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.
Antenna array calibration for wireless charging
2017-12-05
Patent
Electronic Resource
English
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
European Patent Office | 2019
|Spaceborne Active Phased Array Antenna Calibration using an accurate Antenna Model
German Aerospace Center (DLR) | 2008
|Array Shape Self-Calibration for Large Flexible Antenna
IEEE | 2007
|Wireless Charging Apparatus for Vehicles with Integral Antenna
European Patent Office | 2022
Wireless Charging Apparatus for Vehicles with Integral Antenna
European Patent Office | 2021
|