公开(公告)号：US20210014583A1

公开(公告)日：2021-01-14

申请号：US16507853

申请日：2019-07-10

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Xiaoxia Zhou ,  Hailong Zhang ,  Jianquan Lou ,  Guangcao Fu ,  Alpesh U. Bhobe

IPC: H04Q11/00 ,  H04B10/58 ,  H04B10/69

Abstract: In one embodiment, an apparatus includes a plurality of optical module ports in communication with a physical layer device in a network device. Communication of signals from the physical layer device to the optical module ports is configured such that the signals received at the optical module ports adjacent to one another are at different phases to reduce electromagnetic interference associated with the optical module ports.

公开(公告)号：US11948728B2

公开(公告)日：2024-04-02

申请号：US17192523

申请日：2021-03-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jianquan Lou ,  Xiaoxia Zhou ,  Hailong Zhang ,  Yingchun Shu ,  Alpesh U. Bhobe

IPC: H01F27/28 ,  H01F27/02 ,  H01F27/24 ,  H01F27/29 ,  H01F27/34 ,  H01R13/719 ,  H01R24/64 ,  H01F17/06 ,  H01R13/6461 ,  H01R13/66 ,  H01R25/00 ,  H01R107/00

CPC classification number: H01F27/34 ,  H01F27/027 ,  H01F27/24 ,  H01F27/28 ,  H01F27/29 ,  H01R13/719 ,  H01R24/64 ,  H01F17/062 ,  H01F27/2895 ,  H01R13/6461 ,  H01R13/6633 ,  H01R25/006 ,  H01R2107/00 ,  H01R2201/04

Abstract: In one embodiment, an apparatus includes an array of transformers and common mode chokes each comprising a magnetic core and windings wound around the magnetic core at opposing locations on the magnetic core, and a retaining groove on each of the magnetic cores to maintain the windings in their opposing locations on the magnetic core. The transformers and common mode chokes are positioned in the array with the windings on each of the magnetic cores located offset to the windings of adjacent magnetic cores in the array to reduce crosstalk and improve common mode noise rejection.

公开(公告)号：US10999654B2

公开(公告)日：2021-05-04

申请号：US16507853

申请日：2019-07-10

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Xiaoxia Zhou ,  Hailong Zhang ,  Jianquan Lou ,  Guangcao Fu ,  Alpesh U. Bhobe

IPC: H04Q11/00 ,  H04B10/69 ,  H04B10/58

Abstract: In one embodiment, an apparatus includes a plurality of optical module ports in communication with a physical layer device in a network device. Communication of signals from the physical layer device to the optical module ports is configured such that the signals received at the optical module ports adjacent to one another are at different phases to reduce electromagnetic interference associated with the optical module ports.

公开(公告)号：US11057987B2

公开(公告)日：2021-07-06

申请号：US16276073

申请日：2019-02-14

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jianquan Lou ,  Alpesh U. Bhobe ,  Juhi Garg ,  Joel Richard Goergen

IPC: H05K1/02 ,  H01P3/08 ,  H01P1/02

Abstract: In one embodiment, a method includes positioning a first component for generating a differential signal on a printed circuit board, positioning a second component for receiving the differential signal on a printed circuit board, and routing a differential conductor pair on a path between the first component and the second component, wherein the path comprises at least one turn in which the differential conductor pair changes direction. A first conductor and a second conductor of the differential conductor pair each comprise a plurality of sets of bends proximate to the turn to provide skew compensation while reducing differential mode to common mode conversion and wherein each of the sets of bends in the second conductor is aligned with one of the sets of bends in the first conductor.

公开(公告)号：US10971299B2

公开(公告)日：2021-04-06

申请号：US15818950

申请日：2017-11-21

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jianquan Lou ,  Xiaoxia Zhou ,  Hailong Zhang ,  Yingchun Shu ,  Alpesh U. Bhobe

IPC: H01F27/28 ,  H01F27/34 ,  H01F27/24 ,  H01R24/64 ,  H01F27/29 ,  H01R13/719 ,  H01F27/02 ,  H01R107/00 ,  H01R25/00 ,  H01R13/6461 ,  H01F17/06 ,  H01R13/66

Abstract: In one embodiment, an apparatus includes a plurality of transformers and a plurality of common mode chokes, each of the transformers and the common mode chokes comprising a magnetic core and windings wound around the magnetic core at generally opposite sides thereof. The transformers and common mode chokes are arranged in an array with the windings on each of the magnetic cores positioned generally orthogonal to the windings of adjacent magnetic cores in the array to reduce crosstalk and improve common mode noise rejection.

公开(公告)号：US20200267833A1

公开(公告)日：2020-08-20

申请号：US16276073

申请日：2019-02-14

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jianquan Lou ,  Alpesh U. Bhobe ,  Juhi Garg ,  Joel Richard Goergen

IPC: H05K1/02 ,  H01P3/08

Abstract: In one embodiment, a method includes positioning a first component for generating a differential signal on a printed circuit board, positioning a second component for receiving the differential signal on a printed circuit board, and routing a differential conductor pair on a path between the first component and the second component, wherein the path comprises at least one turn in which the differential conductor pair changes direction. A first conductor and a second conductor of the differential conductor pair each comprise a plurality of sets of bends proximate to the turn to provide skew compensation while reducing differential mode to common mode conversion and wherein each of the sets of bends in the second conductor is aligned with one of the sets of bends in the first conductor.

公开(公告)号：US20190156993A1

公开(公告)日：2019-05-23

申请号：US15818950

申请日：2017-11-21

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jianquan Lou ,  Xiaoxia Zhou ,  Hailong Zhang ,  Yingchun Shu ,  Alpesh U. Bhobe

IPC: H01F27/34 ,  H01F27/28 ,  H01F27/24 ,  H01F27/29 ,  H01R25/00 ,  H01R24/64

Abstract: In one embodiment, an apparatus includes a plurality of transformers and a plurality of common mode chokes, each of the transformers and the common mode chokes comprising a magnetic core and windings wound around the magnetic core at generally opposite sides thereof. The transformers and common mode chokes are arranged in an array with the windings on each of the magnetic cores positioned generally orthogonal to the windings of adjacent magnetic cores in the array to reduce crosstalk and improve common mode noise rejection.

公开(公告)号：US09980417B1

公开(公告)日：2018-05-22

申请号：US15402405

申请日：2017-01-10

Applicant: Cisco Technology, Inc.

Inventor： Feng Ji ,  Jianquan Lou ,  Chen Peng ,  Alpesh U. Bhobe ,  Yingchun Shu ,  Jinghan Yu ,  Li Xiaogang

IPC: H05K9/00

CPC classification number: H05K9/0015

Abstract: An electromagnetic interference (EMI) gasket is provided that includes a resiliently-flexible and conductive outer shell, a cushioning element disposed in the outer shell, and at least one magnetic component disposed in the outer shell configured to magnetically couple to a conductive surface of an electronic device chassis.

公开(公告)号：US20210193377A1

公开(公告)日：2021-06-24

申请号：US17192523

申请日：2021-03-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jianquan Lou ,  Xiaoxia Zhou ,  Hailong Zhang ,  Yingchun Shu ,  Alpesh U. Bhobe

IPC: H01F27/34 ,  H01F27/28 ,  H01F27/24 ,  H01R24/64 ,  H01F27/29 ,  H01R13/719 ,  H01F27/02

Abstract: In one embodiment, an apparatus includes an array of transformers and common mode chokes each comprising a magnetic core and windings wound around the magnetic core at opposing locations on the magnetic core, and a retaining groove on each of the magnetic cores to maintain the windings in their opposing locations on the magnetic core. The transformers and common mode chokes are positioned in the array with the windings on each of the magnetic cores located offset to the windings of adjacent magnetic cores in the array to reduce crosstalk and improve common mode noise rejection.

公开(公告)号：US09905354B2

公开(公告)日：2018-02-27

申请号：US14975217

申请日：2015-12-18

Applicant: Cisco Technology, Inc.

Inventor： Jianquan Lou ,  Quanhui Sun ,  Xiaoxia Zhou ,  Alpesh U. Bhobe ,  Jinghan Yu ,  Yingchun Shu

IPC: H01F27/28 ,  H01R13/66 ,  H01F27/24 ,  H05K5/00

CPC classification number: H01F27/24 ,  H01F27/2828 ,  H01F27/38 ,  H01F27/40 ,  H01F2017/0093 ,  H05K5/0026

Abstract: An electrical device includes a core structure having a first core section, a second core section, and a third core section. The electrical device further includes a first coil electrically coupled to the first core section and the second core section to form a choke and a primary winding of a transformer. The choke is configured to reduce common mode noise for an electrical signal received by the electrical device, and the primary winding of the transformer is configured to induce a magnetic field on the third core section. The electrical device also includes a second coil electrically coupled to the third core section, which forms a secondary winding of the transformer and receives electromagnetic energy from the magnetic field induced by the primary winding of the transformer.