Patents by Inventor Ahlem Ramdane

Ahlem Ramdane 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).

  • Transition device between a waveguide and two redundant circuits coupled each to a coplanar line
    Patent number: 7463110
    Abstract: A redundant transition device between a waveguide (1) and at least two redundant processing circuits (2, 3) includes two uncoupled coplanar lines (5, 6) formed one on either side of a single substrate plate (4) and extending, in part at least, into the waveguide (1). Each coplanar line (5) has a longitudinal end (17) for connection to one (2) of the processing circuits, and a longitudinal transfer end (16), adapted to channel an electromagnetic wave between the waveguide and the slots (21, 22) of the coplanar line. Each coplanar line (5, 6) is provided with a phase shifting element (25, 26), for inverting the phase of an electric field on one side of the central transmission strip (7, 10) of the coplanar line.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: December 9, 2008
    Assignee: Centre National d'Etudes Spatiales (C.N.E.S.)
    Inventors: Luc Lapierre, Jerome Puech, Odile Picon, Ahlem Ramdane, Elodie Richalot-Taisne
  • Transition Device Between A Waveguide And Two Redundant Circuits Coupled Each To A Coplanar Line
    Publication number: 20070285143
    Abstract: A redundant transition device between a waveguide (1) and at least two redundant processing circuits (2, 3) includes two uncoupled coplanar lines (5, 6) formed one on either side of a single substrate plate (4) and extending, in part at least, into the waveguide (1). Each coplanar line (5) has a longitudinal end (17) for connection to one (2) of the processing circuits, and a longitudinal transfer end (16), adapted to channel an electromagnetic wave between the waveguide and the slots (21, 22) of the coplanar line. Each coplanar line (5, 6) is provided with a phase shifting element (25, 26), for inverting the phase of an electric field on one side of the central transmission strip (7, 10) of the coplanar line.
    Type: Application
    Filed: June 15, 2005
    Publication date: December 13, 2007
    Applicant: Centre National D'Etudes
    Inventors: Luc Lapierre, Jerome Puech, Odile Picon, Ahlem Ramdane, Elodie Richalot-Taisne