Patents by Inventor Song-Cheoll HONG

Song-Cheoll HONG 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).

  • Phase shifting device
    Patent number: 10411348
    Abstract: Provided is a phase shifting device including a first balun outputting first and second differential input signals, an I/Q generator outputting first to fourth phase signals based on the first and second differential input signals, a control circuit outputting a first control signal, a second control signal, a plurality of in-phase select signals, and a plurality of quadrature select signals, a current source circuit including a first source transistor outputting an in-phase current according to the first control signal and a second source outputting a quadrature current according to the second control signal, a vector sum circuit outputting first and second differential output signals based on the first to fourth phase signals according to the plurality of in-phase select signals and the plurality of quadrature select signals and including a plurality of sub-vector sum circuits, and a second balun outputting an output signal.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: September 10, 2019
    Assignees: LG ELECTRONICS INC., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jinseok Park, Song-Cheoll Hong, Seung Hoon Kang, Jaehoon Chung, Minki Ahn
  • PHASE SHIFTING DEVICE
    Publication number: 20180198206
    Abstract: Provided is a phase shifting device including a first balun outputting first and second differential input signals, an I/Q generator outputting first to fourth phase signals based on the first and second differential input signals, a control circuit outputting a first control signal, a second control signal, a plurality of in-phase select signals, and a plurality of quadrature select signals, a current source circuit including a first source transistor outputting an in-phase current according to the first control signal and a second source outputting a quadrature current according to the second control signal, a vector sum circuit outputting first and second differential output signals based on the first to fourth phase signals according to the plurality of in-phase select signals and the plurality of quadrature select signals and including a plurality of sub-vector sum circuits, and a second balun outputting an output signal.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 12, 2018
    Applicants: LG ELECTRONICS INC., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jinseok PARK, Song-Cheoll HONG, SEUNG HOON KANG, Jaehoon CHUNG, Minki AHN