/719 specially adapted for high frequency, e.g. with filters
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45
• CPC Class Codes: H01R 4/24 Connections using contact members penetrating or cutting insulation or cable strands
• CPC Class Codes: H05K 1/0245 Lay-out of balanced signal pairs, e.g. differential lines or twisted lines
• CPC Class Codes: H05K 2201/10295 Metallic connector elements partly mounted in a hole of the PCB
• CPC Class Codes: H05K 2201/10356 Cables
• CPC Class Codes: H05K 2201/1059 Connections made by press-fit insertion
• CPC Class Codes: H05K 3/325 by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor adaptations of leads inserted in holes for press-fit connections H05K3/308

Abstract

A communication plug having a plug body and a plurality of contact pairs at least partially within the plug body, the contact pairs including an inherent asymmetric coupling between individual contacts of one of the contact pairs and other individual contacts of another of the contact pairs. Second asymmetric coupling elements are connected between the individual contacts of one of the contact pairs and the other individual contacts of another of the contact pairs. The second asymmetric coupling elements, when combined with the inherent asymmetric coupling, provide a balanced symmetric coupling between the individual contacts of one of the contact pairs and the other individual contacts of another of the contact pairs.

Claims

1. A communication plug for making electrical contact between a communication cable and a communication jack, comprising:

a plug body having a cavity for receiving the communication cable, wherein the communication cable enters the plug body along an axis;

a circuit board located in the cavity and having a plurality of traces wherein the circuit board has at least one surface that is angled relative to the axis;

first contacts for making electrical contact between traces on the circuit board and the cable wherein said first contacts are arranged in a staggered configuration such that a contact for a particular wire-pair is equidistant to both contacts for a different wire-pair; and

second contacts for making electrical contact between the traces on the circuit board and contacts on a jack to which the plug is interfaced.

2. The communication plug of claim 1, wherein said plurality of traces are arranged to provide coupling between at least two of the plurality of traces.

3. The communication plug of claim 1, wherein the communication cable has eight wires arranged in four pairs, wherein the first contacts are eight insulation displacement contacts (IDCs) arranged in four IDC pairs for making electrical contact with corresponding ones of the eight wires, wherein the second contacts are eight contacts, and wherein the circuit board has eight traces extending between the IDCs and the eight contacts.

4. The communication plug of claim 3, wherein the IDCs are press-fit into holes in the circuit board.

5. The communication plug of claim 4, wherein a first subset of the IDCs are press-fit into a top side of the circuit board and a second subset of the IDCs are press-fit into a bottom side of the circuit board.

6. The communication plug of claim 3, wherein the holes are arranged in a staggered configuration to provide balanced coupling adjacent IDC pairs.

7. The communication plug of claim 1, wherein the second contacts are press-fit into holes on the circuit board.

8. The communication plug of claim 7, wherein a subset of the holes for the second contacts are staggered.

9. The communication plug of claim 8, wherein first subset of the second contacts has a different shape from that of a second subset of the second contacts.

10. The communication plug of claim 1, wherein the at least one surface is angled in the range of approximately 1 degree to 10 degrees relative to the axis.

11. The communication plug of claim 1, wherein the circuit board has a length and the cavity has a length, width, and height, each of said cavity length, width, and height being shorter than the length of the circuit board.

12. The communication plug of claim 1, wherein the circuit board includes a plurality of layers, said plurality of traces being arranged on said plurality of layers, and wherein the circuit board includes a crossover of at least two of the plurality of traces.

13. The communication plug of claim 1, wherein the circuit board comprises a common mode choke for each pair of the traces on the circuit board.

14. The communication plug of claim 13, wherein the common mode choke is a surface mount choke.