Patents by Inventor Do Sun NA

Do Sun NA 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).

  • TIME DIVISION DUPLEX SEMI-ACTIVE BASE STATION ANTENNA SYSTEM
    Publication number: 20250279816
    Abstract: Provided is a time division duplex semi-active base station antenna system. The time division duplex semi-active base station antenna system includes: an antenna block including a plurality of transmission/reception-combined antenna elements; a TxRx switching block configured to separate a transmission path and a reception path, which are connected to the transmission/reception-combined antenna elements, from each other by a timing signal for time division control; and a TxRx timing recovery block configured to generate the timing signal from a transmission signal provided from a radio unit.
    Type: Application
    Filed: November 8, 2023
    Publication date: September 4, 2025
    Inventors: Sang Gi KIM, Yury SINELNIKOV, Yo Han KIM, Sang Jin KIM, Do Sun NA, Do Hoon KIM
  • Multi-brand radiating element
    Patent number: 10186772
    Abstract: The present invention relates to a multi-band radiating element comprising: a first high frequency radiating element formed on the upper surface of a substrate; one or more first low frequency parasitic elements formed on the upper surface of the substrate and formed at a predetermined distance from the first high frequency radiating element in the direction of the outer edge of the substrate; one or more second low frequency parasitic elements formed on the upper surface of the substrate and formed at a predetermined distance from the first high frequency radiating element in the direction of the outer edge of the substrate; a second high frequency radiating element formed on the bottom surface of the substrate; and a reflector formed at a predetermined distance from the bottom surface of the substrate.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: January 22, 2019
    Assignee: GAMMANU CO., LTD.
    Inventors: Su Won Lee, Sang Geun Na, Do Sun Na
  • MULTI-BAND RADIATING ELEMENT
    Publication number: 20180040956
    Abstract: The present invention relates to a multi-band radiating element comprising: a first high frequency radiating element formed on the upper surface of a substrate; one or more first low frequency parasitic elements formed on the upper surface of the substrate and formed at a predetermined distance from the first high frequency radiating element in the direction of the outer edge of the substrate; one or more second low frequency parasitic elements formed on the upper surface of the substrate and formed at a predetermined distance from the first high frequency radiating element in the direction of the outer edge of the substrate; a second high frequency radiating element formed on the bottom surface of the substrate; and a reflector formed at a predetermined distance from the bottom surface of the substrate.
    Type: Application
    Filed: April 28, 2015
    Publication date: February 8, 2018
    Applicant: Gammanu Co., Ltd.
    Inventors: Su Won LEE, Sang Geun NA, Do Sun NA