Antenna array calibration for wireless charging is disclosed. In one aspect, an initial calibration sequence is performed each time a wireless charging station is powered on. The initial calibration sequence utilizes a reference antenna element, which is an antenna element randomly selected from a plurality of antenna elements in the wireless charging station, to determine relative receiver phase errors between the reference antenna element and each of the other antenna elements in an antenna array. In another aspect, a training sequence is performed after completing the initial calibration sequence to determine total relative phase errors between the reference antenna element and each of the other antenna elements in the antenna array. Adjustments can then be made to match respective total relative phase errors among the plurality of antenna elements to achieve phase coherency among the plurality of antenna elements for improved wireless charging power efficiency.


    Access

    Download


    Export, share and cite



    Title :

    Antenna array calibration for wireless charging


    Contributors:
    KHLAT NADIM (author)

    Publication date :

    2017-12-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H01Q Antennen , ANTENNAS, i.e. RADIO AERIALS / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



    INDUCTIVE CHARGING ANTENNA STRUCTURE, WIRELESS CHARGING MODULE AND MOTOR VEHICLE

    SCHULER STÉPHANE / YAO BIN | European Patent Office | 2019

    Free access

    Spaceborne Active Phased Array Antenna Calibration using an accurate Antenna Model

    Bachmann, Markus / Schwerdt, Marco / Bräutigam, Benjamin | German Aerospace Center (DLR) | 2008

    Free access

    Array Shape Self-Calibration for Large Flexible Antenna

    Santori, Agnes / Barrere, Jean / Chabriel, Gilles et al. | IEEE | 2007



    Wireless Charging Apparatus for Vehicles with Integral Antenna

    LEE KI JONG / KIM SANG HYUN | European Patent Office | 2021

    Free access