Communications jack having a flexible substrate with a cantilevered finger with a crosstalk compensation circuit

• US 9,893,481 B2
• Filed: 02/02/2017
• Issued: 02/13/2018
• Est. Priority Date: 09/07/2012
• Status: Active Grant

• Current Assignee: Commscope Inc of North Carolina (CommScope Holding Company, Inc.)
• Original Assignee: Commscope Inc of North Carolina (CommScope Holding Company, Inc.)
• Inventors: Fitzpatrick, Brian J.
• Primary Examiner(s): Prasad, Chandrika
• Application Number:
  US15/423,422
• Publication Number:
  US 20170149185A1
• Time in Patent Office: 376 Days
• Field of Search: 439676, 439941
• CPC Class Codes: H01R 13/6461 Means for preventing cross-talk
• 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 13/6467 by cross-over of signal conductors
• CPC Class Codes: H01R 13/6469 on substrates
• CPC Class Codes: H01R 24/00 Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure contact members H01R13/02; securing contact members in or to a base or case or insulating of contact members H01R13/40; bases or cases H01R13/46; means for supporting coupling part when not engaged H01R13/60; means for facilitating engagement or disengagement of coupling parts or for holding them in engagement H01R13/62; means for preventing, inhibiting or avoiding incorrect coupling H01R13/64
• 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 1/0239 Signal transmission by AC coupling
• CPC Class Codes: H05K 1/147 at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit H05K1/148 takes precedence
• CPC Class Codes: H05K 1/162 incorporating printed capacitors
• CPC Class Codes: H05K 2201/10189 Non-printed connector

Abstract

Communications jacks include at least first through third jackwire contacts and a flexible substrate that has a first finger and a second finger. The first jackwire contact and the third jackwire contact are each mounted on the first finger and the second jackwire contact is mounted on the second finger.

Claims

1. A communications jack, comprising:

a first jackwire contact;

a second jackwire contact; and

a flexible substrate that has a first cantilevered finger, the flexible substrate including a first conductive path that is electrically connected to the first jackwire contact and a second conductive path that is electrically connected to the second jackwire contact, and the first cantilevered finger includes a crosstalk compensation circuit.

2. The communications jack of claim 1, wherein the flexible substrate comprises a flexible printed circuit board.

3. The communications jack of claim 1, wherein the first jackwire contact and the second jackwire contact are substantially aligned in a first row, the communications jack further comprising a third jackwire contact and a fourth jackwire contact that are substantially aligned in a second row that is offset from the first row.

4. The communications jack of claim 1, wherein the communications jack comprises an RJ-45 jack.

5. The communications jack of claim 1,

wherein a first end of the first jackwire contact and a first end of the second jackwire contact are mounted on the first cantilevered finger, and a capacitive crosstalk compensation circuit is provided on the first cantilevered finger.

6. The communications jack of claim 5, the flexible substrate further comprising a second cantilevered finger, wherein a second end of the first jackwire contact is mounted on the second cantilevered finger and a second end of the second jackwire contact is mounted on the second cantilevered finger.

7. The communications jack of claim 6, wherein the second cantilevered finger further includes an inductive crosstalk compensation circuit formed by running a portion of a first conductive path that connects to the first jackwire contact immediately adjacent to a portion of a second conductive path that connects to the second jackwire contact.

8. The communications jack of claim 6, further comprising a third jackwire contact that is positioned between the first jackwire contact and the second jackwire contact.

9. The communications jack of claim 8, wherein a first end of the third jackwire contact is mounted on a third cantilevered finger of the flexible substrate and a second end of the third jackwire contact is mounted on a fourth cantilevered finger of the flexible substrate.

10. The communications jack of claim 1, wherein the crosstalk compensation circuit comprises a portion of the first conductive path that is on the first cantilevered finger that runs immediately adjacent to a portion of the second conductive path that is on the first cantilevered finger.

11. The communications jack of claim 10, wherein a first end of the first jackwire contact is received within an aperture in a second cantilevered finger and a second end of the first jackwire contact is received within a first aperture in the first cantilevered finger.

12. The communications jack of claim 11, wherein a first end of the second jackwire contact is received within an aperture in a third cantilevered finger and a second end of the second jackwire contact is received within a second aperture in the first cantilevered finger.

13. The communications jack of claim 12, wherein the first cantilevered finger is cantilevered forwardly and the second and third cantilevered fingers are cantilevered rearwardly.