Patents by Inventor Kozo Egashira

Kozo Egashira 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).

  • Multielement planar antenna
    Patent number: 6917332
    Abstract: A multielement planar antenna has a substrate, a plurality of antenna element pairs disposed on a first main surface of said substrate, each of the antenna element pairs including first and second antenna elements each made of a circuit conductor, a metal conductor disposed on a second main surface of the substrate, and a slot line defined in the metal conductor. Each of the antenna element pairs has a microstrip line interconnecting the first and second antenna elements. The slot line crosses the microstrip lines and is electromagnetically coupled to the microstrip lines for feeding the first and second antenna elements. The slot line is fed at its central area by a microstrip line or a coplanar line.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: July 12, 2005
    Assignees: Nihon Dempa Kogyo Co., Ltd.
    Inventors: Masayoshi Aikawa, Eisuke Nishiyama, Kozo Egashira, Fumio Asamura, Takeo Oita
  • Multielement planar antenna
    Publication number: 20040041732
    Abstract: A multielement planar antenna has a substrate, a plurality of antenna element pairs disposed on a first main surface of said substrate, each of the antenna element pairs including first and second antenna elements each made of a circuit conductor, a metal conductor disposed on a second main surface of the substrate, and a slot line defined in the metal conductor. Each of the antenna element pairs has a microstrip line interconnecting the first and second antenna elements. The slot line crosses the microstrip lines and is electromagnetically coupled to the microstrip lines for feeding the first and second antenna elements. The slot line is fed at its central area by a microstrip line or a coplanar line.
    Type: Application
    Filed: October 2, 2002
    Publication date: March 4, 2004
    Inventors: Masayoshi Aikawa, Eisuke Nishiyama, Kozo Egashira, Fumio Asamura, Takeo Oita