Patents by Inventor Sam Gharavi

Sam Gharavi 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: 12368244
    Abstract: A method in a communication device that includes a system board having a plurality of chips is described. The method includes receiving a lens-guided beam of input radio frequency (RF) signals through a lens, where each chip of the plurality of chip comprises a plurality of antennas, the lens covers a chip of the plurality of chips, adjusting a proximal distance between the lens and the chip such that the proximal distance is less than a focal length of the lens, and substantially equalizing a distribution of a gain from the received lens-guided beam of the input RF signals from a radiation surplus region to a radiation deficient region based on a defined shape of the lens and the proximal distance.
    Type: Grant
    Filed: May 22, 2023
    Date of Patent: July 22, 2025
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Alfred Grau Besoli, Seunghwan Yoon, Farid Shirinfar, Sam Gharavi, Michael Boers, Maryam Rofougaran, Enver Adas, Kartik Sridharan
  • Patent number: 12368497
    Abstract: A repeater device for New Radio (NR) communication, includes a baseband processor that establishes a communication link with a base station and decodes control information that is received from the base station through a control channel. The baseband processor further aligns a timing reference of the repeater device with that of an NR cell frame for an uplink or a downlink time division duplex (TDD) switching, based on the decoded control information. The baseband processor further selects and forms one or more donor beams of RF signals at a donor side of the repeater device and one or more service beams of RF signals at a service side of the repeater device, based on the decoded control information and the aligned timing reference with that of the NR cell frame for the uplink or the downlink TDD switching for communication in an NR frequency band.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: July 22, 2025
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Brima Ibrahim, Raghu Mulagada, Walid Nabhane, Mohsen Pourkhaatoun, Wan-Jong Kim, Maryam Rofougaran, Sam Gharavi
  • Patent number: 12362798
    Abstract: A system including a plurality of circuits in a first radio frequency (RF) device which are configured to control a plurality of reflector devices based on a set of criteria. The controlled plurality of reflector devices transmit a plurality of RF signals in a specified direction and a specified location of a second RF device within transmission range of the controlled plurality of reflector devices. The plurality of RF signals are transmitted in the specified direction and the specified location of a second RF device based on a request for signal cancellation. The request for the signal cancellation is based on a noise from the second RF device and the plurality of RF signals are cancelled in the specified direction and the specified location of the second RF device.
    Type: Grant
    Filed: February 27, 2023
    Date of Patent: July 15, 2025
    Assignee: Movandi Corporation
    Inventors: Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 12237580
    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 board 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 is coupled to the first tubular membrane. A support structure is coupled to the first tubular membrane. The support structure facilitates coupling of plurality of lenses to system board cover. The system board cover includes a feeder array that includes a plurality of antenna elements that are positioned at a proximal distance from base of a lens and the proximal distance of the system board from the base of the lens is less than a focal length of the lens.
    Type: Grant
    Filed: May 22, 2023
    Date of Patent: February 25, 2025
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Alfred Grau Besoli, Seunghwan Yoon, Farid Shirinfar, Sam Gharavi, Michael Boers, Maryam Rofougaran, Enver Adas, Kartik Sridharan
  • Patent number: 12160044
    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: May 31, 2023
    Date of Patent: December 3, 2024
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Farid Shirinfar, Sam Gharavi, Michael Boers, Seunghwan Yoon, Alfred Grau Besoli, Maryam Rofougaran
  • Patent number: 12155113
    Abstract: A phased array antenna panel includes a first plurality of antennas, a first radio frequency (RF) front end chip, a second plurality of antennas, a second RF front end chip, and a combiner RF chip. The first and second RF front end chips receive respective first and second input signals from the first and second pluralities of antennas, and produce respective first and second output signals based on the respective first and second input signals. The combiner RF chip can receive the first and second output signals and produce a power combined output signal that is a combination of powers of the first and second output signals. Alternatively, a power combiner can receive the first and second output signals and produce a power combined output signal, and the combiner RF chip can receive the power combined output signal.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: November 26, 2024
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Seunghwan Yoon, Alfred Grau Besoli, Farid Shirinfar, Sam Gharavi, Michael Boers, Maryam Rofougaran
  • Patent number: 12149001
    Abstract: A wireless communication device includes reconfigurable receive transmit antennas having horizontal-polarization antennas and vertical-polarization antennas, where the horizontal-polarization antennas receive or transmit horizontally-polarized signal for a first period of time, where the vertical-polarization antennas transmit or receive vertically-polarized signal for a second period of time, where the horizontal-polarization receive antennas form a receive beam based on receive phase and receive amplitude information provided by a master chip, and where the vertical-polarization transmit antennas form a transmit beam based on transmit phase and transmit amplitude information provided by the master chip.
    Type: Grant
    Filed: September 6, 2022
    Date of Patent: November 19, 2024
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Farid Shirinfar, Sam Gharavi, Michael Boers, Seunghwan Yoon, Alfred Grau Besoli, Maryam Rofougaran
  • Patent number: 12126073
    Abstract: A phased array antenna panel includes a first plurality of antennas, a first radio frequency (RF) front end chip, a second plurality of antennas, a second RF front end chip, and a combiner RF chip. The first and second RF front end chips receive respective first and second input signals from the first and second pluralities of antennas, and produce respective first and second output signals based on the respective first and second input signals. The combiner RF chip can receive the first and second output signals and produce a power combined output signal that is a combination of powers of the first and second output signals. Alternatively, a power combiner can receive the first and second output signals and produce a power combined output signal, and the combiner RF chip can receive the power combined output signal.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: October 22, 2024
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Seunghwan Yoon, Alfred Grau Besoli, Farid Shirinfar, Sam Gharavi, Michael Boers, Maryam Rofougaran
  • Patent number: 12095164
    Abstract: An apparatus includes a plurality of antenna modules and a printed circuit board (PCB) having a plurality of holes embedded with a heat sink. Each antenna module includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells mounted on a first surface of the antenna substrate, and a plurality of packaged circuitry mounted on a second surface of the antenna substrate. The plurality of packaged circuitry are electrically connected with the plurality of 3-D antenna cells. Each of the plurality of antenna modules is mounted on a plurality of portions of the heat sink such that a corresponding packaged circuitry of the plurality of packaged circuitry is in a direct contact with the plurality of portions of the heat sink embedded within the plurality of holes.
    Type: Grant
    Filed: August 30, 2022
    Date of Patent: September 17, 2024
    Assignee: MOVANDI CORPORATION
    Inventors: Seunghwan Yoon, Franco De Flaviis, Alfred Grau Besoli, Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 12095165
    Abstract: An antenna module that includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells on a first surface of the antenna substrate, a plurality of packaged circuitry on a second surface of the antenna substrate, and a plurality of supporting balls mounted on the second surface of the antenna substrate. The plurality of packaged circuitry includes a plurality of radio-frequency (RF) chips on the second surface of the antenna substrate. Each of the plurality of 3-D antenna cells comprises a raised antenna patch with a plurality of projections and a plurality of supporting legs, where at least a relief cut is provided between one of the plurality of projections and one of the plurality of supporting legs.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: September 17, 2024
    Assignee: Movandi Corporation
    Inventors: Seunghwan Yoon, Zhihui Wang, Franco De Flaviis, Alfred Grau Besoli, Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 12046820
    Abstract: An antenna module that includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells on a first surface of the antenna substrate, a plurality of packaged circuitry on a second surface of the antenna substrate, and a plurality of supporting balls mounted on the second surface of the antenna substrate. The plurality of packaged circuitry includes a plurality of radio-frequency (RF) chips on the second surface of the antenna substrate. Each of the plurality of 3-D antenna cells comprises a raised antenna patch with a plurality of projections and a plurality of supporting legs, where at least a relief cut is provided between one of the plurality of projections and one of the plurality of supporting legs.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: July 23, 2024
    Assignee: Movandi Corporation
    Inventors: Seunghwan Yoon, Zhihui Wang, Franco De Flaviis, Alfred Grau Besoli, Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 12003029
    Abstract: An antenna module that includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells on a first surface of the antenna substrate, a plurality of packaged circuitry on a second surface of the antenna substrate, and a plurality of supporting balls mounted on the second surface of the antenna substrate. The plurality of packaged circuitry includes a plurality of radio-frequency (RF) chips on the second surface of the antenna substrate. Each of the plurality of 3-D antenna cells comprises a raised antenna patch with a plurality of projections and a plurality of supporting legs, where at least a relief cut is provided between one of the plurality of projections and one of the plurality of supporting legs.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: June 4, 2024
    Assignee: Movandi Corporation
    Inventors: Seunghwan Yoon, Zhihui Wang, Franco De Flaviis, Alfred Grau Besoli, Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11990978
    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. Beamforming coefficients are generated to convert the first beam pattern of the first beam of input RF signals to a second beam pattern based on a location of each of a plurality of user equipment (UEs). 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, the plurality of UEs based on the generated beamforming coefficients and the received first beam of input RF signals.
    Type: Grant
    Filed: August 15, 2022
    Date of Patent: May 21, 2024
    Assignee: Movandi Corporation
    Inventors: Sam Gharavi, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Kartik Sridharan, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11984945
    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: Grant
    Filed: October 8, 2021
    Date of Patent: May 14, 2024
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran, Sam Gharavi, Qiyue “Jack” Zou, Alan Wang, Farid Shirinfar, Mike Boers
  • Patent number: 11973543
    Abstract: A communication device includes a service transmitter (Tx) configured to transmit a second beam of RF signals in a first radiation pattern to a user equipment (UE). The communication device further includes a control circuitry configured to: detect an amount and direction of echo signals at the donor receiver Rx corresponding to reflected RF signals in an environment surrounding a communication device; determine an installation location for the communication device based on echo signal measurements at one or more different locations; adjust polarization of the second beam of RF signals to minimize the echo signals at the donor receiver Rx based on the echo signal; and generate a second radiation pattern for at least the second beam of RF signals based on the amount and direction of the echo signals in the environment detected at the donor receiver Rx.
    Type: Grant
    Filed: February 6, 2023
    Date of Patent: April 30, 2024
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran, Sam Gharavi, Qiyue “Jack” Zou, Alan Wang, Farid Shirinfar, Mike Boers
  • Patent number: 11956061
    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. Beamforming coefficients are generated to convert the first beam pattern of the first beam of input RF signals to a second beam pattern based on a location of each of a plurality of user equipment (UEs). 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, the plurality of UEs based on the generated beamforming coefficients and the received first beam of input RF signals.
    Type: Grant
    Filed: August 15, 2022
    Date of Patent: April 9, 2024
    Assignee: Movandi Corporation
    Inventors: Sam Gharavi, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Kartik Sridharan, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11916642
    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. Beamforming coefficients are generated to convert the first beam pattern of the first beam of input RF signals to a second beam pattern based on a location of each of a plurality of user equipment (UEs). 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, the plurality of UEs based on the generated beamforming coefficients and the received first beam of input RF signals.
    Type: Grant
    Filed: August 15, 2022
    Date of Patent: February 27, 2024
    Assignee: Movandi Corporation
    Inventors: Sam Gharavi, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Kartik Sridharan, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11901635
    Abstract: An apparatus includes a plurality of antenna modules and a printed circuit board (PCB) having a plurality of holes embedded with a heat sink. Each antenna module includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells mounted on a first surface of the antenna substrate, and a plurality of packaged circuitry mounted on a second surface of the antenna substrate. The plurality of packaged circuitry are electrically connected with the plurality of 3-D antenna cells. Each of the plurality of antenna modules is mounted on a plurality of portions of the heat sink such that a corresponding packaged circuitry of the plurality of packaged circuitry is in a direct contact with the plurality of portions of the heat sink embedded within the plurality of holes.
    Type: Grant
    Filed: August 30, 2022
    Date of Patent: February 13, 2024
    Assignee: MOVANDI CORPORATION
    Inventors: Seunghwan Yoon, Franco De Flaviis, Alfred Grau Besoli, Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11855356
    Abstract: An apparatus includes a plurality of antenna modules and a printed circuit board (PCB) having a plurality of holes embedded with a heat sink. Each antenna module includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells mounted on a first surface of the antenna substrate, and a plurality of packaged circuitry mounted on a second surface of the antenna substrate. The plurality of packaged circuitry are electrically connected with the plurality of 3-D antenna cells. Each of the plurality of antenna modules is mounted on a plurality of portions of the heat sink such that a corresponding packaged circuitry of the plurality of packaged circuitry is in a direct contact with the plurality of portions of the heat sink embedded within the plurality of holes.
    Type: Grant
    Filed: August 30, 2022
    Date of Patent: December 26, 2023
    Assignee: MOVANDI CORPORATION
    Inventors: Seunghwan Yoon, Franco De Flaviis, Alfred Grau Besoli, Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 11848496
    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: Grant
    Filed: August 23, 2021
    Date of Patent: December 19, 2023
    Assignee: Movandi Corporation
    Inventors: Ahmadreza Rofougaran, Alfred Grau Besoli, Seunghwan Yoon, Farid Shirinfar, Sam Gharavi, Michael Boers, Maryam Rofougaran, Enver Adas, Kartik Sridharan