Abstract: A power bank includes, in part, a rechargeable battery, a wireless power recovery unit adapted to receive power wirelessly, a battery charging circuit adapted to deliver the power recovered by the power recovery unit to the rechargeable battery, an output interface, and a voltage reconditioning circuit adapted to supply power from the rechargeable battery to the output interface for delivery to an external device. The wireless power recovery unit may include one or more of a multitude of photodiodes adapted to convert a coherent optical signal to electrical power, an acoustic transducer adapted to convert acoustic waves to an electrical power, an inductive coupling circuit adapted to convert time varying magnetic flux to electrical power, and an RF power recovery unit adapted to convert an RF signal to electrical power.

Abstract: An RF power detector adapted to detect an RF power of an RF signal, includes, in part, an antenna adapted to receive the RF signal, a narrow-band RF power converter adapted to convert the RF signal to a DC signal, an accelerometer, and a magnetometer. The accelerometer and magnetometer are adapted to determine the orientation and location of the power detector. The power detector optionally includes a gyroscope. The narrow-band RF power converter may be a rectifier tuned to the frequency of the RF signal. The power detector optionally includes an indicator adapted to provide information representative of the amount of the DC power of the DC signal, as well as position and orientation of the power detector. The power detector may be adapted to be inserted into a mobile device so as to provide the information about the amount of DC power, orientation and position to the mobile device.

Abstract: A co-prime transceiver attains higher fill factor, improved side-lobe rejection, and higher lateral resolution per given number of pixels. The co-prime transceiver includes in part, a transmitter array having a multitude of transmitting elements and a receiver array having a multitude of receiving elements. The distance between each pair of adjacent transmitting elements is a first integer multiple of the whole or fraction of the wavelength of the optical. The distance between each pair of adjacent receiving elements is a second integer multiple of the whole or fraction of the wavelength of the optical signal. The first and second integers are co-prime numbers with respect to one another. The transceiver is fully realizable in a standard planar photonics platform in which the spacing between the elements provides sufficient room for optical routing to inner elements.

Abstract: A method of RF power delivery includes, in part, transmitting a first group of RF signals having a first group of phases to a first mobile device during a first time period. The first mobile device has a first position and a first orientation during the first time period. The method further includes, in part, transmitting a second group of RF signals having a second group of phases to the first mobile device during a second time period. The second group of phases are determined in accordance with a second position and a second orientation of the first mobile device during the second time period. The second position and second orientation are determined using sensors disposed in the first mobile device and transmitted via a wireless communications channel to an RF power generating unit transmitting the first and second group of RF signals.

Abstract: An RF power detector adapted to detect an RF power of an RF signal, includes, in part, an antenna adapted to receive the RF signal, a narrow-band RF power converter adapted to convert the RF signal to a DC signal, an accelerometer, and a magnetometer. The accelerometer and magnetometer are adapted to determine the orientation and location of the power detector. The power detector optionally includes a gyroscope. The narrow-band RF power converter may be a rectifier tuned to the frequency of the RF signal. The power detector optionally includes an indicator adapted to provide information representative of the amount of the DC power of the DC signal, as well as position and orientation of the power detector. The power detector may be adapted to be inserted into a mobile device so as to provide the information about the amount of DC power, orientation and position to the mobile device.

Abstract: A phased-array includes, in part, N transceivers each including a receiver and a transmitter, and a controller. The phased array is configured to transmit a first radio signal from a first element of the array during a first time period, receive the first radio signal from a second element of the array, recover a first value associated with the radio signal received by the second element, transmit a second radio signal from the second element of the array during a second time period, receive the second radio signal from the first element of the array, recover a second value associated with the radio signal received by the first element, and determine a first phase of a reference signal received by the second element from the recovered first and second values. The first phase is relative to a second phase of the reference signal received by the first element.

Abstract: A wireless service delivery system determines the position of a device requesting the wireless service and delivers a wireless service to the device if the device's position is determined to fall within a predefined region of a space. The wireless service delivery may deliver no service or a lower quality/slower service if the device is determined to fall outside the predefined region of the space. The coordinates of the points along the perimeter of the predefined region are stored in a memory and are optionally established during a setup phase by moving a localization device along the perimeter of the region of the space.

Abstract: A wireless service delivery system determines the position of a device requesting the wireless service and delivers a wireless service to the device if the device's position is determined to fall within a predefined region of a space. The wireless service delivery may deliver no service or a lower quality/slower service if the device is determined to fall outside the predefined region of the space. The coordinates of the points along the perimeter of the predefined region are stored in a memory and are optionally established during a setup phase by moving a localization device along the perimeter of the region of the space.

Abstract: An RF signal generator wirelessly transferring power to a wireless device includes, in part, a multitude of generating elements generating a multitude of RF signals transmitted by a multitude of antennas, a wireless signal receiver, and a control unit controlling the phases and/or amplitudes of the RF signals in accordance with a signal received by the receiver. The signal received by the receiver includes, in part, information representative of the amount of RF power the first wireless device receives. The RF signal generator further includes, in part, a detector detecting an RF signal caused by scattering or reflection of the RF signal transmitted by the antennas. The control unit further controls the phase and/or amplitude of the RF signals in accordance with the signal detected by the detector.

Abstract: A space-based solar power station, a power generating satellite module and/or a method for collecting solar radiation and transmitting power generated using electrical current produced therefrom is provided. Power transmitters can be coordinated as a phased array and the power generated by the phased array is transmitted to one or more power receivers to achieve remote wireless power generation and delivery. In many embodiments, a reference signal is distributed within the space-based solar power station to coordinate the phased array. In several embodiments, determinations of the relative locations of the antennas in the array are utilized to evaluate the phase shift and/or amplitude modulation to apply the reference signal at each power transmitter.

Abstract: A method of generating a DC power from incident RF waves, includes, in part, measuring the amount of power being received by a device generating the DC power, and controlling the phases of the RF waves being transmitted by a multitude of RF transmitters in accordance with the measured power. A programmable test load is optionally used at the device to measure the received power. The device optionally includes, an antenna, an RF-to-DC converter to generate the DC power, an impedance matching/transformation circuit, and an RF load/matching circuit.

Abstract: A roaming and articulating wireless power delivery device includes, in part, an optical assembly adapted to deliver an optical beam, an energy storage unit, a controller, and an electrically driven moving platform. The moving platform may include an inertia measurement, a GPS, bump sensors and proximity sensors. The device may further include a camera, a gradient filter, and a wireless communication link via which the device establishes a two-way communication with a recovery unit being wirelessly powered.

Abstract: An RF power delivery system includes, in part, an N×M array of transmitting elements disposed along N rows and M columns where M an N are integer numbers, and a phase adjustment unit adapted to receive information representative of a change in position of a device targeted to receive the RF power wirelessly from the device and generate a codeword in response, and apply the codeword to adjust phases of the array of transmitting elements.

Abstract: A wireless power generating unit, includes, in part, a multitude of transmitting elements transmitting a multitude of RF signals to a wireless device, a backscatter RF receiver configured to receive the backscattered RF signal from the wireless device in response to the transmission of the RF signals, and a processor adapted to change the phases of the multitude of RF signals values in accordance with the strength of the received backscattered signal. The phases are changed to maximize the strength of the backscattered signal which may be modulated by varying a resistive load at the wireless device. The modulated backscattered signal may be encoded to carry information. The modulation frequency may be representative of the identity of the wireless device. The information may define the amount of RF power received by the wireless device.

Abstract: A power bank includes, in part, a rechargeable battery, a wireless power recovery unit adapted to receive power wirelessly, a battery charging circuit adapted to deliver the power recovered by the power recovery unit to the rechargeable battery, an output interface, and a voltage reconditioning circuit adapted to supply power from the rechargeable battery to the output interface for delivery to an external device. The wireless power recovery unit may include one or more of a multitude of photodiodes adapted to convert a coherent optical signal to electrical power, an acoustic transducer adapted to convert acoustic waves to an electrical power, an inductive coupling circuit adapted to convert time varying magnetic flux to electrical power, and an RF power recovery unit adapted to convert an RF signal to electrical power.

Abstract: Wireless power transfer systems and methods for focusing wireless power transfer arrays are disclosed. One embodiment includes a wireless power generating unit (GU) including a processing system configured to focus the RF power sources by: sending control signals to the control circuitry to perform a plurality of sweeps using each of a plurality of different basis masks; receiving a message from a RU containing a report based upon received power measurements made by the RU; and sending control signals to focus the RF power sources based on the received message from the RU. Furthermore, each sweep includes performing a phase sweep across a phase sweep range at a plurality of phase step increments with respect to a first group of RF power sources identified in a basis mask, where the first group of RF power sources comprises a plurality of RF power sources.

Abstract: An optical phased array (OPA) includes, in part, a multitude of phase control elements disposed along N rows and M columns forming an N×M array. The phase control elements disposed along ith row are coupled to ith row signal line and phase control elements disposed along jth column are coupled to jth column signal line. The OPA further includes, in part, a row select block having N switches each configured to couple one of the N rows of the phase control elements to a digital-to-analog converter (DAC) in response to a row select signal. The OPA further includes, in part, a column select block having M switches each configured to couple one of the M rows of the phase control elements to a ground terminal in response to a column select signal.

Abstract: Wireless power transfer systems and methods for focusing wireless power transfer arrays are disclosed. One embodiment includes a wireless power generating unit (GU) including a processing system configured to focus the RF power sources by: sending control signals to the control circuitry to perform a plurality of sweeps using each of a plurality of different basis masks; receiving a message from a RU containing a report based upon received power measurements made by the RU; and sending control signals to focus the RF power sources based on the received message from the RU. Furthermore, each sweep includes performing a phase sweep across a phase sweep range at a plurality of phase step increments with respect to a first group of RF power sources identified in a basis mask, where the first group of RF power sources comprises a plurality of RF power sources.

Abstract: A Doppler sensing system includes, in part, at least one transmit antenna, a processor configured to cause the transmit antenna to transmit signals during M repeating cycles of a sequence, and a receiver configured to receive reflections of the signals generated by the transmit antenna. For each cycle, the transmit antenna is set to N different transmit settings each during a different one of N time periods to generate N different signals. The sequence may be uniform or non-uniform. The N time periods may be substantially similar. The transmitter may be set at least twice to at least one of the N settings during each cycle. The receiver optionally includes, in part, a first frequency downconverter adapted to generate in-phase (I) signals and a second frequency downconverter adapted to generate quadrature-phase (Q) signals. The processor generates the I and Q signals from the signals the processor receives from the receiver.

Abstract: A wireless power delivery system includes, in part, a roaming and articulating wireless power transfer device. The roaming and articulating wireless power device includes, in part, a wireless power generation unit, an energy storage unit, a controller, and an electrically driven moving platform. The device further includes, in part, at least one RF transmitter or an array of RF transmitters adapted to radiate RF signals at the same frequency. The controller is adapted to control the phase of each RF transmitter independently. The array of RF transmitters may be foldable and expandable. The moving platform may include an inertia measurement, a GPS, bump sensors and proximity sensors. The device may further include a camera, and a wireless communication link via which the device establishes a two-way communication with a recovery unit being wirelessly powered.