Patents by Inventor Joshua W. WITHROW

Joshua W. WITHROW 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).

  • Gradient-index lens for aperture-constrained arrays and system, apparatus, and method thereof
    Patent number: 11442203
    Abstract: A gradient-index (GRIN) lens comprises an input surface defined by a body configured to receive electromagnetic (EM) waves from an aperture-constrained array; and an output surface defined by the body configured to output phase-aligned EM waves based on the received EM waves from the aperture-constrained array. The GRIN lens can be dimension-constrained in at least one dimension and can have a non-linear permittivity taper in at least a first dimension. The GRIN lens can provide gain for the received EM waves from the aperture-constrained array.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: September 13, 2022
    Assignee: Lockheed Martin Corporation
    Inventors: Joshua W. Withrow, John P. Barrett
  • GRADIENT-INDEX LENS FOR APERTURE-CONSTRAINED ARRAYS AND SYSTEM, APPARATUS, AND METHOD THEREOF
    Publication number: 20210318470
    Abstract: A gradient-index (GRIN) lens comprises an input surface defined by a body configured to receive electromagnetic (EM) waves from an aperture-constrained array; and an output surface defined by the body configured to output phase-aligned EM waves based on the received EM waves from the aperture-constrained array. The GRIN lens can be dimension-constrained in at least one dimension and can have a non-linear permittivity taper in at least a first dimension. The GRIN lens can provide gain for the received EM waves from the aperture-constrained array.
    Type: Application
    Filed: April 10, 2020
    Publication date: October 14, 2021
    Applicant: Lockheed Martin Corporation
    Inventors: Joshua W. WITHROW, John P. BARRETT