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).
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Patent number: 10587445Abstract: 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: GrantFiled: December 7, 2018Date of Patent: March 10, 2020Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
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Patent number: 10547484Abstract: 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: GrantFiled: December 7, 2018Date of Patent: January 28, 2020Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
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Patent number: 10447331Abstract: 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: GrantFiled: July 24, 2018Date of Patent: October 15, 2019Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
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Patent number: 10382161Abstract: 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: GrantFiled: February 11, 2015Date of Patent: August 13, 2019Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
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Patent number: 10270639Abstract: 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: GrantFiled: April 20, 2018Date of Patent: April 23, 2019Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
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Publication number: 20190116078Abstract: 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: ApplicationFiled: December 7, 2018Publication date: April 18, 2019Applicant: UNIVERSITY OF WASHINGTONInventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
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Patent number: 10187241Abstract: 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: GrantFiled: April 20, 2018Date of Patent: January 22, 2019Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
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Patent number: 10187177Abstract: 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: GrantFiled: February 11, 2015Date of Patent: January 22, 2019Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
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Publication number: 20180358996Abstract: 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: ApplicationFiled: July 24, 2018Publication date: December 13, 2018Applicant: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
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Publication number: 20180241604Abstract: 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: ApplicationFiled: April 20, 2018Publication date: August 23, 2018Applicant: UNIVERSITY OF WASHINGTONInventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
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Patent number: 10033424Abstract: 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: GrantFiled: May 22, 2017Date of Patent: July 24, 2018Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
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Patent number: 9979240Abstract: 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: GrantFiled: April 7, 2016Date of Patent: May 22, 2018Assignee: University of WashingtonInventors: Aaron N. Parks, Joshua R. Smith
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Patent number: 9973367Abstract: 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: GrantFiled: February 11, 2015Date of Patent: May 15, 2018Assignee: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Aaron N. Parks, Angli Liu
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Publication number: 20170331509Abstract: 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: ApplicationFiled: May 22, 2017Publication date: November 16, 2017Applicant: University of WashingtonInventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
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Publication number: 20170180178Abstract: 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: ApplicationFiled: February 11, 2015Publication date: June 22, 2017Applicant: UNIVERSITY OF WASHINGTONInventors: SHYAMNATH GOLLAKOTA, Joshua R. Smith, Aaron N. Parks, Angli Liu
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Publication number: 20170180075Abstract: 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: ApplicationFiled: February 11, 2015Publication date: June 22, 2017Applicant: UNIVERSITY OF WASHINGTONInventors: Shyamnath Gollakota, Joshua R. Smith, David Wetherall, Bryce Kellogg, Aaron N. Parks
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Patent number: 9680520Abstract: 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: GrantFiled: July 9, 2015Date of Patent: June 13, 2017Assignee: University of Washington Through Its Center For CommercializationInventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla
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Publication number: 20160301257Abstract: 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: ApplicationFiled: April 7, 2016Publication date: October 13, 2016Applicant: UNIVERSITY OF WASHINGTONInventors: AARON N. PARKS, Joshua R. Smith
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Publication number: 20150311944Abstract: 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: ApplicationFiled: July 9, 2015Publication date: October 29, 2015Inventors: Shyamnath Gollakota, Joshua R. Smith, Vincent Liu, Aaron N. Parks, Vamsi Talla