Patents Assigned to National ADL Enterprises
  • Collocated non-interfering dual frequency microwave feed assembly
    Patent number: 5107274
    Abstract: A dual frequency feed assembly for an antenna system having two coaxial cavities, with a smaller, high-frequency cavity mounted coaxially within a larger, low-frequency cavity. A separately rotatable probe is mounted within each cavity. The smaller cavity is mounted within the larger cavity by any of several structures, such as a ring-shaped spider, a ring-shaped spacer in the form of a planar washer, or a harp extending rearwardly in the larger cavity.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: April 21, 1992
    Assignee: National ADL Enterprises
    Inventors: Rodney A. Mitchell, Gerry B. Blachley