Patents by Inventor Ludovic Leger

Ludovic Leger 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).

  • Frequency multiband antenna with photonic bandgap material
    Patent number: 7411564
    Abstract: A frequency multiband antenna includes a photonic bandgap material having at least one band gap, one single periodicity defect of the bandgap material so as to produce several narrow bandwidths within the at least one band gap of the bandgap material, and an excitation device capable of transmitting and/or receiving electromagnetic waves within the narrow bandwidths.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: August 12, 2008
    Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Centre National d'Etudes Spatiles
    Inventors: Marc Thevenot, Régis Chantalat, Bernard Jecko, Ludovic Leger, Thierry Monediere, Patrick Dumon
  • Multibeam antenna with photonic bandgap material
    Patent number: 7242368
    Abstract: A multibeam antenna includes: a photonic bandgap material (20) having at least one band gap; at least one periodicity defect so as to produce at least one narrow bandwidth inside the at least one band gap of the photonic bandgap material, and excitation elements (50 to 43) for enabling electromagnetic waves to be received inside the at least one narrow bandwidth. The excitation elements are mutually arranged so as to generate radiating spots (46 to 49) partly overlapping on one surface of the photonic bandgap material.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: July 10, 2007
    Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Centre National d'Etudes Spatiales
    Inventors: Marc Thevenot, Régis Chantalat, Bernard Jecko, Ludovic Leger, Thierry Monediere, Patrick Dumon
  • Multiple-beam antenna with photonic bandgap material
    Patent number: 7233299
    Abstract: A system includes a device for focusing electromagnetic waves, and a multiple-beam antenna. The antenna includes: a photonic bandgap material (20) having at least one band gap, at least one periodicity defect (36) of the photonic bandgap material so as to produce at least one narrow bandwidth within the bandgap material, and excitation elements (40 to 43) for transmitting and/or receiving electromagnetic waves within the at least one narrow bandwidth, the elements being arranged relative to one another so as to produce overlapping radiating spots.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: June 19, 2007
    Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Centre National d'Etudes Spatiales
    Inventors: Marc Thevenot, Régis Chantalat, Bernard Jecko, Ludovic Leger, Thierry Monediere, Patrick Dumon, Hervé Legay
  • Multibeam antenna with photonic bandgap material
    Publication number: 20060132378
    Abstract: The invention concerns a multibeam antenna comprising: a photonic bandgap material (20) having at least one band gap; at least on e periodicity defect so as to produce at least one narrow bandwidth inside said at least one band gap of said photonic bandgap material, and excitation elements (50 to 43) for enabling electromagnetic waves to be received inside said at least one narrow bandwidth. The excitation elements are mutually arranged so as to generate radiating spots (46 to 49) partly overlapping on one surface of the photonic bandgap material.
    Type: Application
    Filed: October 23, 2003
    Publication date: June 22, 2006
    Inventors: Marc Thevenot, Regis Chantalat, Bernard Jecko, Ludovic Leger, Thierry Monediere, Patrick Dumon
  • Multiple-beam antenna with photonic bandgap material
    Publication number: 20060125713
    Abstract: A system includes a device for focusing electromagnetic waves, and a multiple-beam antenna. The antenna includes: a photonic bandgap material (20) having at least one band gap, at least one periodicity defect (36) of the photonic bandgap material so as to produce at least one narrow bandwidth within the bandgap material, and excitation elements (40 to 43) for transmitting and/or receiving electromagnetic waves within the at least one narrow bandwidth, the elements being arranged relative to one another so as to produce overlapping radiating spots.
    Type: Application
    Filed: October 23, 2003
    Publication date: June 15, 2006
    Inventors: Marc Thevenot, Regis Chantalat, Bernard Jecko, Ludovic Leger, Thierry Monediere, Patrick Dumon, Herve Legay
  • Frequency multiband antenna with photonic bandgap material
    Publication number: 20060097917
    Abstract: A frequency multiband antenna comprising: a photonic bandgap material (142) having at least one band gap, one single periodicity defect (156) of the bandgap material so as to produce several narrow bandwidths within the at least one band gap of the bandgap material, and an excitation device (160, 162) capable of transmitting and/or receiving electromagnetic waves within the narrow bandwidths.
    Type: Application
    Filed: October 23, 2003
    Publication date: May 11, 2006
    Inventors: Marc Thevenot, Regis Chantalat, Bernard Jecko, Ludovic Leger, Thierry Monediere, Patrick Dumon