Patents by Inventor Pär Holmgren

Pär Holmgren 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).

  • ACTIVE ARRAY ANTENNA LINEARIZATION
    Publication number: 20230137470
    Abstract: Systems and methods for linearizing a radio system are disclosed. In some embodiments, a radio system comprises an antenna array, transmit branches comprising respective power amplifiers, a predistortion subsystem comprising predistorters for the transmit branches respectively, a receive antenna element, a transmit observation receiver having an input coupled to the receive antenna element, and an adaptor. The predistorters predistort respective transmit signals to provide predistorted transmit signals to the respective transmit branches for transmission via respective active antenna elements in the antenna array. The transmit observation receiver is operable to receive, via the receive antenna element, a combined receive signal due to coupling between the receive antenna element and the active antenna elements.
    Type: Application
    Filed: December 30, 2022
    Publication date: May 4, 2023
    Inventors: Leonard Rexberg, Göran Nilsson, Tomas Andersson, Pär Holmgren, Anders Martinsson
  • Active array antenna linearization
    Patent number: 11563408
    Abstract: Systems and methods for linearizing a radio system are disclosed. In some embodiments, a radio system comprises an antenna array, transmit branches comprising respective power amplifiers, a predistortion subsystem comprising predistorters for the transmit branches respectively, a receive antenna element, a transmit observation receiver having an input coupled to the receive antenna element, and an adaptor. The predistorters predistort respective transmit signals to provide predistorted transmit signals to the respective transmit branches for transmission via respective active antenna elements in the antenna array. The transmit observation receiver is operable to receive, via the receive antenna element, a combined receive signal due to coupling between the receive antenna element and the active antenna elements.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: January 24, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Leonard Rexberg, Göran Nilsson, Tomas Andersson, Pär Holmgren, Anders Martinsson
  • ACTIVE ARRAY ANTENNA LINEARIZATION
    Publication number: 20220006430
    Abstract: Systems and methods for linearizing a radio system are disclosed. In some embodiments, a radio system comprises an antenna array, transmit branches comprising respective power amplifiers, a predistortion subsystem comprising predistorters for the transmit branches respectively, a receive antenna element, a transmit observation receiver having an input coupled to the receive antenna element, and an adaptor. The predistorters predistort respective transmit signals to provide predistorted transmit signals to the respective transmit branches for transmission via respective active antenna elements in the antenna array. The transmit observation receiver is operable to receive, via the receive antenna element, a combined receive signal due to coupling between the receive antenna element and the active antenna elements.
    Type: Application
    Filed: November 13, 2018
    Publication date: January 6, 2022
    Inventors: Leonard Rexberg, Göran Nilsson, Tomas Andersson, Pär Holmgren, Anders Martinsson