Patent
Systems and methods for transmitting power to receivers
TLDR
In this paper, a wireless charging system transmitting power to devices being in its far-field is described, where the optimal transmission parameters that enable one or more power waves to form pockets of energy at the exact locations of the power receiving devices are calculated through a beam refinement process, during which the power transmitter iteratively updates the transmission parameters of the transmitted power waves (e.g., power level, direction, phase etc) based on the feedback that it receives from the power receivers regarding their positions with respect to the previously transmitted power wave.Abstract:
Embodiments disclosed herein may generate and transmit power waves that, as result of their physical waveform characteristics (e.g., frequency, amplitude, phase, gain, direction), converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pockets of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pockets of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy.
Specifically, a wireless charging system transmitting power to devices being in its far-field is disclosed. The optimal transmission parameters that enable one or more power waves to form pockets of energy at the exact locations of the power receiving devices are calculated through a beam refinement process, during which the power transmitter iteratively updates the transmission parameters of the transmitted power waves (e.g. power level, direction, phase etc) based on the feedback that it receives from the power receivers regarding their positions with respect to the previously transmitted power waves. For that purpose, a dedicated communication signal is used together with the power waves. The converged transmission parameters are eventually used for the transmission of power to the power receiving devices.read more
Citations
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Patent
Wireless power transmission with selective range
TL;DR: In this article, the authors describe a methodology for wireless power transmission based on pocket-forming, which may include one transmitter and at least one or more receivers, being the transmitter the source of energy and the receiver the device that is desired to charge or power.
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Receivers for Wireless Power Transmission
TL;DR: In this article, the authors provide various electric receiver arrangements which may be used to provide wireless power transmission using suitable power transmission techniques such as pocket-forming, where receivers may include at least one antenna connected to at least two rectifiers and one power converter.
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Wireless charging and powering of electronic devices in a vehicle
TL;DR: In this article, the configurations and methods of wireless power transmission for charging or powering one or more electronic devices inside a vehicle are disclosed and a transmitter capable of single or multiple pocket-forming may be connected to a car lighter, where this transmitter may include a circuitry module and an antenna array integrated within the transmitter, or operatively connected through a cable.
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TL;DR: In this article, the authors present a wireless power system which may be used to provide wireless power transmission (WPT) while using suitable WPT techniques such as pocket-forming.
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Methodology for multiple pocket-forming
TL;DR: In this article, the authors describe a methodology for wireless power transmission based on multiple pocket-forming, where one transmitter and two or more receivers, being the transmitter the source of energy and the receivers the devices that are desired to charge or power.
References
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Patent
Charging of devices by microwave power beaming
TL;DR: In this paper, a system for providing wireless, charging power and/or primary power to electronic/electrical devices is described whereby microwave energy is employed, where the energy is focused by a power transmitter comprising one or more adaptively-phased microwave array emitters onto a device to be charged.
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Phased array wireless resonant power delivery system
TL;DR: In this paper, a transmitter resonant phased array includes a power source operable to source alternating current power at a target frequency, and a plurality of transmitting elements, each of which produces a composite non-radiated magnetic field.
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Wireless power transmission system
TL;DR: The wireless power transmission is a system for providing wireless charging and/or primary power to electronic/electrical devices via microwave energy as mentioned in this paper, where the microwave energy is focused to a location by a power transmitter having one or more adaptively-phased microwave array emitters.
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Systems and methods for optimally delivering pulsed wireless power
TL;DR: In this article, each receiver measures its own battery need for power and transmits that measurement as a request to the transmitter, which then allocates pulses of wireless power among the requesting receivers according to their battery need.
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TL;DR: In this paper, a wireless energy transfer system consisting of a transmitter configured to beam scan RF radiation across a plurality of sectors at a first frequency, a receiver storing energy from the RF radiation, and sending acknowledgements at a second frequency, the first frequency being significantly different from the second frequency was considered.