Abstract: The embodiments described herein comprise a distributed wireless power transmission system including a plurality of wireless power transmission systems (WPTSs) coordinating transmissions to create a virtual WPTS. The plurality of WPTS coordinate amongst each other to compensate for local phase shift differences between respective clock sources so that transmissions from the WPTSs constructively interfere at a wireless power receiver client (WPRC).

Abstract: Support of coexistence of wireless transmission equipment in shared wireless medium environments is disclosed, which is applicable to various types of wireless transmission equipment. For instance, a wireless power transmission system (WPTS) delivers power to wireless power receiver clients via transmission of wireless power signals using one or more frequencies and/or channels within shared wireless medium environments in which other wireless equipment is operating, such as access points and stations in wireless local area networks (WLANs). The WPTS is configured to co-exist with the operations of the other wireless equipment within the shared wireless medium environment by adapting its transmission operations to utilize frequencies or channels that do not interfere with other equipment and/or implementing co-channel and shared channels operations under which access to channels is implemented using standardized WLAN protocols such as PHY and MAC protocols used for 802.11 (Wi-Fi™) networks.

Abstract: The technology is generally directed towards wireless power charging of one or more receiver devices within a container that is electromagnetically shielded with respect to the frequency or frequencies used for the wireless charging. A controller determines, via signaling from one or more sensors, that the container is in the electromagnetically shielded state with respect to emitting external radiation at the charging frequency or frequencies. When electromagnetically shielded, the controller controls the output power state of a wireless power transmitter device to charge the one or more receiver devices. The controller can determine when to stop the charging of a receiver device, such as when sufficiently charged. The controller and wireless power transmitter device can charge the one or more receiver devices selectively, e.g., based on which one needs more charge or other criterion. The controller can obtain and externally communicate the state of charge of the receiver device(s).

Abstract: Systems and methods are disclosed for wireless power delivery that can provide wireless power to a wireless power receiver (WPR). A wireless power transmission system (WPTS) can include a transceiver. The WPTS can include a controller operably coupled to the transceiver. The controller can direct the transceiver to transmit a discovery signal. The controller can direct the transceiver to listen for a backscatter signal transmitted by a WPR responsive to the discovery signal being transmitted. The controller can determine a location of the WPR based on the backscatter signal and in response to the backscatter signal being received by the transceiver. The controller can direct the transceiver to transmit a wireless power signal to the location of the WPR.

Abstract: A flat panel substrate with integrated antennas and wireless power transmission system for delivering power to a receiving device is presented herein. A method can comprise depositing, onto a flat panel substrate, an antenna layer comprising multiple adaptively phased antennas elements; and depositing, onto the flat panel substrate, respective thin film transistor (TFT)-based antenna management circuits for the multiple adaptively phased antenna elements—the respective TFT-based antenna management circuits being operable to measure respective first phases at which first signals are received at the multiple adaptively phased antenna elements, and based on the respective first phases, control respective second phases at which second signals are transmitted from the multiple adaptively phased antenna elements to facilitate delivery, via the second signals, of power to the receiving 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: The technology described herein relates to techniques for calibrating wireless power transmission systems for operation in multipath wireless power delivery environments. In an implementation, a method of calibrating a wireless power transmission system for operation in a multipath environment is disclosed. The method includes characterizing a receive path from a calibration antennae element to a first antennae element of a plurality of antennae elements of the wireless power transmission system, characterizing a transmit path from the first antennae element to the calibration antennae element, and comparing the transmit path to the receive path to determine a calibration value for the first antennae element in the multipath environment.

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: A system includes at least one antenna and a controller. The controller is configured to identify a phase of a first signal received by the at least one antenna from a wireless device. The controller is configured to determine transmission settings for the at least one antenna based on the identified phase. The controller is configured to generate, according to the transmission settings, a second signal for focusing on a wireless device. A method includes identifying a phase of a first signal received by a first transceiver from a second transceiver. The method includes determining transmission settings for the first transceiver based on the identified phase. The method includes generating, according to the transmission settings, a second signal for focusing on the second transceiver. Embodiments improve the power efficiency of wireless signal transmission.

Abstract: Described herein are embodiments of apparatuses and methods for optimizing pairing of a wireless power transmission system (WPTS) with a wireless power receiver client (WPRC) in a localized system. A current WPTS-WPRC pairing and at least one alternate WPTS-WPRC pairing are assessed and the WPTS-WPRC pairing is updated based on associated pairing quality metrics. In this way, a system of many WPTSs and WPRCs will approach an Epsilon equilibrium such that no WPRC would be significantly better served by being paired with a different WPTS.

Abstract: In retrodirective wireless power delivery environments wireless power receivers generate and send beacon signals that are received by multiple antennas of a wireless power transmission system. The beacon signals provide the charger with timing information for wireless power transfers and also indicate directionality of the incoming signal. As discussed herein, the directionality information is employed when transmitting in order to focus energy (e.g., power wave delivery) on individual wireless power receiver clients. Techniques are described herein for reducing the burden of sampling the beacon signals across the multiple antennas and determining the directionality of the incoming wave. In some embodiments, the techniques leverage previously calculated values to simplify the receiver sampling.

Abstract: Systems and methods are disclosed for wireless power delivery that can provide wireless power, via a retrodirective wireless power transfer (WPT) channel, to a wireless power recipient in response to a modulated backscatter signal from a wireless power receiver. A wireless power receiver can produce a modulated backscatter signal and transmit such to a power delivery system to initiate a wireless power transfer linkage. In some examples, a dual-band technique can be implemented where a first band can be used as a dedicated retrodirective WPT channel while a data communication node can utilize a second band for a low energy compatible data communication type. Both a beacon signal (the backscattered signal) for retrodirective linkage at the first band and the communication signals at the second band can be produced via backscattering at the wireless power receiver. A backscattered beacon signal and a communication signal may be modulated and frequency multiplexed.

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: A method for operating an Internet of Things (IoT) device may be implemented in a wireless power receiver (WPR) and may include the steps of: transmitting a beacon signal (BS) to a wireless power transmitter (WPT), responsively receiving a wireless power signal (WPS) from the WPT, transducing the WPS to an electric current for charging an energy storage device, receiving data representative of IoT information from the IoT device, and transmitting the data representative of IoT information to the WPT. The method may be further implemented in the WPT and may include the steps-performed by the WPT-of: receiving the BS from the WPR, responsively transmitting the WPS to the WPR, receiving the data representative of IoT information, and at least one of: causing the IoT information to be stored in a memory storage device, and relaying the IoT information to a subsystem in communication with the WPT.

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: 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: Systems and methods are described for receiving wireless power and providing wired power. In some embodiments, a predictive phase estimation apparatus comprises a transceiver module configured to receive a plurality of beaconing signals from a wireless client during a beacon cycle. The predictive phase estimation apparatus also comprises a phase compensation module configured to store the received plurality of beaconing signals, a phase predictor module is coupled to the transceiver module and configured to calculate predictive phases based on the received plurality of beaconing signals and based on beaconing signals received from the wireless client prior to the beacon cycle, and a signal converter coupled to the transceiver module. The signal converter is configured to form transmission signals based on the predictive phases and supply the transmission signals to the transceiver module. The transceiver module also transmits the transmission signals for delivery of wireless power to the wireless client.

Abstract: The embodiments described herein comprise a distributed wireless power transmission system including a plurality of wireless power transmission systems (WPTSs) coordinating transmissions to create a virtual WPTS. The plurality of WPTS coordinate amongst each other to compensate for local phase shift differences between respective clock sources so that transmissions from the WPTSs constructively interfere at a wireless power receiver client (WPRC).

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.