Patents by Inventor Thomas Edward Christian, Jr.

Thomas Edward Christian, Jr. 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).

  • In-situ active impedance characterization of scanned array antennas
    Patent number: 10720703
    Abstract: Various embodiments presented herein relate to determining mutual coupling between a pair of antennas in an array antenna. Various operations presented herein enable comparison between a magnitude and phase of a signal transmitted from a first feed network (via a first antenna) and a magnitude and phase of a portion of the signal received at a second feed network (via a second antenna). Electrical effects engendered by any of the first feed network, a first switch, a first local circuit, the second feed network, a second switch, and a second local circuit can also be determined and their effects mathematically removed. Based upon the foregoing, a mutual coupling between the pair of antenna is determined.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: July 21, 2020
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Hung Loui, Thomas Edward Christian, Jr.
  • IN-SITU ACTIVE IMPEDANCE CHARACTERIZATION OF SCANNED ARRAY ANTENNAS
    Publication number: 20190165469
    Abstract: Various embodiments presented herein relate to determining mutual coupling between a pair of antennas in an array antenna. Various operations presented herein enable comparison between a magnitude and phase of a signal transmitted from a first feed network (via a first antenna) and a magnitude and phase of a portion of the signal received at a second feed network (via a second antenna). Electrical effects engendered by any of the first feed network, a first switch, a first local circuit, the second feed network, a second switch, and a second local circuit can also be determined and their effects mathematically removed. Based upon the foregoing, a mutual coupling between the pair of antenna is determined.
    Type: Application
    Filed: January 15, 2019
    Publication date: May 30, 2019
    Inventors: Hung Loui, Thomas Edward Christian, JR.
  • In-situ active impedance characterization of scanned array antennas
    Patent number: 10218068
    Abstract: Various embodiments presented herein relate to determining mutual coupling between a pair of antennas in an array antenna. Various operations presented herein enable comparison between a magnitude and phase of a signal transmitted from a first feed network (via a first antenna) and a magnitude and phase of a portion of the signal received at a second feed network (via a second antenna). Electrical effects engendered by any of the first feed network, a first switch, a first local circuit, the second feed network, a second switch, and a second local circuit can also be determined and their effects mathematically removed. Based upon the foregoing, a mutual coupling between the pair of antenna is determined.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: February 26, 2019
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Hung Loui, Thomas Edward Christian, Jr.