High-speed connector with multi-stage compensation

• US 20100048040A1
• Filed: 08/20/2009
• Published: 02/25/2010
• Est. Priority Date: 08/20/2008
• Status: Active Grant

• Current Assignee: Panduit Corporation
• Original Assignee: Panduit Corporation
• Inventors: Straka, Frank M., Tellas, Ronald L.
• Granted Patent: US 8,137,141 B2
• Time in Patent Office: Days
• US Class Current: 439/55
• 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 24/64 for high frequency, e.g. RJ 45
• CPC Class Codes: H05K 1/0228 Compensation of cross-talk by a mutually correlated lay-out of printed circuit traces, e.g. for compensation of cross-talk in mounted connectors balanced signal pairs H05K1/0245
• CPC Class Codes: H05K 1/0245 Lay-out of balanced signal pairs, e.g. differential lines or twisted lines
• CPC Class Codes: H05K 1/162 incorporating printed capacitors
• CPC Class Codes: H05K 2201/10189 Non-printed connector

Abstract

A communication connector uses compensation circuitry to compensate for crosstalk in a network connection. Portions of the compensation circuitry are placed on a flexible circuit board that makes conductive contact with plug interface contacts of the connector. Additional compensation circuitry is provided on a rigid circuit board within the connector.

Claims

1. A communication jack for use in a communication network, said jack having a plurality of plug interface contacts for making conductive contact with contacts of a plug, said communication jack comprising:

eight current-carrying paths through the communication jack, said current-carrying paths comprising first, second, third, and fourth differential pairs of conductors, each of said differential pairs comprising a first and a second conductive pathway;

compensation circuitry adapted to decrease the overall crosstalk when said communication jack is connected to a plug, said compensation circuitry comprising;

a first pad capacitor connected between the first conductive pathway of the first differential pair and the second conductive pathway of the second differential pair;

a second pad capacitor connected between the second conductive pathway of the first differential pair and the first conductive pathway of the second differential pair;

a third pad capacitor connected between the first conductive pathway of the second differential pair and the first conductive pathway of the fourth differential pair; and

a fourth pad capacitor connected between the second conductive pathway of the second differential pair and the second conductive pathway of the third differential pair;

wherein said first, second, third, and fourth capacitors are provided on a flexible circuit board in electrical contact with said plug interface contacts.

2. The communication jack of claim 1 further comprising a rigid circuit board containing additional compensation circuitry.

3. The communication jack of claim 1 wherein said plug interface contacts number eight and correspond to said eight current-carrying paths through said communication jack.

4. The communication jack of claim 2 further comprising a plurality of insulation displacement contacts connected to said rigid circuit board.

5. The communication jack of claim 1 wherein said plug interface contacts wrap around a nose of said jack and wherein a top layer of said flexible circuit board makes contact with said plug interface contacts in the area of said nose.

6. The communication jack of claim 2 wherein said additional compensation circuitry on said rigid circuit board comprises crosstalk compensation circuitry for compensating crosstalk between the first and fourth differential pairs.

7. The communication jack of claim 6 wherein said additional compensation circuitry on said rigid circuit board further comprises crosstalk circuitry for compensating crosstalk between the second and third differential pairs.

8. The communication jack of claim 7 wherein said additional compensation circuitry on said rigid circuit board further comprises crosstalk circuitry for compensating crosstalk between the second and fourth differential pairs.

9. The communication jack of claim 8 wherein said additional compensation circuitry on said rigid circuit board further comprises second stage lattice network crosstalk between the first and second differential pairs.