Patents by Inventor Eui-Song Choi

Eui-Song Choi 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).

  • Publication number: 20240429601
    Abstract: The present invention relates to a full analog phase shifter, and more particularly, comprises: a variable switch panel comprising a first conductive pattern terminal and a second conductive pattern terminal; and a pattern PCB on which a plurality of array antenna elements are arranged and a transmission line at which the first conductive pattern terminal and the second conductive pattern terminal come into contact is pattern-printed, wherein, assuming that two variable switch panels are disposed in the vertical direction, the two variable switch panels are provided as a slider type that slides in the vertical direction so that, due to a phase shift caused by the contact between the first conductive pattern terminal and the second conductive pattern terminal and the transmission line, phases of the plurality of array antenna elements are linearly distributed on a same reference phase plane, thereby providing the advantage of easily implementing a mirror symmetry structure having a linear phase distribution on
    Type: Application
    Filed: September 9, 2024
    Publication date: December 26, 2024
    Applicant: KMW INC.
    Inventors: Sung Hwan SO, Eui Song CHOI, Seong Man KANG, Dong Hee SHIN, Hwa Yeol JANG, Yong Won SEO, Won Jun PARK, Gyo Jin JO
  • Publication number: 20090195329
    Abstract: Disclosed is a variable phase shifter The variable phase shifter includes a housing; a fixed board unit fixedly installed inside the housing, equipped with an input microstrip line with a via hole for receiving an input signal on one face thereof, and equipped with at least one circular arc-shaped output microstrip line outside the input microstrip line; and a rotating board unit rotatably installed inside the housing while being in contact with the one face of the fixed board unit, equipped with a transmission microstrip line on a face coming in contact with the one face of the fixed board unit, and for providing at least one output signal by making coupling even during rotation thereof.
    Type: Application
    Filed: June 19, 2007
    Publication date: August 6, 2009
    Applicant: KMW INC.
    Inventors: Duk-Yong Kim, Young-Chan Moon, Ryoji Matsubara, Eui-Song Choi, Nam-Il Kim