Patents by Inventor Ahmadreza Rofougaran

Ahmadreza Rofougaran 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: 11394128
    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: July 19, 2022
    Assignee: SILICON VALLEY BANK
    Inventors: Ahmadreza Rofougaran, Farid Shirinfar, Sam Gharavi, Michael Boers, Seunghwan Yoon, Alfred Grau Besoli, Maryam Rofougaran
  • Publication number: 20220216831
    Abstract: A circuit includes a transformer having a primary coil coupled to a first power amplifier (PA) and a second PA, and a secondary coil. The secondary coil supplies a current to an antenna based on a first direction of a first phase of a first amplified constant-envelope signal in the primary coil with respect to a second phase of a second amplified constant-envelope signal in the primary coil. The circuit further includes load impedance coupled between a median point of the primary coil and ground. The load impedance is adjusted to match one of an impedance of the differential antenna, an impedance of the first PA, and an impedance of the second PA, based on the ripples detected by the ripple detector.
    Type: Application
    Filed: March 22, 2022
    Publication date: July 7, 2022
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran, Sam Gharavi
  • Patent number: 11381301
    Abstract: An integrated repeater system that includes a repeater device having phased array antenna receivers that receives a mmWave radio frequency signal from a base station, and one or more phased array antenna transmitters that transmits the received mmWave radio frequency signal through a glass structure to a user equipment with a first level of transmission loss. Based on an impedance matching component provided in the integrated repeater system, the repeater device changes a filter response of the glass structure based on a dielectric property of the impedance matching component.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: July 5, 2022
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Alfred Grau Besoli
  • 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: 11337140
    Abstract: A communication device that establishes a short-range wireless communication link with a fixed wireless access (FWA) user equipment (UE) or a mobile UE that is in a specified proximal range of the communication device. The FWA UE or the mobile UE is in a radio resource control (RRC) connected state over LTE network, is determined. The communication device detects whether a first new radio (NR) carrier is assigned to the FWA UE or the mobile UE without using the communication device. A carrier measurement is determined for NR is established at the FWA UE (or mobile UE) by an LTE-enabled base station in the RRC connected state. The communication device controls assignment of a second NR carrier to the FWA UE or the mobile UE for non-standalone initial access to a beam of RF data signals in the second NR carrier at the FWA UE or the mobile UE.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 17, 2022
    Assignee: SILICON VALLEY BANK
    Inventors: Ahmadreza Rofougaran, Sam Gharavi, Maryam 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
  • Patent number: 11309840
    Abstract: A circuit includes a transformer having a primary coil coupled to a first power amplifier (PA) and a second PA, and a secondary coil. The secondary coil supplies a current to an antenna based on a first direction of a first phase of a first amplified constant-envelope signal in the primary coil with respect to a second phase of a second amplified constant-envelope signal in the primary coil. The circuit further includes load impedance coupled between a median point of the primary coil and ground. The load impedance dissipates the current based on a second direction of the first phase of the first amplified constant-envelope signal in the primary coil with respect to the second phase of the second amplified constant-envelope signal in the primary coil, which results in improved power efficiency.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: April 19, 2022
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran, Sam Gharavi
  • 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
  • Publication number: 20220069896
    Abstract: A repeater device includes a first antenna array having a plurality of antenna configuration modes, where each mode defines a unique configuration of one or more sub-arrays of a plurality of different sub-arrays of the first antenna array. The repeater device further includes control circuitry configured to select one of the plurality of antenna configuration modes. A first configuration of one or more sub-arrays of the first antenna array is activated based on the selected antenna configuration mode and a beam of radio frequency (RF) signal is directed to UE from the activated first configuration of the one or more sub-arrays. The beam of RF signal is directed to the UE present in first or second communication range such that one or more signal path parameters of the beam of RF signal are substantially equalized at the first and the second communication range.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Alfred Grau Besoli, Ahmadreza Rofougaran, Brima Ibrahim, Farid SHIRINFAR, Maryam ROFOUGARAN, Nemat Dolatsha, Yifan Wang
  • Publication number: 20220029663
    Abstract: A communication device includes a donor receiver that receives a first beam of input radio frequency (RF) signals from a base station or a network node. The communication device further includes a service transmitter that transmits a second beam of RF signals in a first radiation pattern to a user equipment (UE). The communication device further includes control circuitry that detects an amount and a direction of echo signals at the donor receiver. The control circuitry applies polarization to the second beam of RF signals transmitted to the UE and calibrates the polarization to minimize the echo signals at the donor receiver. A second radiation pattern is generated for the second beam of RF signals and communicated to the UE based on the calibrated polarization. The communication of the second beam of RF signals in the generated second radiation pattern further reduces the echo signals at the donor receiver.
    Type: Application
    Filed: October 8, 2021
    Publication date: January 27, 2022
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran, Sam Gharavi, Qiyue "Jack" Zou, Alan Wang, Farid Shirinfar, Mike Boers
  • Publication number: 20220026990
    Abstract: An assistive device and method for non-visually discerning a three dimensional (3D) real-world area surrounding a user, comprises a haptic feedback interface. The assistive device receives input to select a mode in the assistive device and based on the selected mode, determines each of a plurality of objects within a first proximity range of the assistive device as a relevant object or a non-relevant object to obtain a set of relevant objects and a set of non-relevant objects. The assistive device determines a scaling factor based on the first proximity range and the selected mode, and further adjusts sizes of the set of relevant objects to map the set of relevant objects with a set of haptic elements of the haptic feedback interface. The assistive device generates touch-discernible feedback on the haptic feedback interface to enable the user to non-visually discern the 3D real-world area surrounding the user.
    Type: Application
    Filed: October 7, 2021
    Publication date: January 27, 2022
    Inventors: Niki Mani, Alex Hamid Mani, Ahmadreza ROFOUGARAN
  • Publication number: 20210409101
    Abstract: A system includes control circuitry that obtains radar data from each repeater device of a network of repeater devices. A plurality of signal propagation indicators is determined, and a three-dimensional representation of a geographical area is generated based on the obtained radar data and plurality of signal propagation indicators. A location and movement of a plurality of user devices in the geographical area is tracked and a beamforming scheme is selected for one or more repeater devices of the network of repeater devices. An out-of-band control of operations of the network of repeater devices is executed based on the generated three-dimensional representation, the selected beamforming scheme for the one or more repeater devices, and the tracked location and movement of the plurality of user devices in the geographical area, for example, to achieve high dates, less interference, and increased signal strength and gain.
    Type: Application
    Filed: August 23, 2021
    Publication date: December 30, 2021
    Inventors: Ahmadreza ROFOUGARAN, Arman ROFOUGARAN, Alireza Tarighat MEHRABANI
  • Publication number: 20210399767
    Abstract: A communication device includes a donor receiver that receives a plurality of first beam of input radio frequency (RF) signals. The communication device further includes a service transmitter that transmits a plurality of second beam of RF signals in a first radiation pattern to a user equipment (UE). The communication device further includes control circuitry that detects an amount and a direction of reflected RF signals at the donor receiver. The control circuitry applies polarization to the plurality of second beam of RF signals and calibrates the polarization to minimize the reflected RF signals at the donor receiver. A second radiation pattern is generated for the plurality of second beam of RF signals and communicated to the UE based on the calibrated polarization.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 23, 2021
    Inventors: Ahmadreza ROFOUGARAN, Maryam ROFOUGARAN, Sam GHARAVI, Qiyue "Jack" ZOU, Alan WANG, Farid SHIRINFAR, Mike BOERS
  • 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: 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: 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
  • Patent number: 11177872
    Abstract: A system includes control circuitry that obtains surrounding environment scan information from each repeater device of a network of repeater devices. A plurality of signal propagation indicators is determined, and a three-dimensional representation of a geographical area is generated based on the obtained surrounding environment scan information and plurality of signal propagation indicators. A location and movement of a plurality of user devices in the geographical area is tracked and a beamforming scheme is selected for one or more repeater devices of the network of repeater devices. An out-of-band control of operations of the network of repeater devices is executed based on the generated three-dimensional representation, the selected beamforming scheme for the one or more repeater devices, and the tracked location and movement of the plurality of user devices in the geographical area, for example, to achieve high dates, less interference, and increased signal strength and gain.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: November 16, 2021
    Assignee: AR & NS Investment, LLC
    Inventors: Ahmadreza Rofougaran, Arman Rofougaran, Alireza Tarighat Mehrabani
  • 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