Patents by Inventor Leendert Quist

Leendert Quist 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).

  • Power amplifier control
    Publication number: 20040072597
    Abstract: The present invention provides for power amplifier control of amplifier circuitry including an input stage and one or more output stages. The input stage is powered separately from the output stage by a relatively fixed power source. The one or more output stages are supplied with power via a voltage regulator having a controllable output voltage. A closed loop control integrated with the amplifier stages forces the voltage output of the voltage regulator to track the profile of an adjustable control signal, such as VRAMP.
    Type: Application
    Filed: July 16, 2003
    Publication date: April 15, 2004
    Applicant: RF MICRO DEVICES, INC.
    Inventors: Darrell Epperson, Leendert Quist
  • Power amplifier control
    Patent number: 6701138
    Abstract: The present invention provides for power amplifier control of amplifier circuitry including an input stage and one or more output stages. The input stage is powered separately from the output stage by a relatively fixed power source. The one or more output stages are supplied with power via a voltage regulator having a controllable output voltage. A closed loop control integrated with the amplifier stages forces the voltage output of the voltage regulator to track the profile of an adjustable control signal, such as VRAMP.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: March 2, 2004
    Assignee: RF Micro Devices, Inc.
    Inventors: Darrell Epperson, Leendert Quist
  • Power amplifier control
    Publication number: 20030040343
    Abstract: The present invention provides for power amplifier control of amplifier circuitry including an input stage and one or more output stages. The input stage is powered separately from the output stage by a relatively fixed power source. The one or more output stages are supplied with power via a voltage regulator having a controllable output voltage. A closed loop control integrated with the amplifier stages forces the voltage output of the voltage regulator to track the profile of an adjustable control signal, such as VRAMP.
    Type: Application
    Filed: June 11, 2001
    Publication date: February 27, 2003
    Inventors: Darrell Epperson, Leendert Quist