Patents by Inventor Pierre Waller

Pierre Waller 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).

  • Multi-beam satellite communications payload with flexible power allocation
    Patent number: 7181163
    Abstract: A communications payload configuration comprising a multi-port amplifier that incorporates remotely controllable travelling wave tube amplifiers (TWTAs) for allowing their output power to be adjusted depending on the traffic demand and the payload operational conditions. The power delivered by each TWTA is controlled by adjusting the TWTA anode voltage in response to a command signal received from the ground station. If a TWTA fails, the power delivered by each of the remaining TWTAs is increased by gross anode voltage control. The power lost by the failure is thus recovered by increasing the power of the remaining TWTAs. This power control is done in a constant efficiency way by also readjusting the TWTA collector voltages.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: February 20, 2007
    Assignee: Agence Spatiale Europeenne
    Inventors: Frances Coromina, Pierre Waller
  • Multi-beam satellite communications payload with flexible power allocation
    Publication number: 20040224633
    Abstract: A communications payload configuration comprising a multi-port amplifier that incorporates remotely controllable travelling wave tube amplifiers (TWTAs) for allowing their output power to be adjusted depending on the traffic demand and the payload operational conditions. The power delivered by each TWTA is controlled by adjusting the TWTA anode voltage in response to a command signal received from the ground station. If a TWTA fails, the power delivered by each of the remaining TWTAs is increased by gross anode voltage control. The power lost by the failure is thus recovered by increasing the power of the remaining TWTAs. This power control is done in a constant efficiency way by also readjusting the TWTA collector voltages.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 11, 2004
    Applicant: Agence Spatiale Europeenne
    Inventors: Francesc Coromina, Pierre Waller