Patents by Inventor Sung-Jun Heo

Sung-Jun Heo 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).

  • Electrical loop antenna with unidirectional and uniform current radiation source
    Patent number: 7505008
    Abstract: Provided is an antenna for a Radio Frequency Identification (RFID) reader using an electrical loop. It includes an upper metal plate which functions as a radiator; a lower metal plate which is disposed apart from the upper metal plate by a predetermined distance and functions as a radiator; a ground plate disposed apart from the lower metal plate by a predetermined distance; and a feeding probe disposed at the center of the upper and lower metal plates. The antenna can perform radiation parallel to the earth's surface including other directions. Therefore, it is suitable for an RFID reader which recognizes an RFID tag attached in parallel to the earth's surface. The electrical loop antenna can control impedance matching, resonance frequency, antenna gain, and radiation pattern according to the distance between metal plates, size of the metal plates, thickness of a feeding probe, and how the metal plates are arranged.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: March 17, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chan-Soo Shin, Won-Kyu Choi, Hae-Won Son, Gil-Young Choi, Cheol-Sig Pyo, Jong-Suk Chae, Han-Phil Rhyu, Sung-Jun Heo, Byung-Je Lee
  • Electrical loop antenna with unidirectional and uniform current radiation source
    Publication number: 20070080879
    Abstract: Provided is an antenna for a Radio Frequency Identification (RFID) reader using an electrical loop. It includes an upper metal plate which functions as a radiator; a lower metal plate which is disposed apart from the upper metal plate by a predetermined distance and functions as a radiator; a ground plate disposed apart from the lower metal plate by a predetermined distance; and a feeding probe disposed at the center of the upper and lower metal plates. The antenna can perform radiation parallel to the earth's surface including other directions. Therefore, it is suitable for an RFID reader which recognizes an RFID tag attached in parallel to the earth's surface. The electrical loop antenna can control impedance matching, resonance frequency, antenna gain, and radiation pattern according to the distance between metal plates, size of the metal plates, thickness of a feeding probe, and how the metal plates are arranged.
    Type: Application
    Filed: September 25, 2006
    Publication date: April 12, 2007
    Inventors: Chan-Soo Shin, Won-Kyu Choi, Hae-Won Son, Gil-Young Choi, Cheol-Sig Pyo, Jong-Suk Chae, Han-Phil Rhyu, Sung-Jun Heo, Byung-Je Lee