Patents by Inventor Hidetsugu Sakou

Hidetsugu Sakou 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).

  • End-fed sleeve dipole antenna comprising a ¾-wave transformer
    Patent number: 8593363
    Abstract: An end-fed sleeve dipole is provided herein with improved impedance match and increased bandwidth by incorporating a ¾-wavelength transformer in the antenna design. The ¾-wavelength transformer is compatible with a number of different choking schemes, including but not limited to, a single ¼-wave choke sleeve, a single ¼-wave choke sleeve with additional ferrite beads, and two or more ¼-wave choke sleeves with or without ferrite beads. In some embodiments, one or more shunt resonators may be used to provide additional impedance compensation.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: November 26, 2013
    Assignee: TDK Corporation
    Inventors: James McLean, Kunio Yata, Robert Sutton, Hidetsugu Sakou, Nobutaka Misawa
  • End-Fed Sleeve Dipole Antenna Comprising a 3/4-Wave Transformer
    Publication number: 20120194401
    Abstract: An end-fed sleeve dipole is provided herein with improved impedance match and increased bandwidth by incorporating a ¾-wavelength transformer in the antenna design. The ¾-wavelength transformer is compatible with a number of different choking schemes, including but not limited to, a single ¼-wave choke sleeve, a single ¼-wave choke sleeve with additional ferrite beads, and two or more ¼-wave choke sleeves with or without ferrite beads. In some embodiments, one or more shunt resonators may be used to provide additional impedance compensation.
    Type: Application
    Filed: January 27, 2011
    Publication date: August 2, 2012
    Applicant: TDK CORPORATION
    Inventors: James McLean, Kunio Yata, Robert Sutton, Hidetsugu Sakou, Nobutaka Misawa