Patent ID: 8558661
Filing Date: 2013-10-15
Classification: H02J

Abstract:
1. A wireless microwave power transmitter comprising: a controller and a phased array antenna having a plurality of microwave array transceivers each for transmitting a microwave power transmission signal, the transceivers being adaptively-phased by the controller to transmit their respective power transmission signals at a respective selected phase; each transceiver further operable to receive multipath calibration signals from a plurality of devices to be charged by the microwave power transmission signals and detect a phase at which each of the multipath calibration signals is received by the respective transceiver; the controller further configured to adjust the respective selected phase for use in transmitting the respective power transmission signal to a respective determined phase, the respective determined phase based on the respective detected phase wherein the respective determined phase indicates an optimal phase for the power transmission signal to be transmitted to each device of the plurality of devices to be charged; and wherein each power transmission signal is transmitted without utilizing a location signal, if any, from the plurality of devices to be charged that indicates the location of each device to be charged of the plurality of devices to be charged, and wherein the microwave transmitter and the plurality of devices to be charged are not required to be in line of sight of each other, and wherein the controller is further configured to prioritize transmission of the power transmission signals to a first device to be charged of the plurality of devices to be charged prior to transmitting the power transmission signals to a second device of the plurality of devices to be charged based upon a predefined criteria.