Patents by Inventor John A. Koerner

John A. Koerner 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 polarized blade antenna
    Patent number: 4015263
    Abstract: A very small vertically and horizontally polarized antenna having direction finding capabilities at low microwave frequencies employs filamentary vertically polarized antenna elements and resistively loaded slots for horizontally polarized radiation with a pair of the antennas being employed for direction finding.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: March 29, 1977
    Assignee: Textron, Inc.
    Inventors: John A. Koerner, James P. Scherer, Donald J. Stoddard, George N. Voronoff
  • Dual mode broadband antenna
    Patent number: 4015264
    Abstract: A cavity-backed spiral antenna has a plurality of resistively loaded monopole radiators disposed in the cavity in orthogonal relation to the spiral windings to maximize the frequency range of the antenna without increasing the physical size thereof.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: March 29, 1977
    Assignee: Textron, Inc.
    Inventor: John A. Koerner