Patents by Inventor SAHAR MOLLA AGHAJANZADEH

SAHAR MOLLA AGHAJANZADEH 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).

  • Method and apparatus for a hybrid time delay/phase shifter structure for beam squint mitigation in wideband antenna arrays
    Patent number: 11670850
    Abstract: A method and apparatus for mitigating the beam squint effect in a wideband wireless communication device involving a phased antenna array. Time delay units are operated in series with phase shifters to apply phase shifts to signals fed to or received from antenna elements. The array may be subdivided into sub-arrays each associated with its own time delay unit, and with each antenna element associated with its own phase shifter. The phase shifters are operated to compensate for location mismatch between time delay units and antenna elements, and also to compensate for practical limitations of the time delay units, such as length and quantization limitations.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: June 6, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Sahar Molla Aghajanzadeh, Samuel Alfred Tiller, Ming Jian
  • Analog beamforming method for mitigating beam squint effect in wideband phased array antennas
    Patent number: 11621754
    Abstract: A method of beam steering is provided to address the squint effect that occurs in phased array antennas when wideband signals are transmitted. Beam steering weights are computed based on an optimization that takes into account performance at a set of frequencies across a bandwidth of interest, including at least endpoints of the bandwidth, and a design frequency.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: April 4, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Sahar Molla Aghajanzadeh, Peyman Neshaastegaran, Ming Jian
  • METHOD AND APPARATUS FOR A HYBRID TIME DELAY/PHASE SHIFTER STRUCTURE FOR BEAM SQUINT MITIGATION IN WIDEBAND ANTENNA ARRAYS
    Publication number: 20220320727
    Abstract: A method and apparatus for mitigating the beam squint effect in a wideband wireless communication device involving a phased antenna array. Time delay units are operated in series with phase shifters to apply phase shifts to signals fed to or received from antenna elements. The array may be subdivided into sub-arrays each associated with its own time delay unit, and with each antenna element associated with its own phase shifter. The phase shifters are operated to compensate for location mismatch between time delay units and antenna elements, and also to compensate for practical limitations of the time delay units, such as length and quantization limitations.
    Type: Application
    Filed: March 30, 2021
    Publication date: October 6, 2022
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Sahar MOLLA AGHAJANZADEH, Samuel Alfred TILLER, Ming JIAN
  • ANALOG BEAMFORMING METHOD FOR MITIGATING BEAM SQUINT EFFECT IN WIDEBAND PHASED ARRAY ANTENNAS
    Publication number: 20220116086
    Abstract: A method of beam steering is provided to address the squint effect that occurs in phased array antennas when wideband signals are transmitted. Beam steering weights are computed based on an optimization that takes into account performance at a set of frequencies across a bandwidth of interest, including at least endpoints of the bandwidth, and a design frequency.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 14, 2022
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: SAHAR MOLLA AGHAJANZADEH, PEYMAN NESHAASTEGARAN, MING JIAN