Patents by Inventor Alpesh U. Bhobe

Alpesh U. Bhobe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11948728
    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.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: April 2, 2024
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Jianquan Lou, Xiaoxia Zhou, Hailong Zhang, Yingchun Shu, Alpesh U. Bhobe
  • Publication number: 20230156983
    Abstract: Embodiments herein describe air vents that provide air flow for cooling but still provide EMI shielding. In one embodiment, the air vents have a first opening on a first side of a body of a chassis and a second opening on a second, opposite side of the body. These openings form an aperture through the side of the chassis. In addition, the first opening has a smaller diameter than the second opening.
    Type: Application
    Filed: November 11, 2022
    Publication date: May 18, 2023
    Inventors: Jianquan LOU, Alpesh U. BHOBE, Jerrold M. PIANIN, Xiao LI
  • Patent number: 11057987
    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.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: July 6, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Jianquan Lou, Alpesh U. Bhobe, Juhi Garg, Joel Richard Goergen
  • Publication number: 20210193377
    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.
    Type: Application
    Filed: March 4, 2021
    Publication date: June 24, 2021
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Jianquan Lou, Xiaoxia Zhou, Hailong Zhang, Yingchun Shu, Alpesh U. Bhobe
  • Patent number: 10999654
    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.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: May 4, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Xiaoxia Zhou, Hailong Zhang, Jianquan Lou, Guangcao Fu, Alpesh U. Bhobe
  • Patent number: 10971299
    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.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: April 6, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Jianquan Lou, Xiaoxia Zhou, Hailong Zhang, Yingchun Shu, Alpesh U. Bhobe
  • Publication number: 20210014583
    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.
    Type: Application
    Filed: July 10, 2019
    Publication date: January 14, 2021
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Xiaoxia Zhou, Hailong Zhang, Jianquan Lou, Guangcao Fu, Alpesh U. Bhobe
  • Publication number: 20200267833
    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.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 20, 2020
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Jianquan Lou, Alpesh U. Bhobe, Juhi Garg, Joel Richard Goergen
  • Publication number: 20190156993
    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.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 23, 2019
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Jianquan Lou, Xiaoxia Zhou, Hailong Zhang, Yingchun Shu, Alpesh U. Bhobe
  • Patent number: 9980417
    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.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: May 22, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Feng Ji, Jianquan Lou, Chen Peng, Alpesh U. Bhobe, Yingchun Shu, Jinghan Yu, Li Xiaogang
  • Patent number: 9905354
    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.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: February 27, 2018
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Jianquan Lou, Quanhui Sun, Xiaoxia Zhou, Alpesh U. Bhobe, Jinghan Yu, Yingchun Shu
  • Publication number: 20170178783
    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.
    Type: Application
    Filed: December 18, 2015
    Publication date: June 22, 2017
    Inventors: Jianquan Lou, Quanhui Sun, Xiaoxia Zhou, Alpesh U. Bhobe, Jinghan Yu, Yingchun Shu
  • Patent number: 9525242
    Abstract: Presented herein is a modular connector with electromagnetic interference suppression. The modular connector includes a substrate, at least one set of spring pins, and a ferrite component. Each spring in the at least one set of springs includes a first portion adjacent the substrate and a second portion extending away from the substrate. The ferrite component surrounds the at least one set of spring pins, couples the at least one set of spring pins to the substrate, and is configured to suppress electromagnetic interference.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: December 20, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Jianquan Lou, Hongmei Fan, Quanhui Sun, Shun Li, Alpesh U. Bhobe, Jinghan Yu, Yingchun Shu
  • Patent number: 8835775
    Abstract: Techniques are provided for electrically connecting components on a printed circuit board (PCB), semiconductor chip package, or other electronic device. More specifically, a first component, configured to generate a differential signal, is disposed on the PCB, while a second component, configured to receive the differential signal from the first component, is also disposed on the PCB. A differential conductor pair comprising first and second parallel conductors extends along a path between the first and second components. The path of the differential conductor pair comprises at least one turn that causes a change in direction of the first and second conductors. The first conductor comprises at least one localized skew compensation bend disposed at the turn such that, at the end of the turn, the first and second conductors have substantially the same length with respect to the first component.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: September 16, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Hongmei Fan, Xiaoxia Zhou, Alpesh U. Bhobe, Jinghan Yu, Hailong Zhang, Phillipe Sochoux
  • Publication number: 20130118790
    Abstract: Techniques are provided for electrically connecting components on a printed circuit board (PCB), semiconductor chip package, or other electronic device. More specifically, a first component, configured to generate a differential signal, is disposed on the PCB, while a second component, configured to receive the differential signal from the first component, is also disposed on the PCB. A differential conductor pair comprising first and second parallel conductors extends along a path between the first and second components. The path of the differential conductor pair comprises at least one turn that causes a change in direction of the first and second conductors. The first conductor comprises at least one localized skew compensation bend disposed at the turn such that, at the end of the turn, the first and second conductors have substantially the same length with respect to the first component.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 16, 2013
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Hongmei Fan, Xiaoxia Zhou, Alpesh U. Bhobe, Jinghan Yu, Hailong Zhang, Phillipe Sochoux