Patents by Inventor Geonho Jang

Geonho Jang 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).

  • Band-pass filter based on CRLH resonator and duplexer using the same
    Patent number: 8729980
    Abstract: A CRLH resonator-based band-pass filter includes at least two CRLH resonators. The resonators are connected by capacitive coupling. The resonators includes a microstrip line having input and output ports. The microstrip line includes a first interdigital line serial-connected to the input port, a second interdigital line serial-connected to the output port, a connection line connecting the first and second interdigital lines, and an inductor line parallel-connected to the connection line and provided with a grounded end.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: May 20, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong-Ho Kim, Jae-Ick Choi, Sungtek Kahng, Geonho Jang
  • BANDPASS FILTER AND ELECTRONIC DEVICE
    Publication number: 20120256703
    Abstract: A bandpass filter includes resonator coupling line on which a plurality of composite right/left-handed (CRLH) resonators are disposed. The plurality of CRLH resonators are inductively coupled with each other. The design variables can be increased through inductive coupling in the resonance period. Also, the skirt characteristics and the isolation can be improved.
    Type: Application
    Filed: November 25, 2011
    Publication date: October 11, 2012
    Applicants: IUCF-HYU ( Industry-University Cooperation Foundation Hanyang University, Electronics and Telecommunications Research Institute
    Inventors: Ju Yeon HONG, Jae Ick CHOI, Sungtek KAHNG, Geonho JANG, Boram LEE, Jaehoon CHOI
  • META-MATERIAL MIMO ANTENNA
    Publication number: 20120235867
    Abstract: A meta-material MIMO antenna is disclosed, wherein the meta-material MIMO antenna includes a substrate; a first top radiator formed at one side of top surface of the substrate, and including an inner radiator and an outer radiator discrete from the inner radiator to encompass the inner radiator from outside; a second top radiator symmetrically formed against the first top radiator and formed on the other side of the top surface of the substrate; a first bottom radiator electrically connected to the first top radiator and formed on one side of bottom surface of the substrate; a second bottom radiator symmetrically formed against the first bottom radiator and formed on the other side of the bottom surface of the substrate; and a coupler remover interposed between the first and second bottom radiators, whereby the antenna can be miniaturized to enhance a high isolation.
    Type: Application
    Filed: March 14, 2012
    Publication date: September 20, 2012
    Applicants: Incheon University Industry Academic Cooperation Foundation, LG Innotek Co., Ltd.
    Inventors: Jongguk Kim, Jeonghoon Cho, Sungtek Kahng, Jakwon Ku, Kyungsuk Kim, Geonho Jang, Seongryong Yoo
  • BAND-PASS FILTER BASED ON CRLH RESONATOR AND DUPLEXER USING THE SAME
    Publication number: 20110248793
    Abstract: A CRLH resonator-based band-pass filter includes at least two CRLH resonators. The resonators are connected by capacitive coupling. The resonators includes a microstrip line having input and output ports. The microstrip line includes a first interdigital line serial-connected to the input port, a second interdigital line serial-connected to the output port, a connection line connecting the first and second interdigital lines, and an inductor line parallel-connected to the connection line and provided with a grounded end.
    Type: Application
    Filed: November 3, 2010
    Publication date: October 13, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Dong-Ho Kim, Jae-Ick Choi, Sungtek Kahng, Geonho Jang