Abstract: 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.

Abstract: Wireless transceiver devices are disclosed herein that enhance and otherwise extend the wireless power transmission range of a retrodirective wireless power transmission system. The wireless transceiver devices can be configured to operate, in whole or in part, as additional wireless power transmission systems enhancing range of the retrodirective wireless power transmission system and/or delivering supplemental wireless power to devices within range.

Abstract: Systems and methods for leveraging multipath wireless transmissions for charging devices within multipath signaling environment. Techniques according to the present technology include determining a received signal strength of a radio frequency signal received via a plurality of paths at two or more antennas of a plurality of antennas of an antenna array. The techniques also include configuring parameters for transmission of a wireless power signal over one or more paths of the plurality of paths for which the received signal strength exceeds a threshold value. The techniques further include directing at least a portion of the plurality of antennas to transmit the wireless power signal over the one or more paths according to the parameters. Resulting signal transmissions may thus be directionally biased toward least lossy pathways between a wireless power transmitter and a device in need of receiving wireless power.

Abstract: Systems and methods for leveraging multipath wireless transmissions for high data rate communication and charging devices within multipath vehicle environments are described. The techniques include deploying a wireless charger, including an array of antennas, within a vehicle interior. The wireless charger may detect an incoming signal from a client device. Each antenna in the array may determine an offset for the received signal, which is then used to tune parameters for each antenna individually. Upon transmission, the resulting signal is directionally biased toward the least lossy pathways between the device and the charger. These pathways avoid passengers and other sources of signal attenuation. Thus, for a given total power envelope, a greater total signal amplitude may be delivered to the device, with reduced exposure to any occupants of the vehicle. Additionally, the interior of the vehicle may be provisioned to help improve multipath focusing of transmissions.

Abstract: 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.

Abstract: A method and apparatus for focused communication is disclosed. The method includes a base transmitter array in communication with at least one client device at the same frequency. The base transmitter array provides a focused data communication to the client device.

Abstract: Systems and methods are described for operating a wireless power transmission system. The wireless power transmission system receives a beacon signal delivered from and initiated by a wireless power receiver client configured to receive wireless power from the wireless power transmission system. The wireless power transmission system also delivers wireless power to the wireless power receiver client and simultaneously detects for additional encoded beacon signals delivered from and initiated by additional wireless power receiver clients.

Abstract: A Timing Acquisition Module (TAM) associated with a wireless power transmission systems (WPTS) is disclosed herein. The TAM is configured to receive encoded beacons broadcast by wireless power receiver clients requesting power on demand. The TAM decodes the encoded beacons to identify respective client broadcast and notifies the WPTS that a client is requesting power. In turn, the WPTS transmits wireless power signals to the client. The WPTS and client may use separate beacons or signals to command the client to broadcast its WPTS beacon. Phases of a beacon are detected by antennas in the WPTS antenna array, and based on the beacon, the wireless power signals are transmitted from the WPTS to the client. Multiple apparatus including a combination of a WPTS and TAM may be implemented in a wireless power environment in a cooperative manner, enabling a client to move within the environment while supporting power on demand.

Abstract: A circuit includes power reception circuitry to convert an RF signal to a direct current signal for transmission to an energy storage device and/or an electronic device associated with the circuit. The circuit includes voltage regulator circuitry to regulate an output voltage of the circuit based on an internal state thereof. A method incudes receiving, by at least one antenna, the RF signal. The method includes converting, by the circuit coupled to the antenna, the RF signal to a direct current signal. The method includes transmitting the DC signal to the energy storage device and/or the electronic device. The method includes determining the internal state of the circuit. The method includes regulating the output voltage of the circuit based on the internal state. Embodiments enable the addition of wireless charging functionality to existing electronic devices without extensive internal and/or external redesign.

Abstract: Techniques are described herein for enabling, among other features, more effective wireless charging of devices in wireless power delivery environments through enhanced signal focusing over multiple paths in a multipath wireless power delivery environment. More specifically, the systems and methods discussed herein describe techniques for increasing effective charging of devices, including enhanced ability to focus charging utilizing multiple pathways, phase detection of incoming signals allowing for movement detection in a wireless environment, phase synchronization, and directional arrays.

Abstract: Systems and methods are described for operating a wireless power transmission system. The wireless power transmission system receives an encoded beacon signal delivered from and initiated by a wireless power receiver client configured to receive wireless power from the wireless power transmission system. The wireless power transmission system also delivers wireless power to the wireless power receiver client and simultaneously detects for additional encoded beacon signals delivered from and initiated by additional wireless power receiver clients.

Abstract: Wireless power receivers are described, which are used in conjunction with a wireless power transmission system. For instance, a wireless power receiver is provided comprising an antenna configured to receive wireless power signals from a wireless power signal transmitter. The antenna can be coupled to wireless power circuitry that delivers power based on the wireless power signals received by the antenna. Further, a module is provided that contains the wireless power receiver and couples to a device powered by the wireless power circuitry. Further, the module is configured to couple to the device in a fixed position that affixes an orientation of the antenna relative to the device.

Abstract: The technology described herein relates to polarization adaptive wireless power transmission systems. In an implementation, a wireless power transmission system is described. The wireless power transmission system includes an antenna array and control circuitry operatively coupled to the antenna array. The control circuitry is configured to determine polarization information of a beacon signal received from a client device at multiple antennas of the antenna array. The beacon signal is transmitted by a client device in a wireless power delivery environment. The control circuitry is further configured to configure polarization information associated with each of the multiple antennas to match the polarization information determined at respective antennas of the multiple antennas. The present technology enables different wireless power receiver clients to have different polarizations. The wireless power transmission system can efficiently send power to the client devices by matching their polarization.

Abstract: Techniques are described herein for imaging static or semi-static objects in a wireless power delivery environment and tracking non-static objects contained therein. More specifically, embodiments of the present disclosure describe techniques for determining the relative locations and movement of non-static objects in a wireless power delivery environment. Additionally, the techniques describe methods and system for generation of motion-based maps such as heat (or dwell maps) and flow maps.

Abstract: Systems, methods, and apparatuses for receiving wireless power using a wireless power receiver client architecture are disclosed. A simplified wireless power receiver apparatus includes an energy storage device and a radio frequency (RF) transceiver including an antenna. Energy harvester circuitry is coupled to the energy storage device and the RF transceiver, and control circuitry is coupled to the energy storage device, the RF transceiver, and the energy harvester. The control circuitry causes the RF transceiver to: establish a connection with a wireless power transmitter (WPT), transmit a beacon signal to the WPT, and receive a wireless power signal from the WPT. The control circuitry causes the energy harvester to deliver at least a portion of energy of the wireless power signal to the energy storage device for storage therein. In some embodiments, a single antenna is utilized both for transmitting the beacon signal and for receiving the wireless power signal.

Abstract: Wireless power transmission is used in conjunction with lighting, such as a light emitting diode (LED) bulb or lighting fixture that uses existing electrical wiring infrastructure. For instance, a lighting device is provided such that a wireless power transmitter is coupled to receive electrical operating power via the lighting device when the lighting device is coupled to electrical wiring infrastructure.

Abstract: Embodiments of the present disclosure describe techniques for encoding beacon signals in wireless power delivery environments. More specifically, techniques are disclosed for encoding beacon signals to isolate client devices for wireless power delivery in wireless power delivery environments. The beacon signals can be encoded or modulated with a transmission code that is provided to selected clients in the wireless power delivery environment. In this manner, beacon signals from the select clients can be identified and the corresponding client devices isolated for wireless power delivery.

Abstract: Embodiments of the present disclosure describe systems, methods, and apparatuses that actively regulate output voltage of wirelessly chargeable energy storage devices, e.g., wirelessly chargeable batteries. More specifically, techniques are described to emulate low-battery behavior of a standard battery, e.g., a typical AA battery, based on an internal state of the apparatus. The internal state can be determined based on commands provided by or to the apparatus or based on analog information such as, for example, an internal charge state, e.g., of a lithium-ion battery or capacitor.

Abstract: Techniques are described herein for enabling, among other features, more effective wireless charging of devices in wireless power delivery environments through enhanced signal focusing over multiple paths in a multipath wireless power delivery environment. More specifically, the systems and methods discussed herein describe techniques for increasing effective charging of devices, including enhanced ability to focus charging utilizing multiple pathways, phase detection of incoming signals allowing for movement detection in a wireless environment, phase synchronization, and directional arrays.

Abstract: Embodiments of a conformal wave selector and methods of application thereof are disclosed. A conformal wave selector comprises a first plurality of conductors arranged substantially in parallel in a first direction and in a first region and a second plurality of conductors arranged substantially in parallel in second direction that is normal to the first direction and in a second region that is different than the first region. The conductors are sized, spaced, and directionally arranged such that signals of particular wavelengths and unknown polarization are reflected and other signals are allowed to penetrate the conformal wave selector.