Patents by Inventor Sang-Wook Bang

Sang-Wook Bang 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).

  • Signal process apparatus for phase-shifting N number of signals inputted thereto
    Patent number: 6504450
    Abstract: A signal process apparatus of the present invention is capable of shifting phases of signals inputted thereto and attenuating the signals, simultaneously. The signal process apparatus includes a dielectric member provided with a first and a second portions, a plurality of transmission lines positioned opposite the dielectric member for transmitting the signals and means for rotating the dielectric member to an axis perpendicular to a surface of the dielectric member which is parallel to the transmission lines. In the signal process apparatus, a dielectric constant of the first portion is different from that of the second portion. Each of the signals is inputted to a corresponding transmission line. After each of the signals is passing through the corresponding transmission line, it has a phase shifted by rotating the dielectric member.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: January 7, 2003
    Assignee: KMW Inc.
    Inventors: Duk-Yong Kim, Yoon-Bae Lee, Gyu-Sang Hwang, In-Young Lee, Sang-Wook Bang, Chang-Yun Seo, Kyoung-Ho Lee, Sung-Soo Lee, Yoon-Yong Kim, Taek-Dong Kim
  • Signal process apparatus for phase-shifting N number of signals inputted thereto
    Publication number: 20020030560
    Abstract: A signal process apparatus of the present invention is capable of shifting phases of signals inputted thereto and attenuating the signals, simultaneously. The signal process apparatus includes a dielectric member provided with a first and a second portions, a plurality of transmission lines positioned opposite the dielectric member for transmitting the signals and means for rotating the dielectric member to an axis perpendicular to a surface of the dielectric member which is parallel to the transmission lines. In the signal process apparatus, a dielectric constant of the first portion is different from that of the second portion. Each of the signals is inputted to a corresponding transmission line. After each of the signals is passing through the corresponding transmission line, it has a phase shifted by rotating the dielectric member.
    Type: Application
    Filed: March 6, 2001
    Publication date: March 14, 2002
    Applicant: KMW Inc.
    Inventors: Duk-Yong Kim, Yoon-Bae Lee, Gyu-Sang Hwang, In-Young Lee, Sang-Wook Bang, Chang-Yun Seo, Kyoung-Ho Lee, Sung-Soo Lee, Yoon-Yong Kim, Taek-Dong Kim