Jack including crosstalk compensation for printed circuit board

• US 6,428,362 B1
• Filed: 06/06/2000
• Issued: 08/06/2002
• Est. Priority Date: 08/20/1999
• Status: Expired

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Phommachanh, Chansy
• Primary Examiner(s): TA, THO DAC
• Application Number:
  US09/587,939
• Time in Patent Office: 791 Days
• Field of Search: 439/941, 439/676, 439/76.1, 333/1
• US Class Current: 439/676
• CPC Class Codes: H01R 13/6466 on substrates, e.g. printed circuit boards [PCB]
• 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 1/162 incorporating printed capacitors
• CPC Class Codes: H05K 2201/09236 Parallel layout layout of balanced signal pairs H05K1/0245; superposed layout H05K2201/09672
• CPC Class Codes: H05K 2201/10189 Non-printed connector
• CPC Class Codes: Y10S 439/941 Crosstalk suppression

Abstract

A forward-reverse crosstalk compensation method is provided for compensating capacitance/inductance on a printed circuit board of a connector. The method includes a forward compensation process and a reverse compensation process. The forward compensation process compensates the unbalanced capacitance in the plug of the connector by using the parallel conductive lines or wires. The reverse compensation process can be used to compensate the unbalance capacitance/inductance caused by the forward compensations in the same pair combination of the connector. In both forward compensation and reverse compensation processes, electro-magnetic fields, such as capacitors, can be formed to balance the capacitance/inductance on the printed circuit board of the connector.

Claims

1. A method of compensating cross-talk in a connector arrangement which includes a plug and a circuit board, comprising:

forward compensating unbalanced capacitance in the plug; and

reverse compensating unbalanced capacitance and inductance caused by the forward compensation.

2. The method of claim 1, wherein the forward compensating includes forming a capacitor by using additional parallel conductive lines on the circuit board, and the reverse compensating includes forming a capacitor by using additional parallel lines on the circuit board.

3. A connector arrangement for compensating cross-talk, comprising:

a circuit board with front and rear terminals;

a plurality of pairs of conductors disposed on the circuit board, the pairs of conductors connecting to respective front and rear terminals, each pair of conductors including a ring conductor and a tip conductor, and the ring and tip conductors being substantially disposed in parallel;

a forward-compensating capacitance for compensating unbalanced capacitance, proximate the front terminals; and

a reverse-compensating capacitance for compensating unbalanced capacitance and inductance caused by the forward-compensating capacitance, proximate the rear terminals.

4. The connector arrangement of claim 3, wherein the forward-compensating capacitance is formed by using additional parallel conductors on the circuit board, and the reverse-compensating capacitance is formed by using additional parallel conductors on the circuit board.

5. The connector arrangement of claim 3, wherein the front terminals include contact springs.

6. The connector arrangement of claim 3, wherein the rear terminals include insulation displacement connectors.

7. The connector arrangement of claim 3, further comprising a housing holding the circuit board, the housing defining a plug port for receipt of a plug of a telecommunications cable.

8. The connector arrangement of claim 3, wherein the plurality of pairs of conductors are disposed on one side of the circuit board.