Patents by Inventor Mats Gan KLINGBERG

Mats Gan KLINGBERG 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).

  • Removal of passive intermodulation in antenna systems
    Patent number: 11996879
    Abstract: There is provided mechanisms for PIM removal in an antenna system. A method is performed by a controller of the antenna codebook based beamforming, which transmission radio chains of the antenna system that cause a signal received by receiver radio chains of the antenna system to be impacted by PIM. These transmission radio chains are identified based on which codeword in the codebook is used for the beamforming. The method comprises determining a correction signal by subjecting the signals only as transmitted by the identified transmission radio chains to a model of the PIM. The method comprises removing PIM from the signal received by the receiver radio chains by subtracting the correction signal from the signal received by the receiver radio chains.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: May 28, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jin Ellgardt, Spendim Dalipi, Mats Gan Klingberg, Haiying Cao
  • REMOVAL OF PASSIVE INTERMODULATION IN ANTENNA SYSTEMS
    Publication number: 20230179252
    Abstract: There is provided mechanisms for PIM removal in an antenna system. A method is performed by a controller of the antenna system. The method comprises identifying, during transmission using codebook based beamforming, which transmission radio chains of the antenna system that cause a signal received by receiver radio chains of the antenna system to be impacted by PIM. These transmission radio chains are identified based on which codeword in the codebook is used for the beamforming. The method comprises determining a correction signal by subjecting the signals only as transmitted by the identified transmission radio chains to a model of the PIM. The method comprises removing PIM from the signal received by the receiver radio chains by subtracting the correction signal from the signal received by the receiver radio chains.
    Type: Application
    Filed: March 18, 2020
    Publication date: June 8, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jin ELLGARDT, Spendim DALIPI, Mats Gan KLINGBERG, Haiying CAO