Patents by Inventor Yasunori Takaki

Yasunori Takaki 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).

  • Patent number: 7903036
    Abstract: To realize an antenna device that can operate in wide bands (in a plurality of frequency bands) and can achieve an excellent antenna gain and maintain non-directivity of vertically polarized waves in each band in a space-saving manner, and also to provide a technique capable of maintaining mechanical reliability of the antenna device.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: March 8, 2011
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yasunori Takaki, Toshiyuki Wada, Hiroyuki Aoyama
  • Patent number: 7679569
    Abstract: An antenna device is provided which is capable of saving space, of operating in wide bands (in a multi-band) and of achieving an excellent gain and maintaining non-directivity of vertically polarized waves in each band. The antenna device has a conductor antenna. An end portion 111a on one end side of the conductor antenna is mounted as a power feeding section and an end portion 112a on the other end side of the conductor antenna 110 is mounted as an open end terminal. The antenna device also has a base body made of an insulating material which is coupled to one end and other end of the conductor antenna. The base band is coupled in a place where an electric field strength of the conductor antenna having a folded-back portion is increased, thus achieving the wideband and high-gain antenna device.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: March 16, 2010
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yasunori Takaki, Hiroyuki Aoyama, Hiroto Ideno
  • Publication number: 20090167614
    Abstract: [Problems] To realize an antenna device that can operate in wide bands (in a plurality of frequency bands) and can achieve an excellent antenna gain and maintain non-directivity of vertically polarized waves in each band in a space-saving manner, and also to provide a technique capable of maintaining mechanical reliability of the antenna device.
    Type: Application
    Filed: May 30, 2007
    Publication date: July 2, 2009
    Inventors: Yasunori Takaki, Toshiyuki Wada, Hiroyuki Aoyama
  • Publication number: 20070290944
    Abstract: An antenna device is provided which is capable of saving space, of operating in wide bands (in a multi-band) and of achieving an excellent gain and maintaining non-directivity of vertically polarized waves in each band. The antenna device has a conductor antenna. An end portion 111a on one end side of the conductor antenna is mounted as a power feeding section and an end portion 112a on the other end side of the conductor antenna 110 is mounted as an open end terminal. The antenna device also has a base body made of an insulating material which is coupled to one end and other end of the conductor antenna. The base band is coupled in a place where an electric field strength of the conductor antenna having a folded-back portion is increased, thus achieving the wideband and high-gain antenna device.
    Type: Application
    Filed: March 22, 2007
    Publication date: December 20, 2007
    Applicant: HITACHI METALS, LTD.
    Inventors: Yasunori Takaki, Hiroyuki Aoyama, Hiroto Ideno
  • Patent number: 7148851
    Abstract: An antenna device comprising (a) a mounting substrate having a ground portion and a non-ground portion, (b) a chip antenna mounted onto said non-ground portion, which comprises a substrate, a first radiation electrode formed on said substrate, a power-supplying electrode connected or not connected to the other end of said first radiation electrode, and a terminal electrode connected or not connected to one end of said first radiation electrode, and (c) at least one second radiation electrode formed in a conductor pattern on said non-ground portion, said second radiation electrode having one end connected or not connected to said terminal electrode and the other end which is an open end, and a cavity existing between said chip antenna and/or said second radiation electrode and said ground portion.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: December 12, 2006
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yasunori Takaki, Hiroyuki Aoyama
  • Patent number: 7061434
    Abstract: According to the present invention, a surface mount type chip antenna comprises a base made of a dielectric, magnetic substance or mixture thereof, at least one terminal portion provided on the mounted face of the base, a concave provided in the mounted face of the base except in the terminal portion, and at least one conductive wire wound around the base. Another feature is a surface mount type antenna device comprising a surface mount type chip antenna arranged in the vicinity of metallic functional components, and filter circuits connected to the power source side terminal of the metallic functional components.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: June 13, 2006
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hiroyuki Aoyama, Yasunori Takaki
  • Publication number: 20050078038
    Abstract: An antenna device comprising (a) a mounting substrate having a ground portion and a non-ground portion, (b) a chip antenna mounted onto said non-ground portion, which comprises a substrate, a first radiation electrode formed on said substrate, a power-supplying electrode connected or not connected to the other end of said first radiation electrode, and a terminal electrode connected or not connected to one end of said first radiation electrode, and (c) at least one second radiation electrode formed in a conductor pattern on said non-ground portion, said second radiation electrode having one end connected or not connected to said terminal electrode and the other end which is an open end, and a cavity existing between said chip antenna and/or said second radiation electrode and said ground portion.
    Type: Application
    Filed: August 6, 2004
    Publication date: April 14, 2005
    Inventors: Yasunori Takaki, Hiroyuki Aoyama
  • 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
  • Publication number: 20040183733
    Abstract: According to the present invention, a surface mount type chip antenna comprises a base made of a dielectric, magnetic substance or mixture thereof, at least one terminal portion provided on the mounted face of the base, a concave provided in the mounted face of the base except in the terminal portion, and at least one conductive wire wound around the base. Another feature is a surface mount type antenna device comprising a surface mount type chip antenna arranged in the vicinity of metallic functional components, and filter circuits connected to the power source side terminal of the metallic functional components.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 23, 2004
    Inventors: Hiroyuki Aoyama, Yasunori Takaki
  • 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