Patents by Inventor Dominique Rousselet

Dominique Rousselet 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).

  • Satellite transponder able to use same frequency scheme for transmitter and receiver local oscillator
    Patent number: 5163160
    Abstract: A satellite transponder has the local oscillator in the receiver slaved to a quartz crystal oscillator by a narrowband phase-locked loop during a standby period or in the absence of received signal and by a wideband phase-locked loop immediately the signal is received, at which time the narrowband phase-locked loop is switched out automatically.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: November 10, 1992
    Assignee: Alcatel Espace
    Inventors: Jean-Luc Foucher, Marc Atge, Dominique Rousselet, Emile Tonello, Pascal Triaud
  • Costas loop carrier recovery device
    Patent number: 5072196
    Abstract: A Costas loop carrier recovery device with particular application to communications with spacecraft includes a voltage-controlled oscillator. Two filters having different characteristics are connected to the oscillator by a loop filter via two circuits:a direct connection, anda parallel circuit including an amplifier in series with a filter.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: December 10, 1991
    Assignee: Alcatel Espace
    Inventors: Dominique Rousselet, Jean-Luc Foucher, Patrick Michau, Pascal Triaud