Patents by Inventor Aaron N. Parks

Aaron N. Parks 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: 10587445
    Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: March 10, 2020
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
  • Patent number: 10547484
    Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: January 28, 2020
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
  • Patent number: 10447331
    Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 15, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • Patent number: 10382161
    Abstract: Example devices described herein include endpoint devices which may communicate with an access point device by modulating a channel associated with the wireless communication to encode transmit data. The channel modulation may be performed by utilizing a switch to control an impedance of an antenna at the endpoint device to either reflect or absorb wireless network communication signals received by the endpoint device. The access point device may extract the transmit data by decoding changes in the channel caused, at least in part, by the modulation. Access point devices may transmit a pattern of packets—the presence or absence of which may correspond with transmit data. Endpoint devices may decode this data by using an energy detector to differentiate between the presence or absence of a packet.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: August 13, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
  • Patent number: 10270639
    Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: April 23, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
  • Publication number: 20190116078
    Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.
    Type: Application
    Filed: December 7, 2018
    Publication date: April 18, 2019
    Applicant: UNIVERSITY OF WASHINGTON
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
  • Patent number: 10187177
    Abstract: Example devices described herein include endpoint devices which may communicate with an access point device by modulating a channel associated with the wireless communication to encode transmit data. The channel modulation may be performed by utilizing a switch to control an impedance of an antenna at the endpoint device to either reflect or absorb wireless network communication signals received by the endpoint device. The access point device may extract the transmit data by decoding changes in the channel caused, at least in part, by the modulation. Access point devices may transmit a pattern of packets—the presence or absence of which may correspond with transmit data. Endpoint devices may decode this data by using an energy detector to differentiate between the presence or absence of a packet.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: January 22, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
  • Patent number: 10187241
    Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: January 22, 2019
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
  • Publication number: 20180358996
    Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.
    Type: Application
    Filed: July 24, 2018
    Publication date: December 13, 2018
    Applicant: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • Publication number: 20180241604
    Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.
    Type: Application
    Filed: April 20, 2018
    Publication date: August 23, 2018
    Applicant: UNIVERSITY OF WASHINGTON
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
  • Patent number: 10033424
    Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: July 24, 2018
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • Patent number: 9979240
    Abstract: Examples described herein include systems and methods for multiband harvesting. An example system may include a single wideband antenna followed by several narrowband rectifier chains. Each rectifier chain may include a bandpass filter, a tuned impedance matching network, and a rectifier. The outputs of the rectifiers may be combined using a summation network. The summation network, which may be a diode summation network, may in some examples provide good performance even when only a subset of the narrowband harvesters (e.g. a subset of the rectifier chains) is excited.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: May 22, 2018
    Assignee: University of Washington
    Inventors: Aaron N. Parks, Joshua R. Smith
  • Patent number: 9973367
    Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: May 15, 2018
    Assignee: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
  • Publication number: 20170331509
    Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.
    Type: Application
    Filed: May 22, 2017
    Publication date: November 16, 2017
    Applicant: University of Washington
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • Publication number: 20170180178
    Abstract: Apparatuses, systems, ambient RF backscatter transceivers, and methods for communicating using MIMO and spread spectrum coding of backscattered ambient RF signals are described. An example system may include an ambient RF backscatter transceiver that include an antenna configured to receive a backscattered ambient radio frequency (RF) signal, and a receiver coupled to the antenna. The receiver may be configured to demodulate the backscattered ambient RF signal using one of multiple input, multiple output multiplexing demodulation or spread spectrum code demodulation to retrieve the first data. The backscattered ambient RF signal may be generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal may be configured to provide other data at a second frequency.
    Type: Application
    Filed: February 11, 2015
    Publication date: June 22, 2017
    Applicant: UNIVERSITY OF WASHINGTON
    Inventors: SHYAMNATH GOLLAKOTA, Joshua R. Smith, Aaron N. Parks, Angli Liu
  • Publication number: 20170180075
    Abstract: Example devices described herein include endpoint devices which may communicate with an access point device by modulating a channel associated with the wireless communication to encode transmit data. The channel modulation may be performed by utilizing a switch to control an impedance of an antenna at the endpoint device to either reflect or absorb wireless network communication signals received by the endpoint device. The access point device may extract the transmit data by decoding changes in the channel caused, at least in part, by the modulation. Access point devices may transmit a pattern of packets—the presence or absence of which may correspond with transmit data. Endpoint devices may decode this data by using an energy detector to differentiate between the presence or absence of a packet.
    Type: Application
    Filed: February 11, 2015
    Publication date: June 22, 2017
    Applicant: UNIVERSITY OF WASHINGTON
    Inventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
  • Patent number: 9680520
    Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: June 13, 2017
    Assignee: University of Washington Through Its Center For Commercialization
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
  • Publication number: 20160301257
    Abstract: Examples described herein include systems and methods for multiband harvesting. An example system may include a single wideband antenna followed by several narrowband rectifier chains. Each rectifier chain may include a bandpass filter, a tuned impedance matching network, and a rectifier. The outputs of the rectifiers may be combined using a summation network. The summation network, which may be a diode summation network, may in some examples provide good performance even when only a subset o the narrowband harvesters (e.g. a subset of the rectifier chains) is excited.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 13, 2016
    Applicant: UNIVERSITY OF WASHINGTON
    Inventors: AARON N. PARKS, Joshua R. Smith
  • Publication number: 20150311944
    Abstract: Apparatuses, systems, ambient backscatter transceivers, and methods for modulating a backscatter of an ambient RF signal are described. An example system may include an ambient backscatter transceiver comprising an antenna that is configured to receive a backscattered ambient radio frequency (RF) signal. The ambient backscatter transceiver is configured to demodulate the backscattered ambient RF signal to retrieve first data. The backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency. The ambient RF signal is encoded with modulated to provide second data at a second frequency.
    Type: Application
    Filed: July 9, 2015
    Publication date: October 29, 2015
    Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla