Communications jack having a flexible printed circuit board with a crosstalk compensation circuit and a slit

• US 10,050,385 B2
• Filed: 07/14/2017
• Issued: 08/14/2018
• Est. Priority Date: 09/07/2012
• Status: Expired due to Fees

• Current Assignee: CommScope Inc. (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Inc. (CommScope Holding Company, Inc.)
• Inventors: Hashim, Amid I., Larsen, Wayne D., Fitzpatrick, Brian J.
• Primary Examiner(s): Prasad, Chandrika
• Application Number:
  US15/649,663
• Publication Number:
  US 20170310052A1
• Time in Patent Office: 396 Days
• Field of Search: 439676, 43962022, 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
• CPC Class Codes: H05K 999/99 dummy group

Abstract

A communication jack has a housing with a printed circuit board mounted partially within the housing, a plurality of jackwire contacts mounted on the printed circuit board and a flexible printed circuit board mounted on at least two of the jackwire contacts, wherein the flexible printed circuit board includes a crosstalk compensation circuit and has at least one fold and/or slit.

Claims

1. A communications jack, comprising:

a housing;

a printed circuit board that is at least partially mounted within the housing;

a plurality of jackwire contacts mounted on the printed circuit board, wherein each jackwire contact has a base portion and a plug contact surface;

a first flexible printed circuit board that is mounted on at least two of the jackwire contacts, the first flexible printed circuit board including at least one crosstalk compensation circuit and at least one fold and/or slit.

2. The communications jack of claim 1, wherein the plurality of jackwire contacts comprises a first jackwire contact, a second jackwire contact, a third jackwire contact, a fourth jackwire contact, a fifth jackwire contact, a sixth jackwire contact, a seventh jackwire contact and an eighth jackwire contact, the fourth and fifth jackwire contacts forming a first differential pair of jackwire contacts, the first and second jackwire contacts forming a second, differential pair of jackwire contacts, the third and sixth jackwire contacts forming a third differential pair of jackwire contacts, and the seventh and eighth jackwire contacts forming a fourth differential pair of jackwire contacts, and wherein the at least one crosstalk compensation circuit comprises at least one capacitor coupled between the third jackwire contact and the fifth jackwire contact.

3. The communications jack of claim 2, further comprising a second flexible printed circuit board that is mounted on the fourth jackwire contact and the sixth jackwire contact, the second flexible printed circuit board including a second crosstalk compensation circuit that comprises at least one capacitor coupled between the fourth jackwire contact and the sixth jackwire contact.

4. The communications jack of claim 1, wherein the first crosstalk compensation circuit comprises a pair of inductively coupling traces on the first flexible printed circuit board or at least one trace that inductively couples with one of the jackwire contacts.

5. The communications jack of claim 1, further comprising a second flexible printed circuit board, wherein the base portion of each of the plurality of jackwire contacts is mounted in the second flexible printed circuit board.

6. The communications jack of claim 1, wherein the first flexible printed circuit board includes at least two slits.

7. The communications jack of claim 4, wherein the first crosstalk compensation circuit comprises a pair of inductively coupling traces on the first flexible printed circuit board.

8. The communications jack of claim 4, wherein the first crosstalk compensation circuit comprises at least one trace that inductively couples with one of the jackwire contacts.