Patents by Inventor Hansik OH

Hansik OH 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).

  • Dual-output and dual-mode supply modulator, two-stage power amplifier using the same, and supply modulation method therefor
    Patent number: 10784820
    Abstract: A dual-output and dual-mode supply modulator, a two-stage power amplifier using the same, and a supply modulation method therefor are provided. In order to improve the performance of a two-stage power amplifier used in a transmitter of a wireless communication system, the dual-output and dual-mode supply modulator according to the present invention may simultaneously supply an envelope tracking signal to a main amplification stage of the two-stage power amplifier and an average power tracking signal to an auxiliary amplification stage thereof. To this end, the dual-output and dual-mode supply modulator according to the present invention outputs two supply voltages and supports two operation modes.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: September 22, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Younggoo Yang, Hansik Oh, Sungjae Oh
  • DUAL-OUTPUT AND DUAL-MODE SUPPLY MODULATOR, TWO-STAGE POWER AMPLIFIER USING THE SAME, AND SUPPLY MODULATION METHOD THEREFOR
    Publication number: 20190253023
    Abstract: A dual-output and dual-mode supply modulator, a two-stage power amplifier using the same, and a supply modulation method therefor are provided. In order to improve the performance of a two-stage power amplifier used in a transmitter of a wireless communication system, the dual-output and dual-mode supply modulator according to the present invention may simultaneously supply an envelope tracking signal to a main amplification stage of the two-stage power amplifier and an average power tracking signal to an auxiliary amplification stage thereof. To this end, the dual-output and dual-mode supply modulator according to the present invention outputs two supply voltages and supports two operation modes.
    Type: Application
    Filed: December 27, 2018
    Publication date: August 15, 2019
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Younggoo YANG, Hansik OH, Sungjae OH