Patents by Inventor Julien KIEFFER

Julien KIEFFER 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).

  • Double output linearized low-noise charge pump with loop filter area reduction
    Patent number: 8766683
    Abstract: According to embodiments, dual path loop filter circuits are described which have, for example, a single charge pump. The current flow in the DPLF circuit is architected to source, during an injection time period, a first current to the loop filter, sink, also during the injection time period, a second current from the loop filter, wherein the first current has a magnitude of ?*I and the second current has a magnitude of ?*I, and sink, during a linearization time period, a third current from the loop filter, wherein the third current has a magnitude of (???)*I.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: July 1, 2014
    Assignee: ST-Ericsson SA
    Inventors: Marc Houdebine, Julien Kieffer, Sebastien Rieubon
  • DOUBLE OUTPUT LINEARIZED LOW-NOISE CHARGE PUMP WITH LOOP FILTER AREA REDUCTION
    Publication number: 20140049304
    Abstract: According to embodiments, dual path loop filter circuits are described which have, for example, a single charge pump. The current flow in the DPLF circuit is architected to source, during an injection time period, a first current to the loop filter, sink, also during the injection time period, a second current from the loop filter, wherein the first current has a magnitude of ?*I and the second current has a magnitude of ?*I, and sink, during a linearization time period, a third current from the loop filter, wherein the third current has a magnitude of (???)*I.
    Type: Application
    Filed: July 19, 2013
    Publication date: February 20, 2014
    Applicant: ST-Ericsson SA
    Inventors: Marc HOUDEBINE, Julien KIEFFER, Sebastien RIEUBON