Multiple-position modular connector employing shielded or filtered signal conductors for reducing electrical noise

• US 8,308,509 B2
• Filed: 11/03/2009
• Issued: 11/13/2012
• Est. Priority Date: 11/03/2009
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Karam, Roger A.
• Primary Examiner(s): VU, HIEN D
• Application Number:
  US12/611,398
• Publication Number:
  US 20110104942A1
• Time in Patent Office: 1,106 Days
• Field of Search: 439/578, 439/579, 439/676
• US Class Current: 439/579
• CPC Class Codes: H01R 13/6585 Shielding material individually surrounding or interposed between mutually spaced contacts
• CPC Class Codes: H01R 13/65915 Twisted pair of conductors surrounded by shield
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45

Abstract

A multiple-position modular connector (jack, plug or both) includes a rigid insulating body and a set of spaced-apart coaxial conductors carried by the body. Each coaxial conductor has a mating end at a mating portion of the body providing electrical connection between the inner signal conductor and a corresponding conductor of a mating modular connector. A conductive structure extends between the outer shield conductors of the coaxial conductors and a reference contact at an outer surface of the body to provide a high-frequency ground for the outer shield conductors. In another aspect, a modular connector includes a printed circuit board carried by an insulative body and employing some combination of well-matched conductive paths and filtering circuitry such as common-mode coils or “chokes”. Electrical traces of the printed circuit board may include ground/reference traces interspersed among signal traces to provide shielding and uniform electrical characteristics to the signal traces. Filtering circuitry when present is disposed on the PC board along the signal traces and acts to reduce the level of common-mode signal components reaching the mating contacts from the cable.

Claims

1. A multiple-coaxial conductor modular connector comprising:

a rigid insulating body having a back-end portion and a mating portion, the back-end portion configured to provide connections to a separate printed circuit board or cable, the mating portion configured to permit mating with a mating modular connector;

an array of spaced-apart coaxial conductors carried by the body and extending between the back-end portion and the mating portion of the body, each coaxial conductor having an inner signal conductor surrounded by an outer shield conductor, each coaxial conductor having a mating end at the mating portion of the body, the mating end being configured to provide for electrical connection between the inner signal conductor and a corresponding conductor of the mating modular connector; and

one or more conductive structures extending between the respective outer shield conductors of the coaxial conductors and one or more reference contacts at an outer surface of the body;

wherein the inner signal conductor is made of a springy conductive material, and wherein the mating end of each coaxial conductor has a length of the inner signal conductor exposed, the exposed inner signal conductor being configured to be deflected into resting contact with a corresponding conductor of the mating modular connector;

wherein the length of exposed inner signal conductor of each coaxial cable is folded backward at an angle greater than 90 degrees so as to be deflected rearward into the resting contact.

2. A multiple coaxial modular connector according to claim 1, wherein the outer shield conductor of each coaxial conductor is removed at the mating end to expose the inner signal conductor.

3. A multiple coaxial modular connector according to claim 1, wherein the mating modular connector forms a plug and the body is configured to include a cavity for receiving the plug, and wherein the mating portion of the body is a portion adjacent to the cavity and to a corresponding surface of the plug when mated with the multiple-position modular connector.

4. A multiple coaxial modular connector according to claim 1, wherein the mating modular connector forms a jack defining a cavity, the body is configured as a plug for insertion into the cavity, and the mating portion of the body is a portion adjacent to a corresponding cavity-defining surface of the jack when mated with the multiple-position modular connector.

5. A multiple coaxial modular connector according to claim 1, wherein the mating modular connector forms a plug and the body is configured to include a cavity for receiving the plug, and wherein the length of exposed inner signal conductor of each coaxial cable extends into the cavity so as to make wiping contact with a corresponding contact of the plug when mated with the multiple-position modular connector.

6. A multiple coaxial modular connector according to claim 5, wherein the mating modular connector forms a jack defining a cavity and the body is configured as a plug for insertion into the cavity, and wherein the length of exposed inner signal conductor of each coaxial cable extends from the mating portion so as to make wiping contact with a corresponding contact at a cavity-defining surface of the jack when mated with the multiple-position modular connector.