Patents by Inventor David Sall

David Sall 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).

  • Reflectarray antenna system
    Patent number: 11575214
    Abstract: A reflectarray antenna system includes an antenna feed configured to at least one of transmit and receive a wireless signal occupying a frequency band. The system also includes a reflector having a reflectarray. The reflectarray includes a plurality of reflectarray elements, where each of the reflectarray elements includes a dipole element. The dipole element of at least a portion of the plurality of reflectarray elements comprises a crossed-dipole portion and a looped-dipole portion. The plurality of reflectarray elements can be configured to selectively phase-delay the wireless signal to provide the wireless signal as a coherent beam.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: February 7, 2023
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Thomas H. Hand, Michael E. Cooley, David Sall, Gary L. Kempic
  • Wideband reflectarray using electrically re-focusable phased array feed
    Patent number: 10897075
    Abstract: A planar reflectarray system provides for bandwidth broadening by employing a tunable (amplitude and phase) feed array. The tunable feed array is adjustable in amplitude and phase to compensate for aberrations by enabling feed re-focusing and field matching. The techniques modestly increase the size of the feed array and use active tuning to effectively correct for de-focusing when operating reflectarrays at frequencies away from the tuned center frequency.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: January 19, 2021
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Michael E. Cooley, Bret J. Yon, David Sall, Robert J. March, Scott A. Wilson, John Hodge, Alyssa Harris, Nicholas Fasanella
  • WIDEBAND REFLECTARRAY USING ELECTRICALLY RE-FOCUSABLE PHASED ARRAY FEED
    Publication number: 20200176858
    Abstract: A planar reflectarray system provides for bandwidth broadening by employing a tunable (amplitude and phase) feed array. The tunable feed array is adjustable in amplitude and phase to compensate for aberrations by enabling feed re-focusing and field matching. The techniques modestly increase the size of the feed array and use active tuning to effectively correct for de-focusing when operating reflectarrays at frequencies away from the tuned center frequency.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 4, 2020
    Inventors: Michael E. Cooley, Bret J. Yon, David Sall, Robert J. March, Scott A. Wilson, John Hodge, Alyssa Harris, Nicholas Fasanella
  • REFLECTARRAY ANTENNA SYSTEM
    Publication number: 20190165485
    Abstract: A reflectarray antenna system includes an antenna feed configured to at least one of transmit and receive a wireless signal occupying a frequency band. The system also includes a reflector having a reflectarray. The reflectarray includes a plurality of reflectarray elements, where each of the reflectarray elements includes a dipole element. The dipole element of at least a portion of the plurality of reflectarray elements comprises a crossed-dipole portion and a looped-dipole portion. The plurality of reflectarray elements can be configured to selectively phase-delay the wireless signal to provide the wireless signal as a coherent beam.
    Type: Application
    Filed: January 31, 2019
    Publication date: May 30, 2019
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: THOMAS H. HAND, MICHAEL E. COOLEY, DAVID SALL, GARY L. KEMPIC
  • Reflectarray antenna system
    Patent number: 10263342
    Abstract: One embodiment describes a reflectarray antenna system. The system includes an antenna feed configured to at least one of transmit and receive a wireless signal occupying a frequency band. The system also includes a reflector comprising a reflectarray. The reflectarray includes a plurality of reflectarray elements, where each of the reflectarray elements includes a dipole element. The dipole element of at least a portion of the plurality of reflectarray elements comprises a crossed-dipole portion and a looped-dipole portion. The plurality of reflectarray elements can be configured to selectively phase-delay the wireless signal to provide the wireless signal as a coherent beam.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: April 16, 2019
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Thomas H. Hand, Michael E. Cooley, David Sall, Gary L. Kempic
  • REFLECTARRAY ANTENNA SYSTEM
    Publication number: 20150102973
    Abstract: One embodiment describes a reflectarray antenna system. The system includes an antenna feed configured to at least one of transmit and receive a wireless signal occupying a frequency band. The system also includes a reflector comprising a reflectarray. The reflectarray includes a plurality of reflectarray elements, where each of the reflectarray elements includes a dipole element. The dipole element of at least a portion of the plurality of reflectarray elements comprises a crossed-dipole portion and a looped-dipole portion. The plurality of reflectarray elements can be configured to selectively phase-delay the wireless signal to provide the wireless signal as a coherent beam.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 16, 2015
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Thomas H. Hand, Michael E. Cooley, David Sall, Gary L. Kempic