Patents by Inventor Jean-Christophe Louvigne

Jean-Christophe Louvigne 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).

  • Broadband helical antenna
    Patent number: 7525508
    Abstract: A helical antenna comprising at least one helix which is formed by at least two radiating wires. According to the invention, at least one of said radiating wires is associated with a parasitic wire having a width which is less than or equal to the radiating wire(s), such as to broaden the bandwidth of the antenna.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: April 28, 2009
    Assignee: Universite de Rennes 1
    Inventors: Ala Sharaiha, Yoann Letestu, Jean-Christophe Louvigne
  • Broadband helical antenna
    Publication number: 20060125712
    Abstract: A helical antenna comprising at least one helix which is formed by at least two radiating wires. According to the invention, at least one of said radiating wires is associated with a parasitic wire having a width which is less than or equal to the radiating wire(s), such as to broaden the bandwidth of the antenna.
    Type: Application
    Filed: September 10, 2003
    Publication date: June 15, 2006
    Inventors: Ala Sharaiha, Yoann Letestu, Jean-Christophe Louvigne
  • Variable-pitch helical antenna, and corresponding method
    Patent number: 6836257
    Abstract: A helical antenna includes at least a helix consisting of at least two radiating strands, at least one of the strands consisting of at least two segments, the winding angles of at least two of the segments being different and randomly or pseudo-randomly determined with global optimising means.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: December 28, 2004
    Assignee: France Telecom
    Inventors: Jean-Christophe Louvigne, Ala Sharaiha, Jean-Pierre Blot
  • Variable-pitch helical antenna, and corresponding method
    Publication number: 20030184496
    Abstract: The invention concerns a helical antenna, comprising at least a helix consisting of at least two radiating strands, at least one of said strands consisting of at least two segments, the winding angles of at least two of said segments being different and randomly or pseudo-randomly determined with global optimising means.
    Type: Application
    Filed: March 3, 2003
    Publication date: October 2, 2003
    Inventors: Jean-Christophe Louvigne, Ala Sharaiha, Jean-Pierre Blot