Charging of devices by microwave power beaming

A system for charging of devices, comprising:

• a power transmitter having one or more adaptively-phased microwave array emitters;
• a device to be charged having one or more rectennas associated therewith;
• location determining means for determining a location of the device to be charged relative to the adaptively-phased array emitters;
• and
• one or more backscatter detectors associated with the adaptively-phased microwave array emitters for detecting microwave backscatter energy reflected off of any obstruction between the adaptively-phased microwave array emitters and the device to be charged.

A system for device charging, comprising:

• a power transmitter portion further comprising:
• a power source;
• one or more adaptively-phased microwave array emitters;
• means for receiving a location signal indicative of the location of a device to be charged;
• location detection means for determining the location of the device to be charged from the locator signal;
• means for focusing energy produced by the one or more adaptive-phase microwave array emitters onto the devices to be charged;
• and
• control logic means for reducing the amount of energy produced by any obstructed adaptively phased microwave array emitter until the obstruction is removed;
• and
• a device to be charged comprising:
• a battery;
• one or more rectennas for receiving and rectifying energy produced by the adaptively-phased microwave array emitters;
• and
• charging and power control means for charging the battery from rectified energy received by the rectennas.