Mechanically reconfigurable reflector antenna for efficient wireless power beaming systems
AssigneeMaxwave Co., Ltd.
InventorMirhamed Mirmozafari
Life of this patent
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Abstract
A method of wireless power beaming to a receiver antenna requires mechanical scanning of the transmitting antenna to locate the receiver antenna on the target. The target can be stationery or moving such as a drone. The transmitting antenna includes a feed antenna and a reconfigurable reflector antenna. The reconfigurable reflector antenna can be a reflectarray controlled by micromotors, which are used to adjust the location of the focal point to be commensurate with the target. Also, the distance between a feed antenna and the reconfigurable reflector antenna is adjusted to change the shape and power density at the focal point in order to optimize power recovery at the receiver antenna.
Claims8
A method of wireless power beaming to a receiver antenna, the method comprising the steps of:
- providing a feed antenna and a reconfigurable reflector antenna, wherein the feed antenna transmits electromagnetic energy in a low-gain pattern towards the reconfigurable reflector antenna that transmits a high-gain reflector beam;
- simultaneously rotating the reflector antenna and the feed antenna around their axes for azimuth and elevation scanning to mechanically detect the directional position of the receiver antenna and positioning the axis of the reflector antenna towards the detected receiver antenna;
- adjusting the location of the focal point of the high-gain reflector beam reflected from the reconfigurable reflector antenna in the direction of the receiver antenna in order to bring the focal point onto the receiver antenna;
- and
- adjusting the distance between the feed antenna and the reconfigurable reflector antenna to change the shape and power density at the focal point in order to optimize power recovery at the receiver antenna.
Dependencies are inferred from the claim text.