Patents by Inventor Won Seob LIM

Won Seob LIM 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).

  • Average power tracking mode power amplifier using dual bias voltage levels
    Patent number: 10153741
    Abstract: An average power tracking mode power amplifier is disclosed herein. The average power tracking mode power amplifier includes a Power Amplifier (PA), a first Direct Current (DC)-DC voltage converter, and a second DC-DC voltage converter. The PA includes a driver stage configured to be driven by first drive voltage and a main amplification stage configured to be driven by second drive voltage. The first DC-DC voltage converter generates the first drive voltage from power voltage so that the first drive voltage is equal to or higher than the power voltage, and applies the generated first drive voltage to the driver stage. The second DC-DC voltage converter generates the second drive voltage from the power voltage so that the second drive voltage is higher than the first drive voltage, and applies the generated second drive voltage to the main amplification stage.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: December 11, 2018
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Youngoo Yang, Won Seob Lim
  • AVERAGE POWER TRACKING MODE POWER AMPLIFIER USING DUAL BIAS VOLTAGE LEVELS
    Publication number: 20170005629
    Abstract: An average power tracking mode power amplifier is disclosed herein. The average power tracking mode power amplifier includes a Power Amplifier (PA), a first Direct Current (DC)-DC voltage converter, and a second DC-DC voltage converter. The PA includes a driver stage configured to be driven by first drive voltage and a main amplification stage configured to be driven by second drive voltage. The first DC-DC voltage converter generates the first drive voltage from power voltage so that the first drive voltage is equal to or higher than the power voltage, and applies the generated first drive voltage to the driver stage. The second DC-DC voltage converter generates the second drive voltage from the power voltage so that the second drive voltage is higher than the first drive voltage, and applies the generated second drive voltage to the main amplification stage.
    Type: Application
    Filed: June 7, 2016
    Publication date: January 5, 2017
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Youngoo YANG, Won Seob LIM