Capacitive crosstalk compensation arrangement for communication connectors

• US 6,176,742 B1
• Filed: 06/25/1999
• Issued: 01/23/2001
• Est. Priority Date: 06/25/1999
• Status: Expired due to Term

• Current Assignee: CommScope Inc. (CommScope Holding Company, Inc.)
• Original Assignee: Avaya Incorporated
• Inventors: Goodrich, Robert Ray, Arnett, Jaime Ray, Hashim, Amid Ihsan
• Primary Examiner(s): Nguyen, Khiem
• Assistant Examiner(s): HYEON, HAE M
• Application Number:
  US09/344,831
• Time in Patent Office: 578 Days
• Field of Search: 439/676, 439/620, 439/941
• US Class Current: 439/620.23
• CPC Class Codes: H01R 13/6464 by adding capacitive elements
• CPC Class Codes: H01R 13/6466 on substrates, e.g. printed circuit boards [PCB]
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45
• CPC Class Codes: Y10S 439/941 Crosstalk suppression

Abstract

Capacitive crosstalk compensation coupling is achieved in a communication connector by the use of a capacitor compensation assembly. The assembly includes a housing constructed to be associated with a communication connector having elongated terminal contact wires. One or more crosstalk compensation capacitors are supported in the housing. Each compensation capacitor includes a first electrode having a first terminal, a second electrode having a second terminal, and a dielectric spacer is disposed between the first and the second electrodes. The terminals of the electrodes are exposed at positions outside of the housing so that selected terminal contact wires of the connector make electrical contact with corresponding terminals of the compensation capacitors to provide capacitive coupling between the selected contact wires when the contact wires are engaged by a mating connector.

Claims

1. A capacitor compensation assembly for crosstalk compensation in a communication connector having elongated terminal contact wires, comprising:

a housing;

a first crosstalk compensation capacitor supported in the housing, the capacitor including

a first metallic electrode having a first terminal,

a second metallic electrode having a second terminal, and

a dielectric spacer disposed between the first and the second metallic electrodes;

wherein said housing is dimensioned and arranged to be associated with the communication connector, and the terminals of the metallic electrodes are exposed at positions outside the housing such that selected terminal contact wires of the connector make electrical contact with corresponding terminals of the electrodes to provide capacitive coupling between the selected contact wires when the contact wires are engaged by a mating connector and

wherein the terminals of said capacitor are spaced apart from one another by a distance that corresponds to an integer multiple of a center-to-center spacing between the terminal contact wires of said communication connector.

2. A capacitor compensation assembly according to claim 1, wherein a second crosstalk compensation capacitor is supported in said housing.

3. A capacitor compensation assembly according to claim 2, wherein the first and the second crosstalk compensation capacitors are supported in said housing so that the terminals of the electrodes of the capacitors are aligned to correspond with selected terminal contact wires of the connector.

4. A capacitor compensation assembly according to claim 2, wherein corresponding terminals of the first and the second capacitors are offset from one another by a distance which corresponds to a center-to-center spacing between the terminal contact wires of said communication connector.

5. A communication jack connector, comprising:

a jack frame having a front surface and a plug opening in the front surface, wherein the plug opening has an axis and is formed to receive a mating plug connector;

a number of elongated terminal contact wires extending through the jack frame, wherein the contact wires are configured to make electrical contact with corresponding terminals of the mating connector;

a capacitor compensation assembly including one or more crosstalk compensation capacitors, wherein the assembly is mounted in a part of the connector in operative relation to the terminal contact wires, and wherein each compensation capacitor includes

a first metallic electrode with a first terminal,

a second metallic electrode with a second terminal, and

a dielectric spacer disposed between the first and the second electrodes;

wherein the first and the second terminals of the metallic electrodes are located and configured so that free end portions of selected terminal contact wires make electrical contact with corresponding terminals of the electrodes to provide capacitive coupling between the selected contact wires when the contact wires are engaged by the mating connector; and

wherein the terminals of a given capacitor are spaced apart from one another by a distance that corresponds to an integer multiple of a center-to-center spacing between the free end portions of the terminal contact wires.

6. A communication jack connector according to claim 5, wherein the capacitor compensation assembly includes at least two crosstalk compensation capacitors, and the terminals of the electrodes of the capacitors are aligned is to correspond with selected ones of the terminal contact wires.

7. A communication jack connector according to claim 6, wherein terminals of one capacitor are offset from corresponding terminals of another capacitor by a distance that corresponds to a center-to-center spacing between the free end portions of the terminal contact wires.

8. A communication jack connector according to claim 5, including a wire board a portion of which is mounted within the jack frame, and said crosstalk compensation capacitors are supported on the wire board in the vicinity of the free end portions of the terminal contact wires.

9. A communication jack connector according to claim 8, including a terminal housing on the wire board, the terminal housing having a front wall facing the free end portions of the terminal contact wires, and the capacitor compensation assembly is mounted on the front wall of the terminal housing.

10. A communication jack connector according to claim 5, including a wire board a portion of which is mounted in said jack frame, and said wire board is constructed and arranged to provide one or more stages of crosstalk compensation.