Patents by Inventor Matthew S. Reynolds

Matthew S. Reynolds has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11921193
    Abstract: Examples of active millimeter-wave imaging systems are described which may utilize modulation schemes to provide illumination signals. The use of modulation techniques may allow for the use of direct-conversion receivers while retaining an ability to separate desired received signal from self-jamming and/or DC offset signal(s) generated by the direct-conversion receivers. In some examples, modulation schemes include the use of balanced orthogonal codes which may support MIMO or massive MIMO imaging systems.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: March 5, 2024
    Assignee: University of Washington
    Inventors: Andreas Pedross-Engel, Daniel Arnitz, Matthew S. Reynolds
  • Patent number: 11722347
    Abstract: Examples of digital architectures for OFDM backscatter communication are described herein that use RF switches and discrete loads to implement digitally controlled single-sideband OFDM backscatter devices. One or more transforms may be implemented, including one or more IFFTs, LUTs, and/or numerically-controlled oscillators using one or more sine LUTs.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: August 8, 2023
    Assignee: University of Washington
    Inventors: James D. Rosenthal, Matthew S. Reynolds
  • Publication number: 20230079634
    Abstract: Examples of imaging systems are described herein which may implement microwave or millimeter wave imaging systems. Examples described may implement partitioned inverse techniques which may construct and invert a measurement matrix to be used to provide multiple estimates of reflectivity values associated with a scene. The processing may be partitioned in accordance with a relative position of the antenna system and/or a particular beamwidth of an antenna. Examples described herein may perform an enhanced resolution mode of imaging which may steer beams at multiple angles for each measurement position.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 16, 2023
    Applicant: University of Washington
    Inventors: Matthew S. Reynolds, Andreas Pedross-Engel, Claire Watts, Sandamali Devadithya
  • Patent number: 11555916
    Abstract: Examples of imaging systems are described herein which may implement microwave or millimeter wave imaging systems. Examples described may implement partitioned inverse techniques which may construct and invert a measurement matrix to be used to provide multiple estimates of reflectivity values associated with a scene. The processing may be partitioned in accordance with a relative position of the antenna system and/or a particular beamwidth of an antenna. Examples described herein may perform an enhanced resolution mode of imaging which may steer beams at multiple angles for each measurement position.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: January 17, 2023
    Assignee: University of Washington
    Inventors: Matthew S. Reynolds, Andreas Pedross-Engel, Claire Watts, Sandamali Devadithya
  • Publication number: 20220397664
    Abstract: Examples of active millimeter-wave imaging systems are described which may utilize modulation schemes to provide illumination signals. The use of modulation techniques may allow for the use of direct-conversion receivers while retaining an ability to separate desired received signal from self-jamming and/or DC offset signal(s) generated by the direct-conversion receivers. In some examples, modulation schemes include the use of balanced orthogonal codes which may support MIMO or massive MIMO imaging systems.
    Type: Application
    Filed: August 19, 2022
    Publication date: December 15, 2022
    Applicant: University of Washington
    Inventors: Andreas Pedross-Engel, Daniel Arnitz, Matthew S. Reynolds
  • Patent number: 11476714
    Abstract: Systems and methods are described herein for providing wireless power to a mobile device, such as an aerial mobile device like an unmanned aerial vehicle (UAV). A navigational constraint model may prescribe a navigation path along which a wireless power transmission system can provide wireless power to the mobile device. Deviations from the prescribed path may require the mobile device to self-power. The prescription of a navigation path allows for the use of reduced-complexity wireless power transmitters that are fully capable of servicing the prescribed path. Multiple embodiments of prescribed paths with various limitations and features are set forth herein, along with multiple embodiments of wireless power transmission systems of reduced complexity and functionality to fully service the various embodiments of prescribed paths.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: October 18, 2022
    Assignee: Searete LLC
    Inventors: Lawrence F. Arnstein, Daniel Arnitz, Jeffrey A. Bowers, Joseph A. Hagerty, Guy S. Lipworth, David R. Nash, Matthew S. Reynolds, Clarence T. Tegreene
  • Patent number: 11460572
    Abstract: Examples of active millimeter-wave imaging systems are described which may utilize modulation schemes to provide illumination signals. The use of modulation techniques may allow for the use of direct-conversion receivers while retaining an ability to separate desired received signal from self-jamming and/or DC offset signal(s) generated by the direct-conversion receivers. In some examples, modulation schemes include the use of balanced orthogonal codes which may support MIMO or massive MIMO imaging systems.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 4, 2022
    Assignee: University of Washington
    Inventors: Andreas Pedross-Engel, Daniel Arnitz, Matthew S. Reynolds
  • Patent number: 11411597
    Abstract: Examples described herein include devices and methods that may facilitate interoperability between backscatter devices and wireless communication devices. For example, backscatter devices and methods for backscattering are described that provide a transmitted backscattered signal formatted in accordance with a wireless communication protocol (e.g. Bluetooth Low Energy, WiFi, IEEE 802.11, or IEEE 802.15.4). Such communication may reduce or eliminate any modifications required to wireless communication devices necessary to receive and decode backscattered signals.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: August 9, 2022
    Assignee: University of Washington
    Inventors: Matthew S. Reynolds, Joshua F. Ensworth
  • Publication number: 20220224583
    Abstract: Examples of digital architectures for OFDM backscatter communication are described herein that use RF switches and discrete loads to implement digitally controlled single-sideband OFDM backscatter devices. One or more transforms may be implemented, including one or more IFFTs, LUTs, and/or numerically-controlled oscillators using one or more sine LUTs.
    Type: Application
    Filed: January 14, 2022
    Publication date: July 14, 2022
    Applicant: University of Washington
    Inventors: James D. Rosenthal, Matthew S. Reynolds
  • Patent number: 11367936
    Abstract: The present technology pertains to a system and method of operation of a metamaterial phase shifter having various use applications. In one aspect of the present disclosure, a phase shifter includes a network of tunable impedance elements and a controller. The controller is coupled to the network of tunable impedance elements and configured to receive a phase shift input value and determine a corresponding tuning voltage to be supplied to each tunable impedance element of the network of tunable impedance elements based on the phase shift input value, the network of tunable impedance element being configured to shift a phase of an input signal based on tuning voltages supplied to the network of tunable impedance elements by the controller.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: June 21, 2022
    Assignee: The Invention Science Fund I LLC
    Inventors: Yaroslav A. Urzhumov, Matthew S. Reynolds, Guy S. Lipworth, Russell J. Hannigan, Daniel Arnitz, Joseph Hagerty
  • Patent number: 11355841
    Abstract: An embodiment of an antenna configured to form a high-power beam, such as a battery-charging beam, includes a transmission structure, signal couplers, amplifiers, and antenna elements. The transmission structure (e.g., a waveguide) is configured to carry a reference signal (e.g., a traveling reference wave), and each of the signal couplers is configured to generate a respective intermediate signal in response to the reference signal at a respective location along the transmission structure. Each of the amplifiers is configured to amplify, selectively, an intermediate signal from a respective one of the couplers, and each of the antenna elements (e.g., conductive patches) is configured to radiate a respective elemental signal in response to an amplified intermediate signal from a respective one of the amplifiers. In operation, the elemental signals interfere with one another to form a transmission beam, such as a battery-charging, or other high-power, transmission beam.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: June 7, 2022
    Assignee: Searete LLC
    Inventors: Matthew S. Reynolds, Guy Lipworth, Joseph Hagerty, Daniel Arnitz, Yaroslav Aleksandrovich Urzhumov
  • Patent number: 11271300
    Abstract: An embodiment of an antenna array includes a cavity, signal couplers, and antenna elements. The cavity is configured to reinforce a reference signal (e.g., a standing reference wave) having a wavelength ?, and each of the signal couplers is configured to generate a respective intermediate signal in response to the reference signal at a respective location of the cavity. And each of the antenna elements (e.g., conductive patches) is configured to radiate a respective elemental signal in response to an intermediate signal from a respective one of the signal couplers. In operation, the elemental signals interfere with one another to form a transmission beam. Controlling the cavity to introduce phase differences between the antenna elements can allow a wider pitch between adjacent antenna elements without the need for large, costly phase shifters, where the pitch can approach its theoretical limit of approximately ?/2.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: March 8, 2022
    Assignee: Searete LLC
    Inventors: Matthew S. Reynolds, Guy Lipworth, Joseph Hagerty, Daniel Arnitz, Yaroslav Aleksandrovich Urzhumov
  • Publication number: 20210405182
    Abstract: Examples of imaging systems are described herein which may implement microwave or millimeter wave imaging systems. Examples described may implement partitioned inverse techniques which may construct and invert a measurement matrix to be used to provide multiple estimates of reflectivity values associated with a scene. The processing may be partitioned in accordance with a relative position of the antenna system and/or a particular beamwidth of an antenna. Examples described herein may perform an enhanced resolution mode of imaging which may steer beams at multiple angles for each measurement position.
    Type: Application
    Filed: December 8, 2017
    Publication date: December 30, 2021
    Applicant: University of Washington
    Inventors: Matthew S. Reynolds, Andreas Pedross-Engel, Claire Watts, Sandamali Devadithya
  • Patent number: 11183887
    Abstract: System and methods are described herein for providing wireless power to a target device, such as a laptop computer, a mobile phone, a vehicle, robot, or an unmanned aerial vehicle or system (UAV) or (UAS). A tunable multi-element transmitter may transmit electromagnetic radiation (EMR) to the target device using any of a wide variety of frequency bands. A location determination subsystem and/or range determination subsystem may determine a relative location, orientation, and/or rotation of the target device. For a target device within a distance range for which a smallest achievable waist of the Gaussian beam of the EMR at an operational frequency is smaller than the multi-element EMR receiver of the target device, a non-Gaussian beamform may be determined to increase efficiency, decrease overheating, reduce spillover, increase total power output of rectenna receivers on the target device, or achieve another target power delivery goal.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: November 23, 2021
    Assignee: Searete LLC
    Inventors: Daniel Arnitz, Jeffrey A. Bowers, Joseph A. Hagerty, Russell J. Hannigan, Guy S. Lipworth, David R. Nash, Matthew S. Reynolds, Clarence T. Tegreene, Yaroslav A. Urzhumov
  • Patent number: 11171678
    Abstract: Examples of receivers and receiver techniques are described herein. An example system may include a carrier source that may provide a wireless carrier signal and a wireless communication device, separate from the carrier source. The wireless communication device may provide a wireless communication signal containing data. A receiver may include an antenna positioned to receive the wireless carrier signal and the wireless communication signal, a two-port mixer coupled to the antenna and configured to mix the wireless carrier signal and the wireless communication signal to provide an intermediate frequency signal, and a demodulator configured to extract, at least in part, the data from the intermediate frequency signal.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: November 9, 2021
    Assignee: University of Washington
    Inventors: Alexander Tung Hoang, Joshua F. Ensworth, Matthew S. Reynolds
  • Patent number: 11133717
    Abstract: Examples described herein utilize a backscatter signal provided by a wirelessly powered device to estimate channel information, (e.g., a channel transfer function) between the wirelessly powered device and a transmitter system. The channel information may be used to optimize MIMO power transfer for linear as well as nonlinear backscatter devices. Examples of die method ‘may shift some or all of the power cost and complexity of coherent channel measurements from the WFD to the transmitters), and allow WPT optimization to milliwatt- or microwatt-class wirelessly powered devices.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: September 28, 2021
    Assignee: University of Washington
    Inventors: Matthew S. Reynolds, Daniel Arnitz
  • Patent number: 11119141
    Abstract: Activity sensing in the home has a variety of important applications, including healthcare, entertainment, home automation, energy monitoring and post-occupancy research studies. Many existing systems for detecting occupant activity require large numbers of sensors, invasive vision systems, or extensive installation procedures. Disclosed is an approach that uses a single plug-in sensor to detect a variety of electrical events throughout the home. This sensor detects the electrical noise on residential power tines created by the abrupt switching of electrical devices and the noise created by certain devices while in operation. Machine learning techniques are used to recognize electrically noisy events such as turning on or off a particular light switch, a television set, or an electric stove. The system has been tested to evaluate system performance over time and in different types of houses. Results indicate that various electrical events can be learned and classified with accuracies ranging from 85-90%.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: September 14, 2021
    Assignee: GEORGIA TECH RESEARCH CORPORATION
    Inventors: Shwetak N. Patel, Thomas M. Robertson, Gregory D. Abowd, Matthew S. Reynolds
  • Publication number: 20210278526
    Abstract: Examples of active millimeter-wave imaging systems are described which may utilize modulation schemes to provide illumination signals. The use of modulation techniques may allow for the use of direct-conversion receivers while retaining an ability to separate desired received signal from self-jamming and/or DC offset signal(s) generated by the direct-conversion receivers. In some examples, modulation schemes include the use of balanced orthogonal codes which may support MIMO or massive MIMO imaging systems.
    Type: Application
    Filed: August 10, 2017
    Publication date: September 9, 2021
    Applicant: University of Washington
    Inventors: Andreas Pedross-Engel, Daniel Arnitz, Matthew S. Reynolds
  • Publication number: 20210126330
    Abstract: The present technology pertains to a system and method of operation of a metamaterial phase shifter having various use applications. In one aspect of the present disclosure, a phase shifter includes a network of tunable impedance elements and a controller. The controller is coupled to the network of tunable impedance elements and configured to receive a phase shift input value and determine a corresponding tuning voltage to be supplied to each tunable impedance element of the network of tunable impedance elements based on the phase shift input value, the network of tunable impedance element being configured to shift a phase of an input signal based on tuning voltages supplied to the network of tunable impedance elements by the controller.
    Type: Application
    Filed: November 9, 2020
    Publication date: April 29, 2021
    Inventors: Yaroslav A. Urzhumov, Matthew S. Reynolds, Guy S. Lipworth, Russell J. Hannigan, Daniel Arnitz, Joseph Hagerty
  • Publication number: 20210099198
    Abstract: Examples described herein include devices and methods that may facilitate interoperability between backscatter devices and wireless communication devices. For example, backscatter devices and methods for backscattering are described that provide a transmitted backscattered signal formatted in accordance with a wireless communication protocol (e.g. Bluetooth Low Energy, WiFi, IEEE 802.11, or IEEE 802.15.4). Such communication may reduce or eliminate any modifications required to wireless communication devices necessary to receive and decode backscattered signals.
    Type: Application
    Filed: May 6, 2020
    Publication date: April 1, 2021
    Applicant: University of Washington
    Inventors: Matthew S. Reynolds, Joshua F. Ensworth