Patents by Inventor Amita Patil

Amita Patil 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).

  • Rectifier backflow reduction via biasing
    Patent number: 11734540
    Abstract: Backflow in rectifiers may be reduced via biasing. Upon determining that backflow within a rectifier is likely, one or more rectifying elements in the rectifier may be debiased, via analog or digital means. The debiased rectifying elements become less conductive or nonconductive, thereby reducing or preventing backflow. The determination of backflow likelihood may be performed based on a signal to be backscattered or the amplitude-modulated envelope of an incident RF wave, and may be digital or analog in nature.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: August 22, 2023
    Assignee: Impinj, Inc.
    Inventors: Amita Patil, Jay A. Kuhn, Charles J. T. Peach, John D. Hyde, Jaskarn Johal
  • RFID tag rectifiers with bias current reuse
    Patent number: 11481591
    Abstract: Embodiments are directed to rectifiers using a single bias current or bias current path to bias multiple rectifying elements. A rectifier that has multiple rectifier stages coupled together serially includes a bias current path coupled to each of the rectifier stages. The bias current path is configured to simultaneously bias rectifying elements in each of the rectifier stages by using a bias current to bias a first rectifying element and reusing the bias current to bias other rectifying elements.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: October 25, 2022
    Assignee: Impinj, Inc.
    Inventors: Charles J. T. Peach, John D. Hyde, Jay A. Kuhn, Theron Stanford, Amita Patil
  • Rectifier backflow reduction via biasing
    Patent number: 11188803
    Abstract: Backflow in rectifiers may be reduced via biasing. Upon determining that backflow within a rectifier is likely, one or more rectifying elements in the rectifier may be debiased, via analog or digital means. The debiased rectifying elements become less conductive or nonconductive, thereby reducing or preventing backflow. The determination of backflow likelihood may be performed based on a signal to be backscattered or the amplitude-modulated envelope of an incident RF wave, and may be digital or analog in nature.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: November 30, 2021
    Assignee: Impinj, Inc.
    Inventors: Amita Patil, Jay A. Kuhn, Charles J. T. Peach, John D. Hyde, Jaskarn Johal
  • RFID tag rectifiers with bias current reuse
    Patent number: 10713549
    Abstract: Embodiments are directed to rectifiers using a single bias current or bias current path to bias multiple rectifying elements. A rectifier that has multiple rectifier stages coupled together serially includes a bias current path coupled to each of the rectifier stages. Thee bias current path is configured to simultaneously bias rectifying elements in each of the rectifier stages by using a bias current to bias a first rectifying element and reusing the bias current to bias other rectifying elements.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: July 14, 2020
    Assignee: Impinj, Inc.
    Inventors: Charles J. T. Peach, John D. Hyde, Jay A. Kuhn, Theron Stanford, Amita Patil