Abstract: Techniques for establishing RF power connections with wireless power transmission systems in multi-wireless power transmission system environments are described herein. More specifically, the techniques describe a method for establishing a connection with an optimal wireless power transmission system when multiple wireless power transmission systems are within range.

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: Techniques for automated clock synchronization and control are discussed herein. For example, the techniques can include monitoring of transmissions for ‘known’ events and identifying timing or frequencies of such events. Deviations in the timing or frequencies of the events from expected times or frequencies may indicate that wireless power transmission system and receiver clocks are not synchronized. The deviations can be used to synchronize the clock for optimum wireless power transfer. Techniques are also described for enhancing clock control mechanisms to provide additional means for managing the adjustments of the clocks, as well as for enabling wireless power transmission systems to mimic client clock offsets for effective synchronization of events (e.g., beacon signals).

Abstract: The technology described herein relate to polarization adaptive wireless power transmission systems. In an implementation, a wireless power transmission system is described. The wireless power transmission system includes a plurality of antennas and control circuitry operatively coupled to the plurality of antennas. The control circuitry is configured to determine polarization information of a beacon signal received at multiple antennas of the plurality of antennas of the antenna array. The beacon signal is transmitted by a client device in a multipath wireless power delivery environment. The control circuitry is further configured to dynamically configure polarization information associated with each of the multiple antennas of the plurality of antennas of the antenna array to match the polarization information determined at respective antennas of the multiple antennas.

Abstract: Techniques are described herein for inferring a status of a primary battery for an electronic device in a wireless power delivery environment. In some embodiments, the status of the primary battery can be inferred, without any feedback regarding a status of the primary battery, based on a wireless charging profile of the primary battery and power usage characteristics that are monitored. In some embodiments, the wireless power transmission system utilizes the information inferred about a particular wireless device's primary battery to control or allocate how much wireless power is allocated to a particular wireless power receiver client embedded and/or otherwise associated with the wireless device.

Abstract: Embodiments of the present disclosure describe systems, methods, apparatuses for wirelessly charging handheld and consumer electronics in wireless power delivery environments. In some embodiments, techniques are described for retrofitting wireless power receivers into existing devices e.g., through wirelessly powered battery apparatuses. For example, the apparatuses discussed herein allow any device that accepts standard form factor batteries to be transformed into a wirelessly powered device. The wirelessly rechargeable battery apparatuses can be applied to any battery form factor including custom or semi-custom battery form factors for mobile phones, laptops, tablet computers, etc. Advantageously, among other benefits, the apparatuses discussed herein overcome the product integration challenges discussed above.

Abstract: Various techniques are described herein for efficiently transmitting and receiving wireless power and/or data signals. In one example, a transmitter includes multiple antennas, a dielectric material in proximity to the multiple antennas, and multiple scattering elements embedded in the dielectric material. One or more of the multiple scattering elements are configured to be excited by one or more signals emitted by the multiple antennas.

Abstract: Techniques are described herein for determining the distance from, to or between radiating objects in a multipath environment. For example, embodiments of the present disclosure describe techniques for determining the distance between an antenna array system (or wireless charger) and a wireless power receiver in a multipath wireless power delivery environment. Calibration techniques are disclosed that account for and/or otherwise quantify the multipath effects of the wireless power delivery environment. In some embodiment, the quantified multipath effects modify the Friis transmission equation, thereby facilitating the distance determination in multipath environments.

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.

Abstract: Systems and methods for improvement in bus communications with daisy-chained connected devices are described herein. In some embodiments, a bus communication system comprises a master chain controller, a first peripheral device, and a second peripheral device. A first communication bus couples a master interface port of the master chain controller to a slave interface port of the first peripheral device, and a second communication bus couples a master interface port of the first peripheral device to a slave interface port of the second peripheral device. The first communication device is configured to receive a communication packet via the first communication bus and to send a copy of the communication packet to the second peripheral device during transmission of the communication packet to the first peripheral device. The first communication device is also configured to send an idle state signal to the master chain controller.

Abstract: A transmitter assembly is useful in optimizing in the delivery of wireless power to a plurality of receivers. Each receiver measures its own battery need for power and transmits that measurement as a request to the transmitter. The transmitter is configured to normalize and compare battery need requests. The transmitter then allocates pulses of wireless power among the requesting receivers according to their battery need.

Abstract: Various embodiments of the present technology relate generally to wireless power systems. More specifically, some embodiments relate to the use of time reversal techniques utilizing time diversity (e.g., different multipath arrivals at the same antenna) to achieve coherency from the same transmission node. For example, instead of initiating outgoing transmissions (e.g., power signals) at the same time, various embodiments can initiate the outgoing signals from the various antennas in a staggered timing that is a reversal of the arrival times of an incoming signal. As a result of staggering the start of the outgoing signals, the signals will arrive at the destination at approximately the same time even though they have traveled different paths having different propagation delays.

Abstract: Embodiments of the present disclosure describe various techniques for integrating wireless power facilities or functionality into an existing object or device via embedded or deposited surface antennas. More specifically, the techniques described herein provide for the ability to embed and/or otherwise deposit spatially-arrayed adaptively-phased antennas on the surface of an existing object or device such that the antennas are exposed to air and/or otherwise lacking significant interference. In some embodiments, a wireless power control system is operatively coupled to the antennas to independently control phases of the phased of the antennas in a wireless power delivery 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: 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: 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. In some embodiments, the transmission code can be a pseudorandom sequence that is used by the wireless power delivery clients to encode transmitted beacon signals.

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: Described herein are embodiments of apparatuses and methods a wireless power transmission system (WPTS) receiving encoded beacon information from a wireless power receiver client (WPRC) and transmitting focused, directional wireless power to the WPRC.

Abstract: Techniques are described herein for load balancing wireless power receiver clients over multiple wireless power transmission systems in a wireless power delivery environment. In some embodiments, a method is described. The method includes identifying transmitter load information associated with at least two wireless power transmission systems of the multiple wireless power transmission systems, detecting a load imbalance between the at least two wireless power transmission systems based, at least in part, on the transmitter load information, and determining one or more operations for improving the load imbalance. The method further includes directing one or more of the at least two wireless power transmission systems to perform the one or more operations.

Abstract: Embodiments of an aperture expansion flap are disclosed. An aperture expansion flap may be used in conjunction with an antenna to expand an effective aperture of the antenna beyond its physical area, geometry, and orientation. An aperture expansion flap may include one or more resonators which may be tuned to adjust a reflection and/or refraction phase of an incident wireless signal, such that the wireless signal may be reflected and/or refracted at angle of reflection and/or refraction that is different than an angle of incidence.