Wireless power transmission system

摘要

The wireless power transmission is a system for providing wireless charging and/or primary power to electronic/electrical devices via microwave energy. The microwave energy is focused to a location by a power transmitter having one or more adaptively-phased microwave array emitters. Rectennas within the device to be charged receive and rectify the microwave energy and use it for battery charging and/or for primary power.

主权项

1. A wireless sensor, comprising:
a wireless microwave power receiver, comprising: one or more rectennas configured to receive power transmission signals from a wireless microwave power transmitter to charge the wireless microwave power receiver;wherein the wireless microwave power transmitter comprising:
a controller and a phased array antenna having a plurality of microwave array transceivers for transmitting the microwave power transmission signals, the transceiver being adaptively-phased by the controller to transmit the power transmission signals at a respective selected phase;each transceiver further operable to receive multipath calibration signals from the microwave power receiver and detect a phase at which each of the multipath calibration signals is received by the transceiver;a transmitter configured to transmit said multipath calibration signals to said microwave power transmitter; and,wherein each rectenna is further configured to receive a power transmission signal having a determined phase, the determined phase of the power transmission signal generated under the control of the controller at the microwave power transmitter being substantially a complex conjugate of a detected phase of the calibration signal; andwherein the microwave power transmitter and wireless microwave power receiver are not required to be in line of sight of each other; andwherein the controller is further configured to determine a prioritization order for transmission of the power transmission signals to the wireless microwave power receiver based upon a predefined criteria.