Patents by Inventor Sebastian LITWINOW

Sebastian LITWINOW 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: 11984917
    Abstract: A mounting system for a near field radio frequency (RF) communicator, the system comprising: a splitter, for splitting an alternating electrical signal received from an antenna of the smart card and having: a first output for providing a first part of the alternating electrical signal to an RF input of said chip, and a second output for providing a second part of the alternating electrical signal for powering an auxiliary circuit; a matching network, at the first output of the splitter, and arranged to provide: an input impedance selected based on the impedance of the first output of the splitter, and an output impedance selected based on the impedance of the RF input of said chip; wherein the network comprises a first inductor for electrical connection to said chip and a second inductor, and the second inductor is arranged for inductive coupling to the first inductor thereby to provide RF coupling, with DC isolation and/or common mode isolation, to the RF input of said chip.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: May 14, 2024
    Assignee: DRAYSON TECHNOLOGIES (EUROPE) LIMITED
    Inventors: Vitor Freitas, Victor Diaz, Sebastian Litwinow, Alison Lloyd
  • Patent number: 11889619
    Abstract: A power splitter for a smart card having near field RF communications capability, the power splitter comprising a substrate for integration into said smart card; a first port for connection to a near field RF communications antenna for receiving an alternating electrical signal; a second port for connection to an auxiliary rectifier; and a third port for connection to a near field RF communicator; wherein the splitter comprises a impedance network, connected between the three ports, and being arranged to divide the alternating electrical signal between the second port and the third port to split the alternating electrical signal, wherein the impedance network comprises a printed coil inductor, and a zone of the substrate surrounding the printed coil inductor is free from any ground plane.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: January 30, 2024
    Assignee: FREEVOLT TECHNOLOGIES LIMITED
    Inventors: Victor Diaz, Vitor Freitas, Sebastian Litwinow, Alison Lloyd
  • Publication number: 20220407566
    Abstract: The disclosure provides a controller for a device having near field RF communications capabilities. The controller is configured to: tune the impedance of at least one component of an impedance matching circuit to vary an impedance transformation provided by the impedance matching circuit; determine at least one indication of power output from the circuit, each at least one indication corresponding to an impedance transformation; and identify one of a plurality of modes of the circuit as an operating mode, based on the at least one indication, wherein the impedance matching circuit provides a different impedance transformation in each mode.
    Type: Application
    Filed: June 29, 2020
    Publication date: December 22, 2022
    Inventors: Victor DIAZ, Vitor FREITAS, Sebastian LITWINOW, Alison LLOYD
  • Publication number: 20220158667
    Abstract: A mounting system for a near field radio frequency (RF) communicator, the system comprising: a splitter, for splitting an alternating electrical signal received from an antenna of the smart card and having: a first output for providing a first part of the alternating electrical signal to an RF input of said chip, and a second output for providing a second part of the alternating electrical signal for powering an auxiliary circuit; a matching network, at the first output of the splitter, and arranged to provide: an input impedance selected based on the impedance of the first output of the splitter, and an output impedance selected based on the impedance of the RF input of said chip; wherein the network comprises a first inductor for electrical connection to said chip and a second inductor, and the second inductor is arranged for inductive coupling to the first inductor thereby to provide RF coupling, with DC isolation and/or common mode isolation, to the RF input of said chip.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 19, 2022
    Inventors: Vitor FREITAS, Victor DIAZ, Sebastian LITWINOW, Alison LLOYD
  • Publication number: 20210259096
    Abstract: A power splitter for a smart card having near field RF communications capability, the power splitter comprising a substrate for integration into said smart card; a first port for connection to a near field RF communications antenna for receiving an alternating electrical signal; a second port for connection to an auxiliary rectifier; and a third port for connection to a near field RF communicator; wherein the splitter comprises a impedance network, connected between the three ports, and being arranged to divide the alternating electrical signal between the second port and the third port to split the alternating electrical signal, wherein the impedance network comprises a printed coil inductor, and a zone of the substrate surrounding the printed coil inductor is free from any ground plane.
    Type: Application
    Filed: June 14, 2019
    Publication date: August 19, 2021
    Inventors: Victor DIAZ, Vitor FREITAS, Sebastian LITWINOW, Alison LLOYD