Patents by Inventor Nicolas Le Gallou

Nicolas Le Gallou 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).

  • Radio-frequency high power amplifier with broadband envelope tracking by means of reversed buck converter
    Patent number: 9654055
    Abstract: A radio-frequency power amplifier with envelope tracking, having a power RF amplifying device for amplifying a RF signal and a switching DC/DC converter for providing the power RF amplifying device with a DC power supply at a voltage level (VSUPP) proportional to an envelope of the RF signal, wherein the switching DC/DC converter has a reversed buck topology. Advantageously the switching device is a N-type GaN Field Effect Transistor having its drain connected to the ground.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: May 16, 2017
    Assignee: Agence Spatiale Europeenne
    Inventors: Christophe Delepaut, Nicolas Le Gallou
  • RADIO-FREQUENCY HIGH POWER AMPLIFIER WITH BROADBAND ENVELOPE TRACKING BY MEANS OF REVERSED BUCK CONVERTER
    Publication number: 20160056770
    Abstract: A radio-frequency power amplifier with envelope tracking, having a power RF amplifying device for amplifying a RF signal and a switching DC/DC converter for providing the power RF amplifying device with a DC power supply at a voltage level (VSUPP) proportional to an envelope of the RF signal, wherein the switching DC/DC converter has a reversed buck topology. Advantageously the switching device is a N-type GaN Field Effect Transistor having its drain connected to the ground.
    Type: Application
    Filed: April 15, 2013
    Publication date: February 25, 2016
    Applicant: Agence Spatiale Europeenne
    Inventors: Christophe Delepaut, Nicolas Le Gallou
  • Radio-frequency power amplifier with fast envelope tracking
    Patent number: 8669811
    Abstract: A radio-frequency power amplifier with envelope tracking, comprising: a power RF amplifying device for amplifying a RF signal; and a switching DC/DC converter, comprising a switching device and a rectifying device, for providing said power RF amplifying device with a DC power supply at a voltage level proportional to an envelope of said RF signal; wherein said switching device is a RF power transistor; characterized in that said rectifying device, and preferably also said power RF amplifying device, is also a transistor of a same technology, connected as a two-terminal device. Preferably, said power RF amplifying device is also a transistor of said same technology. A low-pass filter can also be provided for reducing the bandwidth of the envelope signal on which the PWM signal driving the DC/DC converter depends.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: March 11, 2014
    Assignee: Agence Spatiale Europeenne
    Inventors: Nicolas Le Gallou, Christophe Delepaut, David Sardin, Michel Campovecchio
  • Radio-Frequency Power Amplifier with Fast Envelope Tracking
    Publication number: 20120062323
    Abstract: A radio-frequency power amplifier with envelope tracking, comprising: a power RF amplifying device for amplifying a RF signal; and a switching DC/DC converter, comprising a switching device and a rectifying device, for providing said power RF amplifying device with a DC power supply at a voltage level proportional to an envelope of said RF signal; wherein said switching device is a RF power transistor; characterized in that said rectifying device, and preferably also said power RF amplifying device, is also a transistor of a same technology, connected as a two-terminal device. Preferably, said power RF amplifying device is also a transistor of said same technology. A low-pass filter can also be provided for reducing the bandwidth of the envelope signal on which the PWM signal driving the DC/DC converter depends.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 15, 2012
    Applicant: AGENCE SPATIALE EUROPEENNE
    Inventors: Nicolas Le Gallou, Christophe Delepaut, David Sardin, Michel Campovecchio