Patents by Inventor Michel Gayral

Michel Gayral 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).

  • Limiter circuit having a field effect transistor
    Patent number: 5136193
    Abstract: A limiter circuit having a field effect transistor whose bias circuit is constituted by two constant voltage feeds: one for its gate and the other for its drain, with a resistive load being connected in series with the feed to the gate of the transistor. The invention is particularly applicable to space telecommunications.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: August 4, 1992
    Assignee: Alcatel Espace
    Inventors: Michel Pouysegur, Thierry Parra, Michel Gayral, Jacques Graffeuil, Jean-Francois Sautereau
  • High-efficiency amplifier
    Patent number: 5103189
    Abstract: The disclosure concerns a microwave amplifier. To improve the efficiency of an amplifier having a field-effect transistor, an input quadripole and an output quadripole, the voltage applied to the gate is limited to a deviation between the pinch-off voltage V.sub.P and the positive maximum gate voltage V.sub.GS, using a diode of a second order harmonic reverse feedback circuit. Application to microwave circuits.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: April 7, 1992
    Assignee: Thomson Composants Microondes
    Inventors: Marc Camiade, Michel Gayral