Communication plug with improved crosstalk

• US 9,595,771 B2
• Filed: 03/10/2014
• Issued: 03/14/2017
• 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:
  US14/202,166
• Publication Number:
  US 20140187077A1
• Time in Patent Office: 1,100 Days
• Field of Search: 439/418, 439/404, 439/676, 439/941, 439/76.1, 439/344
• US Class Current: 1/1
• 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 molded body contained within the plug cavity;

a circuit board wrapped around the body;

first contacts for making electrical contact between traces on the circuit board and the cable; 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 the circuit board is a flexible printed circuit board.

3. The communication plug of claim 2, wherein the molded body has a generally triangular cross-section, and wherein the flexible circuit board is wrapped around the body so that first and second ends of the flexible circuit board are located in the plug body closest to where the communication cable enters the cavity.

4. The communication plug of claim 3, wherein a first subset of IDCs are press-fit into holes in the body at the first end of the circuit board and second subset of IDCs are press-fit into holes in the body at the second end of the circuit board, and wherein the first and second subsets of IDCs make electrical contact with wires in the communication cable and with traces on the circuit board.

5. The communication plug of claim 1, wherein the second contacts are contact pads disposed on the circuit board.

6. 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.

7. The communication plug of claim 1, wherein the circuit board comprises a plurality of surface mount chokes positioned in pockets in the body.