Patents by Inventor Daniel Caer

Daniel Caer 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).

  • Waveguide with non-inclined radiating slots excited by flat metal plates
    Patent number: 5422652
    Abstract: In a waveguide (1) having slots (2, 3) perpendicular to the axis of the waveguide, cut out in a narrow wall of the waveguide, there are positioned, on each side of each slot, pairs of metal flat plates (21, 22; 31, 32) symmetrical with respect to the central axis of the slot. These flat plates modify the electrical field at the associated slot and make it possible to excite it, the value of the coupling being set by the adjusting of the size of the flat plates and of their position with respect to the corresponding radiating slot.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: June 6, 1995
    Assignee: Thomson-CSF
    Inventors: Daniel Caer, Jean Le Foll
  • Patch-excited non-inclined radiating slot waveguide
    Patent number: 5170174
    Abstract: In a waveguide (1) having slots (2, 3) perpendicular to the axis of the waveguide and cut in a narrow wall of the waveguide, a printed circuit plate (4) is positioned. This plate has patches (5, 7) for coupling with the energy being propagated in the waveguide and microstrip lines (6, 8) connected to the patches to excite the slots (2, 3) with the energy thus tapped. These slot waveguides can be used particularly in array antennas.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: December 8, 1992
    Assignee: Thomson-CSF
    Inventors: Daniel Caer, Jean Le Foll, Joseph Roger