Patents by Inventor Hidetoshi Hagiwara

Hidetoshi Hagiwara 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).

  • Surface-mounted antenna and communications apparatus comprising same
    Patent number: 6873291
    Abstract: A surface-mounted antenna comprising a substrate made of a high-dielectric constant material having a dielectric constant ?r of 6 or more, a ribbon-shaped radiation electrode having one end which is grounded and the other end which is open, a grounding electrode connected or capacitance-coupled to one end of the radiation electrode, and a current-feeding electrode in a portal shape formed on a side surface separate from the radiation electrode with a gap; the current-feeding electrode having a current-feeding portion at one end, a grounding portion at the other end, and a portion substantially in alignment with the radiation electrode between them; and the length of the aligning portion, a gap width or a portal shape being able to be properly set such that capacitance owned by the current-feeding electrode and inductance can be adjusted for easily achieving impedance matching.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: March 29, 2005
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hiroyuki Aoyama, Keiko Kikuchi, Yasunori Takaki, Hidetoshi Hagiwara
  • Surface-mounted antenna and communications apparatus comprising same
    Publication number: 20030006936
    Abstract: A surface-mounted antenna comprising a substrate made of a high-dielectric constant material having a dielectric constant ∈r of 6 or more, a ribbon-shaped radiation electrode having one end which is grounded and the other end which is open, a grounding electrode connected or capacitance-coupled to one end of the radiation electrode, and a current-feeding electrode in a portal shape formed on a side surface separate from the radiation electrode with a gap; the current-feeding electrode having a current-feeding portion at one end, a grounding portion at the other end, and a portion substantially in alignment with the radiation electrode between them; and the length of the aligning portion, a gap width or a portal shape being able to be properly set such that capacitance owned by the current-feeding electrode and inductance can be adjusted for easily achieving impedance matching.
    Type: Application
    Filed: June 14, 2002
    Publication date: January 9, 2003
    Applicant: HITACHI METALS, LTD.
    Inventors: Hiroyuki Aoyama, Keiko Kikuchi, Yasunori Takaki, Hidetoshi Hagiwara