Patents by Inventor Christopher A. Hamner

Christopher A. Hamner 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: 9614279
    Abstract: A system for calibrating an array antenna comprises a calibration antenna at a first location relative to an array antenna, a first set of calibration files, and a processor. Based on received far field data from a far field data test that was run on the array antenna, using the calibration antenna, the processor is configured to generate a model predicting the actual location of the calibration antenna relative to the array antenna and to generate predicted far field data based on the model. The model is adjusted, if needed, by comparing the predicted far field data with the received far field data. Based on the model, new calibration files are generated that substantially correlate to the actual location of the calibration antenna.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: April 4, 2017
    Assignee: Raytheon Company
    Inventors: Thomas J. McDevitt, David A. Brennan, Curtis Combs, Christopher A. Hamner, Macdonald J. Andrews, Joseph D. Corn
  • Publication number: 20160043465
    Abstract: A system for calibrating an array antenna comprises a calibration antenna at a first location relative to an array antenna, a first set of calibration files, and a processor. Based on received far field data from a far field data test that was run on the array antenna, using the calibration antenna, the processor is configured to generate a model predicting the actual location of the calibration antenna relative to the array antenna and to generate predicted far field data based on the model. The model is adjusted, if needed, by comparing the predicted far field data with the received far field data. Based on the model, new calibration files are generated that substantially correlate to the actual location of the calibration antenna.
    Type: Application
    Filed: August 11, 2014
    Publication date: February 11, 2016
    Inventors: Thomas J. McDevitt, David A. Brennan, Curtis Combs, Christopher A. Hamner, Macdonald J. Andrews, Joseph D. Corn
  • Patent number: 8854257
    Abstract: A Luneburg lens is used in conjunction with a patch antenna array. The patch antenna array is conformed or adapted to cover a portion or backside of the Luneburg len's surface with the backplane of the conformed antenna array defining a field of regard (FOR) in which objects are detected and tracked. A processor is connected to a receiver/exciter module which connects to transmit/receive modules which are connected to the individual patch antennas through a network of MEMS switches. In a receive mode, selected subarrays of the conformed patch antenna array are scanned during selected time intervals with the sum and delta beams being formed coherently in amplitude and phase to realize amplitude monopulse sensing and angle tracking of an object.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: October 7, 2014
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Christopher A. Hamner, Robert A. Spencer