USING PHASED ARRAYS OF WAVEGUIDE COUPLERS IN WAVEGUIDE CAVITIES TO PREVENT ILLEGITIMATE RECEPTION OF POWER

    公开(公告)号:US20190181531A1

    公开(公告)日:2019-06-13

    申请号:US15837411

    申请日:2017-12-11

    Inventor: Brian John Adolf

    Abstract: Systems and methods for denying power to unauthorized power loads within a spherical waveguide bounded by the Earth's surface are disclosed. One or more eigenmodes of the Earth-ionosphere waveguide may be computed based on a mathematical model incorporating electrical properties of the terrestrial surface and plasma physics of the ionospheric layer. A phased array of wave guide couplers, each including an array of electrically-connected waveguide-coupling elements, may be configured at different geographic locations for coupling to the one or more eigenmodes and generating standing waves in the Earth-ionosphere waveguide. Power loads may be detected by way of power reflections, and power nodes and nulls of the standing waves may be steered with respect to specified locations by adjusting relative phases and/or amplitudes of the waveguide couplers. Locations of power loads may be triangulating reflections. Power nulls of the standing waves may be steered to locations of unauthorized power loads.

    Mobile Hybrid Transmit/Receive Node for Near-Field Wireless Power Delivery

    公开(公告)号:US20190036349A1

    公开(公告)日:2019-01-31

    申请号:US16148479

    申请日:2018-10-01

    Abstract: A system and method for a mobile hybrid transmitter/receiver (TX/RX) node for wireless resonant power delivery is disclosed. A hybrid TX/RX can be configured to travel to remote, wirelessly-powerable receivers and deliver power to them wirelessly. A hybrid TX/RX device can include a transmitter component (TX), a receiver (RX) component, and a power store for storing power for supply to remote receivers. The TX/RX device can be configured in an autonomous unmanned vehicle operational to travel between a fixed source transmitter devices and one or more specified locations that may be host to one or more remote receivers. In the location of the one or more remote receivers, the TX component may function to wirelessly transfer power from the power store to the one or more remote receivers. In the location of the fixed source transmitter device, RX component can be configured to receive power via wireless power transfer, and to use the received power to at least partially replenish the power store.

    Mobile hybrid transmit/receive node for near-field wireless power delivery

    公开(公告)号:US10181729B1

    公开(公告)日:2019-01-15

    申请号:US14940417

    申请日:2015-11-13

    Abstract: A system and method for a mobile hybrid transmitter/receiver (TX/RX) node for wireless resonant power delivery is disclosed. A hybrid TX/RX can be configured to travel to remote, wirelessly-powerable receivers and deliver power to them wirelessly. A hybrid TX/RX device can include a transmitter component (TX), a receiver (RX) component, and a power store for storing power for supply to remote receivers. The TX/RX device can be configured in an autonomous unmanned vehicle operational to travel between a fixed source transmitter devices and one or more specified locations that may be host to one or more remote receivers. In the location of the one or more remote receivers, the TX component may function to wirelessly transfer power from the power store to the one or more remote receivers. In the location of the fixed source transmitter device, RX component can be configured to receive power via wireless power transfer, and to use the received power to at least partially replenish the power store.

    Extending the distance range of near-field wireless power delivery

    公开(公告)号:US10135257B1

    公开(公告)日:2018-11-20

    申请号:US14940391

    申请日:2015-11-13

    Abstract: A system and method for wireless resonant power transfer is disclosed. The system may include a transmitter that, in addition to being configured for resonantly coupling power into an oscillating electric and/or magnetic field, is also configured to transmit one or more test signals. Test signals can include single frequency continuous wave test signals, frequency sweep test signals, and time-pulsed modulated test signals. By comparing measurements of phase and amplitude of both the transmitted test signal and one or more reflections of the test signal reflected by one or more reflecting entities, electromagnetic properties of the one or more reflecting entities may be determined. The determined properties may then be used to enhance the efficiency and/or effectiveness of power transfer, and/or to distinguish between legitimate and illegitimate consumption of wirelessly transferred power by devices in the oscillating field.

    SENSING AND FEEDBACK FOR THE FORMATION OF COMPLEX THREE-DIMENSIONAL ACOUSTIC FIELDS

    公开(公告)号:US20220355546A1

    公开(公告)日:2022-11-10

    申请号:US17869613

    申请日:2022-07-20

    Abstract: An apparatus includes a precursor dispenser for dispensing a precursor material into a workspace, one or more acoustic sources configured to direct acoustic waves towards the workspace to provide acoustic fields that arrange the precursor material in a three-dimensional shape in the workspace, one or more sensors configured to detect a distribution of the precursor material in the workspace, and an electronic controller in communication with the precursor dispenser, the one or more acoustic sources, and the one or more sensors, the electronic controller being programmed to cause the one or more acoustic sources to adjust the acoustic fields to reduce deviations in the distribution of the precursor material from the three-dimensional shape in the workspace.

    Post-fabrication photonic performance tuning

    公开(公告)号:US11092746B1

    公开(公告)日:2021-08-17

    申请号:US16719489

    申请日:2019-12-18

    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for tuning photonic device performance. In one aspect, a method includes receiving an initial photonic device configuration including multiple coupling structures and multiple photonic components. A first amount of light coupling between a first photonic component and a second photonic component of the multiple photonic components is received, which depends upon a subset of the coupling structures that are located between the first photonic component and the second photonic component. One or more coupling structures of the subset of coupling structures located between the first photonic component and the second photonic component are determined to be removed to cause the light coupling between the first photonic component and the second photonic component to change from the first amount of coupling to a target amount of coupling.

    Using phased arrays of waveguide couplers to excite earth-ionosphere low loss modes

    公开(公告)号:US10854943B2

    公开(公告)日:2020-12-01

    申请号:US15837380

    申请日:2017-12-11

    Inventor: Brian John Adolf

    Abstract: Systems and methods for efficient coupling to low-loss eigenmodes of a spherical waveguide bounded by the Earth's surface and its ionosphere from multiple locations within the waveguide are disclosed. One or more eigenmodes of the Earth-ionosphere waveguide may be computed based on a mathematical model incorporating electrical properties of the terrestrial surface and plasma physics of the ionospheric layer. Multiple wave guide couplers, each including an array of electrically-connected waveguide-coupling elements, may be configured at different geographic locations for coupling to the one or more eigenmodes. By adjusting relative phases and/or amplitudes of the waveguide couplers, as well as frequencies, power may be coupled into standing waves of the Earth-ionosphere waveguide. The adjustments may also account or compensate for diurnal variations of ionosphere by steering power nodes and nulls of the standing waves away from regions of potential ohmic losses.

    EXCITING LARGE WAVEGUIDE MODES USING SUPERGAIN ANTENNAS

    公开(公告)号:US20190181686A1

    公开(公告)日:2019-06-13

    申请号:US15837362

    申请日:2017-12-11

    Inventor: Brian John Adolf

    Abstract: Systems and methods for efficient coupling to low-loss eigenmodes of a spherical waveguide bounded by the Earth's surface and its ionosphere are disclosed. One or more eigenmodes of the Earth-ionosphere waveguide may be computed based on a mathematical model incorporating electrical properties of the terrestrial surface and plasma physics of the ionospheric layer. An array of electrically-connected waveguide-coupling elements may be configured for coupling to the one or more eigenmodes. By adjusting relative phases and/or amplitudes of the waveguide-coupler elements, as well as frequencies, the electrical size of the array may be made much larger than its physical size, and substantial electromagnetic energy may be targeted to preferentially excite the one or more eigenmodes. The adjustments may also account or compensate for non-homogeneous propagation properties of the ionosphere, and help reduce ohmic losses in the ionosphere.

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