Patents by Inventor David R. Tanner

David R. Tanner 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).

  • Dual reflector system and method for synthesizing same
    Patent number: 7006049
    Abstract: In one embodiment of the present invention, an offset folded reflector pair is optimized for scanning off boresight by enforcing the Abbe Sine condition using a least-error approximation. Coma and astigmatism compare favorably over single reflector system and Gregorian pairs over a moderate field of view. A folded-pair reflector system of the present invention offers good performance in a compact size.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: February 28, 2006
    Assignee: Lockheed Martin Corporation
    Inventors: Joseph T. Loane, David R. Tanner
  • Large instantaneous bandwidth reflector array
    Patent number: 6184839
    Abstract: A reflector for an antenna includes a plurality of reflector elements, each having a transmission line and an aperture at a distal end of the transmission line. Each transmission line having a length which varies in accordance with the position of each aperture relative to the antenna. The varying length of transmission creates a time delay that phases re-radiated waves.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: February 6, 2001
    Assignee: Lockheed Martin Missiles & Space Company
    Inventors: Frank D. Butscher, William J. Dawley, Joseph T. Loane, David R. Tanner
  • Curved microstrip antennas
    Patent number: 4823145
    Abstract: A thin planar curved microstrip antenna is described which exhibits substantially constant input impedance characteristics over a wide frequency band. The impedance characteristic is achieved by shaping the ground surface such that the ratio of the width of the radiating element to its distance from the ground surface stays constant for a given curvature.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: April 18, 1989
    Assignee: University Patents, Inc.
    Inventors: Paul E. Mayes, David R. Tanner