Modular connector plug for high speed data transmission networks

• US 10,439,329 B2
• Filed: 10/18/2017
• Issued: 10/08/2019
• Est. Priority Date: 07/21/2015
• Status: Active Grant

• Current Assignee: Bel Fuse Limited (Bel Fuse)
• Original Assignee: Bel Fuse Limited (Bel Fuse)
• Inventors: Marowsky, Richard D., Belopolsky, Yakov, Gutter, David H.
• Primary Examiner(s): Vu, Hien D
• Application Number:
  US15/786,795
• Publication Number:
  US 20180040987A1
• Time in Patent Office: 720 Days
• Field of Search: 439676, 439660, 439951
• CPC Class Codes: H01R 13/6463 using twisted pairs of wires
• CPC Class Codes: H01R 13/6466 on substrates, e.g. printed circuit boards [PCB]
• CPC Class Codes: H01R 13/665 with built-in electronic circuit H01R13/70, H01R13/719 take precedence
• CPC Class Codes: H01R 24/28 Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
• 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 1/117 Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
• CPC Class Codes: H05K 2201/09063 Holes or slots in insulating substrate not used for electrical connections
• CPC Class Codes: H05K 2201/10295 Metallic connector elements partly mounted in a hole of the PCB
• CPC Class Codes: H05K 2201/10356 Cables

Abstract

A modular connector plug includes controlled capacitances to compensate for near end cross talk at the connector interface created by interaction of signals having signal frequencies in a data transmission bandwidth. A printed circuit board (PCB) is configured to receive cable pairs, and a connector assembly includes first and fourth plug contacts corresponding to the first cable pair and second and third plug contacts corresponding to the second cable pair. First ends of each contact are connected to the PCB, and second ends extend in parallel with each other and transversely to the PCB length, collectively defining a contact interface proximate the contact end. Each contact has a maximum width at the contact interface, with at least one plug contact having a maximum width greater than the maximum width of another plug contact. Each contact accordingly defines an electrode of a compensating capacitance formed between adjacent pairs of plug contacts.

Claims

1. A modular connector plug for forming a connector interface with a connector jack in a high speed data transmission network, the connector plug comprising:

a printed circuit board (PCB) including a length defined from a contact end to a cable end opposite the contact end;

at least a first cable pair comprising first and second cables and a second cable pair comprising third and fourth cables connected to the PCB; and

a connector assembly including a first plug contact electrically coupled to the first cable, a fourth plug contact electrically coupled to the second cable, a second plug contact electrically coupled to the third cable, and a third plug contact electrically coupled to the fourth cable,

wherein each of the plug contacts further comprises;

a first end connected to the PCB, a second end, and

a bridge portion having a length between the first end and the second end and having a width oriented perpendicular to the length and the first and second ends,

wherein each bridge portion and second end of the respective plug contacts extends in parallel with each other and in transverse orientation with respect to the PCB length, further collectively defining a contact interface proximate the contact end, and

a bridge portion of at least one of the plug contacts having a maximum width greater than the maximum width of a bridge portion of another plug contact, and

wherein each plug contact defines an electrode of a compensating capacitance formed between adjacent pairs of plug contacts, each compensating capacitance defined at least partially by a distance between the respective adjacent pair of plug contacts at the contact interface.

2. The connector plug of claim 1, further comprising:

a first compensating capacitance defined between the first and second plug contacts;

a second compensating capacitance defined between the third and fourth plug contacts; and

wherein the first and second compensating capacitances are defined to compensate for near end cross talk at the connector interface created by interaction of signals having signal frequencies in a data transmission bandwidth.

3. The connector plug of claim 1, wherein the PCB further comprises a plurality of through holes configured to receive the respective first ends of the plug contacts;

and

each plug contact is further configured wherein upon connecting the first end via a through hole of the PCB, the second end overhangs the contact end of the PCB.

4. The connector plug of claim 1, wherein each plug contact is approximately staple shaped.

5. The connector plug of claim 1, wherein each of the first and second ends for each plug contact are at least coincident with a lower plane of the PCB.

6. The connector plug of claim 1, wherein the at least one plug contact includes a protrusion extending from only one side of the plug contact in a direction towards an adjacent plug contact.

7. The connector plug of claim 1, further comprising an insulative material at least partially covering the plug contacts,

wherein a first compensating capacitance is defined proximate the contact interface by the insulative material as between the first and second plug contacts,

wherein a second compensating capacitance is defined by the insulative material as between the third and fourth plug contacts, and

wherein the first and second compensating capacitances are defined to compensate for near end cross talk at the connector interface created by interaction of signals having signal frequencies in a data transmission bandwidth.

8. The connector plug of claim 1, wherein the PCB further comprises an air gap located between two adjacent conductor traces.

9. The connector plug of claim 8, further comprising:

an insulative plug body having an interior configured to laterally receive the PCB and an exposed face portion corresponding to the contact interface when the PCB is received therein; and

a conductive shield positioned corresponding with the air gap of the PCB when the PCB is received therein, the shield including a planar section extending in a direction transverse to a longitudinal axis of the air gap.

10. The connector plug of claim 9, wherein the conductive shield further comprises flanged portions extending from the planar section along a plane parallel to a surface of the PCB.