Patents by Inventor Seunghwan Yoon

Seunghwan Yoon 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: 11362439
    Abstract: A wireless communications system includes a first transceiver with a first phased array antenna panel having horizontal-polarization receive antennas and vertical-polarization transmit antennas, where the horizontal-polarization receive antennas form a first receive beam based on receive phase and receive amplitude information provided by a first master chip, the vertical-polarization transmit antennas form a first transmit beam based on transmit phase and transmit amplitude information provided by the first master chip.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: June 14, 2022
    Assignee: SILICON VALLEY BANK
    Inventors: Ahmadreza Rofougaran, Farid Shirinfar, Sam Gharavi, Michael Boers, Seunghwan Yoon, Alfred Grau Besoli, Maryam Rofougaran
  • Patent number: 11342968
    Abstract: A system, in a radio frequency (RF) transmitter device, dynamically selects one or more reflector devices along a non-line-of-sight (NLOS) radio path based on a defined criteria. Further, the dynamically selected one or more reflector devices are controlled based on one or more conditions. In an RF receiver device, communicates with the dynamically selected one or more reflector devices comprising an active reflector device. The active reflector device comprises at least a first antenna array and a second antenna array. The first antenna array transmits a first set of beams of RF signals to at least the RF transmitter device and the RF receiver device. The second antenna array receives a second set of beams of RF signals from at least the RF transmitter device and the RF receiver device.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: May 24, 2022
    Assignee: Movandi Corporation
    Inventors: Seunghwan Yoon, Ahmadreza Rofougaran
  • Patent number: 11309939
    Abstract: A system, in a radio frequency (RF) transmitter device, dynamically selects one or more reflector devices along a non-line-of-sight (NLOS) radio path based on a defined criteria. Further, the dynamically selected one or more reflector devices are controlled based on one or more conditions. In an RF receiver device, communicates with the dynamically selected one or more reflector devices comprising an active reflector device. The active reflector device comprises at least a first antenna array and a second antenna array. The first antenna array transmits a first set of beams of RF signals to at least the RF transmitter device and the RF receiver device. The second antenna array receives a second set of beams of RF signals from at least the RF transmitter device and the RF receiver device.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: April 19, 2022
    Assignee: Movandi Corporation
    Inventors: Seunghwan Yoon, Ahmadreza Rofougaran
  • Publication number: 20220085851
    Abstract: A system, in a radio frequency (RF) transmitter device, selects one or more reflector devices that comprises an active reflector device, along an optimized non-line-of-sight (NLOS) radio path based on a defined criteria. Further, the selected one or more reflector devices are controlled based on one or more conditions. The optimized NLOS radio path is determined from a plurality of NLOS radio paths. In an RF receiver device that communicates with the selected one or more reflector devices using the determined optimized NLOS path. The active reflector device comprises at least a first antenna array and a second antenna array. The first antenna array transmits a first set of beams of RF signals to at least the RF transmitter device and the RF receiver device. The second antenna array receives a second set of beams of RF signals from at least the RF transmitter device and the RF receiver device.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Inventors: Seunghwan YOON, Ahmadreza ROFOUGARAN
  • Patent number: 11271614
    Abstract: A system, in a radio frequency (RF) transmitter device, dynamically selects one or more reflector devices along a non-line-of-sight (NLOS) radio path based on a defined criteria. Further, the dynamically selected one or more reflector devices are controlled based on one or more conditions. In an RF receiver device, communicates with the dynamically selected one or more reflector devices comprising an active reflector device. The active reflector device comprises at least a first antenna array and a second antenna array. The first antenna array transmits a first set of beams of RF signals to at least the RF transmitter device and the RF receiver device. The second antenna array receives a second set of beams of RF signals from at least the RF transmitter device and the RF receiver device.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: March 8, 2022
    Assignee: Movandi Corporation
    Inventors: Seunghwan Yoon, Ahmadreza Rofougaran
  • Patent number: 11205855
    Abstract: A communication device includes a first lens and a feeder array. The first lens has a defined shape, a base, a first tubular membrane connected to the base, and a second membrane arranged as a cap on the first tubular membrane. The feeder array includes a plurality of antenna elements that are positioned in a specified proximal distance from the base of the first lens to receive a first lens-guided beam of input radio frequency (RF) signals through the second membrane of the first lens. The first lens of the defined shape covers the feeder array as a radome enclosure. A distribution of a gain from the received first lens-guided beam of input RF signals is substantially equalized across the feeder array to increase at least a reception sensitivity of the plurality of antenna elements of the feeder array.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: December 21, 2021
    Assignee: SILICON VALLEY BANK
    Inventors: Ahmadreza Rofougaran, Alfred Grau Besoli, Seunghwan Yoon, Farid Shirinfar, Sam Gharavi, Michael Boers, Maryam Rofougaran, Enver Adas, Kartik Sridharan
  • Publication number: 20210384640
    Abstract: A communication device includes a lens having a defined shape. A feeder array comprising a plurality of antenna elements that are positioned in a specified proximal distance from the lens to receive a lens-guided beam of input radio frequency (RF) signals through the lens. The specified proximal distance is less than a focal length of the lens. The lens covers the feeder array as a radome enclosure. A distribution of a gain from the received lens-guided beam of input RF signals is substantially equalized from a radiation surplus region to a radiation deficient region of the feeder array to increase at least a reception sensitivity of the plurality of antenna elements for at least the lens-guided beam of input RF signals, based on the defined shape of the lens and the specified proximal distance of the feeder array to the lens.
    Type: Application
    Filed: August 23, 2021
    Publication date: December 9, 2021
    Inventors: Ahmadreza ROFOUGARAN, Alfred Grau Besoli, Seunghwan YOON, Farid SHIRINFAR, Sam GHARAVI, Michael BOERS, Maryam ROFOUGARAN, Enver Adas, Kartik SRIDHARAN
  • Publication number: 20210384639
    Abstract: A communication device includes a system board that includes a plurality of chips. Each chip in plurality of chips includes a plurality of antennas. A system cover coupled to system board includes a plurality of lenses. Each lens is configured to cover an antenna of plurality of antennas as a radome enclosure. Each lens includes a base, and a first tubular membrane coupled to base. A second membrane coupled to first tubular membrane. First tubular membrane and Second membrane cause the lens to have a bell shape. A support structure coupled to first tubular membrane. Support structure facilitates coupling of plurality of lenses to system cover. Each chip comprises a feeder array that further comprises a plurality of antenna elements that are positioned at a proximal distance from base of a lens, A distribution of a gain of input RF signals is substantially equalized across plurality of antenna elements.
    Type: Application
    Filed: August 23, 2021
    Publication date: December 9, 2021
    Inventors: Ahmadreza ROFOUGARAN, Alfred Grau Besoli, Seunghwan YOON, Farid SHIRINFAR, Sam GHARAVI, Michael BOERS, Maryam ROFOUGARAN, Enver Adas, Kartik SRIDHARAN
  • Publication number: 20210351516
    Abstract: A communication device includes a first lens, a feeder array, and control circuitry communicatively coupled to the feeder array. The first lens is associated with a defined shape, which further exhibits a defined distribution of dielectric constant. The feeder array includes a plurality of antenna elements that are positioned in proximity to the first lens. The control circuitry equalizes a distribution of a gain from the received first lens-guided beam of input RF signals across the feeder array and different scan directions of the plurality of antenna elements. The equalized distribution of gain is based on the defined distribution of dielectric constant within the first lens and the proximity of the feeder array to the first lens.
    Type: Application
    Filed: July 22, 2021
    Publication date: November 11, 2021
    Applicant: Movandi Corporation
    Inventors: Ahmadreza ROFOUGARAN, Alfred Grau Besoli, Seunghwan YOON, Farid SHIRINFAR, Sam GHARAVI, Michael BOERS, Maryam ROFOUGARAN, Enver Adas, Kartik Sridharan
  • Patent number: 11171426
    Abstract: A communication device includes a first lens and a feeder array. The first lens has a defined shape, a base, a first tubular membrane connected to the base, and a second membrane arranged as a cap on the first tubular membrane. The feeder array includes a plurality of antenna elements that are positioned in a specified proximal distance from the base of the first lens to receive a first lens-guided beam of input radio frequency (RF) signals through the second membrane of the first lens. The first lens of the defined shape covers the feeder array as a radome enclosure. A distribution of a gain from the received first lens-guided beam of input RF signals is substantially equalized across the feeder array to increase at least a reception sensitivity of the plurality of antenna elements of the feeder array.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: November 9, 2021
    Assignee: SILICON VALLEY BANK
    Inventors: Ahmadreza Rofougaran, Alfred Grau Besoli, Seunghwan Yoon, Farid Shirinfar, Sam Gharavi, Michael Boers, Maryam Rofougaran, Enver Adas, Kartik Sridharan
  • Publication number: 20210336347
    Abstract: An antenna system includes a first substrate, a plurality of chips and a waveguide antenna element based beam forming phased array that includes a plurality of radiating waveguide antenna cells for millimeter wave communication. Each radiating waveguide antenna cell includes a plurality of pins where a first pin is connected with a body of a corresponding radiating waveguide antenna cell and the body corresponds to ground for the pins. The first pin includes a first and a second current path, the first current path being longer than the second current path. A first end of the radiating waveguide antenna cells is mounted on the first substrate, where the plurality of chips are electrically connected with the plurality of pins and the ground of each of the plurality of radiating waveguide antenna cells.
    Type: Application
    Filed: May 25, 2021
    Publication date: October 28, 2021
    Inventors: Seunghwan YOON, Ahmadreza ROFOUGARAN, Sam GHARAVI, Kartik SRIDHARAN, Donghyup SHIN, Farid SHIRINFAR, Stephen WU, Maryam ROFOUGARAN, Alfred Grau Besoli, Enver Adas
  • Publication number: 20210328363
    Abstract: An antenna system, includes a first substrate, a plurality of chips, and a waveguide antenna element based beam forming phased array. The waveguide antenna element based beam forming phased array includes a plurality of radiating waveguide antenna cells. Each radiating waveguide antenna cell includes a plurality of pins that are connected to ground. A body of each radiating waveguide antenna cell corresponds to the ground. The plurality of chips are electrically connected with the plurality of pins and the ground of each of the plurality of radiating waveguide antenna cells to control beamforming through a second end of the plurality of radiating waveguide antenna cells.
    Type: Application
    Filed: July 1, 2021
    Publication date: October 21, 2021
    Inventors: Seunghwan YOON, Ahmadreza ROFOUGARAN, Sam GHARAVI, Kartik SRIDHARAN, Donghyup SHIN, Farid SHIRINFAR, Stephen WU, Maryam ROFOUGARAN, Alfred Grau Besoli, Enver Adas, Zhihui WANG
  • Patent number: 11145986
    Abstract: A communication device includes a first lens, a feeder array, and control circuitry communicatively coupled to the feeder array. The first lens is associated with a defined shape, which further exhibits a defined distribution of dielectric constant. The feeder array includes a plurality of antenna elements that are positioned in proximity to the first lens. The control circuitry equalizes a distribution of a gain from the received first lens-guided beam of input RF signals across the feeder array and different scan directions of the plurality of antenna elements. The equalized distribution of gain is based on the defined distribution of dielectric constant within the first lens and the proximity of the feeder array to the first lens.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 12, 2021
    Assignee: SILICON VALLEY BANK
    Inventors: Ahmadreza Rofougaran, Alfred Grau Besoli, Seunghwan Yoon, Farid Shirinfar, Sam Gharavi, Michael Boers, Maryam Rofougaran, Enver Adas, Kartik Sridharan
  • Publication number: 20210288713
    Abstract: An active repeater device includes a primary sector and at least a secondary sector communicatively coupled to the primary sector receives or transmits a first beam of input RF signals having a first beam pattern from or to a base station, respectively. The primary sector includes an baseband signal processor and a first radio head (RH) unit. The secondary sector comprises a second RH unit. The first beam pattern covers a first geographical area. Beamforming coefficients are generated to convert the first beam pattern of the first beam of input RF signals to a second beam pattern. A second beam of output RF signals in the second beam pattern is transmitted from or received by, respectively, the secondary sector to or from, respectively, a plurality of user equipment (UEs) based on the generated beamforming coefficients and the received first beam of input RF signals.
    Type: Application
    Filed: June 3, 2021
    Publication date: September 16, 2021
    Inventors: Sam GHARAVI, Ahmadreza ROFOUGARAN, Michael BOERS, Seunghwan YOON, Kartik SRIDHARAN, Donghyup SHIN, Farid SHIRINFAR, Stephen WU, Maryam ROFOUGARAN
  • Patent number: 11109243
    Abstract: A system, in an active reflector device, adjusts a first amplification gain of each of a plurality of radio frequency (RF) signals received at a receiver front-end from a first equipment via a first radio path of an NLOS radio path. A first phase shift is performed on each of the plurality of RF signals with the adjusted first amplification gain. A combination of the plurality of first phase-shifted RF signals is split at a transmitter front-end. A second phase shift on each of the split first plurality of first phase-shifted RF signals is performed. A second amplification gain of each of the plurality of second phase-shifted RF signals is adjusted.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: August 31, 2021
    Assignee: SILICON VALLEY BANK
    Inventors: Ahmadreza Rofougaran, Sam Gharavi, Kartik Sridharan, Michael Boers, Seunghwan Yoon, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11108167
    Abstract: An antenna system, includes a first substrate, a plurality of chips, and a waveguide antenna element based beam forming phased array. The waveguide antenna element based beam forming phased array has a unitary body that comprises a plurality of radiating waveguide antenna cells in a first layout for millimeter wave communication. Each radiating waveguide antenna cell comprises a plurality of pins that are connected with a body of a corresponding radiating waveguide antenna cell that acts as ground for the plurality of pins. A first end of the plurality of radiating waveguide antenna cells of the waveguide antenna element based beam forming phased array, as the unitary body, in the first layout is mounted on the first substrate. The plurality of chips are electrically connected with the plurality of pins and the ground of each of the plurality of radiating waveguide antenna cells to control beamforming.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: August 31, 2021
    Assignee: SILICON VALLEY BANK
    Inventors: Seunghwan Yoon, Ahmadreza Rofougaran, Sam Gharavi, Kartik Sridharan, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran, Alfred Grau Besoli, Enver Adas, Zhihui Wang
  • Publication number: 20210250782
    Abstract: A system, in an active reflector device, adjusts a first amplification gain of each of a plurality of radio frequency (RF) signals received at a receiver front-end from a first equipment via a first radio path of an NLOS radio path. A first phase shift is performed on each of the plurality of RF signals with the adjusted first amplification gain. A combination of the plurality of first phase-shifted RF signals is split at a transmitter front-end. A second phase shift on each of the split first plurality of first phase-shifted RF signals is performed. The plurality of RF signals as a directed beam is transmitted to a second equipment via a second radio path of the NLOS radio path.
    Type: Application
    Filed: April 29, 2021
    Publication date: August 12, 2021
    Inventors: Ahmadreza Rofougaran, Sam Gharavi, Kartik Sridharan, Michael Boers, Seunghwan Yoon, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11088457
    Abstract: An antenna system includes a first substrate, a plurality of chips and a waveguide antenna element based beam forming phased array that includes a plurality of radiating waveguide antenna cells for millimeter wave communication. Each radiating waveguide antenna cell includes a plurality of pins where a first pin is connected with a body of a corresponding radiating waveguide antenna cell and the body corresponds to ground for the pins. The first pin includes a first and a second current path, the first current path being longer than the second current path. A first end of the radiating waveguide antenna cells is mounted on the first substrate, where the plurality of chips are electrically connected with the plurality of pins and the ground of each of the plurality of radiating waveguide antenna cells to control beamforming through a second end of the plurality of radiating waveguide antenna cells for the communication.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: August 10, 2021
    Assignee: SILICON VALLEY BANK
    Inventors: Seunghwan Yoon, Ahmadreza Rofougaran, Sam Gharavi, Kartik Sridharan, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran, Alfred Grau Besoli, Enver Adas
  • Patent number: 11088756
    Abstract: An active repeater device includes a primary sector and at least a secondary sector communicatively coupled to the primary sector receives or transmits a first beam of input RF signals having a first beam pattern from or to a base station, respectively. The primary sector includes an baseband signal processor and a first radio head (RH) unit. The secondary sector comprises a second RH unit. The first beam pattern covers a first geographical area. Beamforming coefficients are generated to convert the first beam pattern of the first beam of input RF signals to a second beam pattern. A second beam of output RF signals in the second beam pattern is transmitted from or received by, respectively, the secondary sector to or from, respectively, a plurality of user equipment (UEs) based on the generated beamforming coefficients and the received first beam of input RF signals.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 10, 2021
    Assignee: SILICON VALLEY BANK
    Inventors: Sam Gharavi, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Kartik Sridharan, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11082123
    Abstract: An active repeater device including a first antenna array, a controller, and one or more secondary sectors receives or transmits a first beam of input RF signals from or to, respectively, a first base station operated by a first service provider and a second beam of input RF signals from or to, respectively, a second base station operated by a second service provider. A controller assigns a first beam setting to a first group of customer premises equipment (CPEs) and a second beam setting to a second group of CPEs, based on one or more corresponding signal parameters associated with the each corresponding group of CPEs. A second antenna array of the second RH unit concurrently transmits or received a first beam of output RF signals to or from the first group of CPEs and a second beam of output RF signals to the second group of CPEs.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: August 3, 2021
    Assignee: SILICON VALLEY BANK
    Inventors: Sam Gharavi, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Kartik Sridharan, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran