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).

  • Publication number: 20210359415
    Abstract: A planar antenna includes a planar radiation conductor 11, a common ground conductor 32, a first strip conductor 21 located between the planar radiation conductor 11 and the common ground conductor 32 and extending in a direction in parallel to a first axis in a first right rectangular coordinate system including first, second, and third axes, a second strip conductor 22 located between the planar radiation conductor and the common ground conductor and extending in a direction orthogonal to a direction of extension of the first strip conductor, and at least one pair of passive conductors 12 to 15 each including a side at an angle of 45±3° or ?45±3° with respect to the first axis and opposed to the planar radiation conductor.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 18, 2021
    Inventors: Yasunori TAKAKI, Kenji HAYASHI, Masato ENOKI
  • Publication number: 20210044018
    Abstract: A multi-band antenna is capable of transmitting/receiving electromagnetic waves at least in a first wavelength band of a first center wavelength ?1 and a second wavelength band of a second center wavelength ?2, which is shorter than the first center wavelength ?1, the multi-band antenna including at least one antenna unit, wherein the at least one antenna unit includes: a first radiation conductor; and a first ground conductor spaced apart from the first radiation conductor with a dielectric having a relative dielectric constant sr interposed therebetween, wherein: the first radiation conductor and the first ground conductor each have a planar shape having a pair of opposing first sides; and a distance Lrf1 between the pair of opposing first sides of the first radiation conductor and a distance Lg1 between the pair of opposing sides of the first ground conductor satisfy expressions below: 0.2?1/?r1/2?Lrf1?0.7?1/?r1/2 ; and 0.7?2/?r1/2?Lg1?1.75?2/?r1/2.
    Type: Application
    Filed: August 4, 2020
    Publication date: February 11, 2021
    Inventors: Yasunori TAKAKI, Masato ENOKI
  • Publication number: 20200373666
    Abstract: A multiband antenna includes: a radiating conductor including a rectangular-shaped first slit extending along a second axis direction of a first right-hand orthogonal coordinate system having a first axis direction, the second axis direction, and a third axis direction; a ground conductor which is spaced apart from the radiating conductor by a predetermined interval along the third axis direction; and a first strip conductor being positioned between the radiating conductor and the ground conductor, and extending along the first axis direction. An end portion of the first strip conductor overlaps the first slit when viewed along the third axis direction.
    Type: Application
    Filed: February 12, 2019
    Publication date: November 26, 2020
    Inventors: Yasunori TAKAKI, Kenji HAYASHI
  • Publication number: 20200203851
    Abstract: A multiaxial antenna includes an antenna unit, the antenna unit including a planar antenna which includes a planar radiation conductor and a ground conductor, the planar radiation conductor and the ground conductor being spaced away from each other in a third axis direction in a first right-handed Cartesian coordinate system which has first, second and third axes, and at least one linear antenna which is spaced away from the planar antenna in a first axis direction, the linear antenna including one or two linear radiation conductors extending in a second axis direction.
    Type: Application
    Filed: July 31, 2018
    Publication date: June 25, 2020
    Inventors: Yasunori TAKAKI, Kenji HAYASHI
  • Publication number: 20200106194
    Abstract: A planar array antenna is provided which can be used in broader bands. The planar array antenna includes a plurality of unit cells 50 which are one-dimensionally or two-dimensionally arranged. Each of the unit cells 50 includes a radiation portion 51 which includes a radiation conductor 11 and a first ground conductor layer 13 spaced away from the radiation conductor 11 and having a first slot 13c, and a power supply portion 52 which includes a strip conductor 14. The strip conductor 14 has a first end portion 14c which is supplied with an electric power from an external device and a second end portion 14d which is spaced away from the first end portion in a longitudinal direction. The distance between the first end portion 14c and the first ground conductor layer 13 is different from the distance between the second end portion 14d and the first ground conductor layer 13.
    Type: Application
    Filed: May 25, 2018
    Publication date: April 2, 2020
    Inventor: Yasunori TAKAKI
  • Publication number: 20200091619
    Abstract: A planar array antenna includes a plurality of unit cells which are one-dimensionally or two-dimensionally arranged. Each of the unit cells 50 includes a radiation portion 51 which includes a radiation conductor 11, a first ground conductor layer 13 spaced away from the radiation conductor 11 and having a first slot 13c, and a planar conductor layer 12 located between the radiation conductor 11 and the first ground conductor layer 13 and spaced away from the radiation conductor 11 and the first ground conductor layer 13, the planar conductor layer 12 having a second slot 12c, and a power supply portion 52 which includes a strip conductor 14 and a second ground conductor layer 15 spaced away from the strip conductor 14, the strip conductor 14 being located between the first ground conductor layer 13 and the second ground conductor layer 15.
    Type: Application
    Filed: May 15, 2018
    Publication date: March 19, 2020
    Inventor: Yasunori TAKAKI
  • Patent number: 10545198
    Abstract: A magnetic sensor including: a substrate with a main surface; at least two magnetoresistive effect elements formed on the main surface and connected to a power terminal of a bridge circuit; at least two magnetoresistive effect elements formed on the main surface and connected to a ground terminal of the bridge circuit; a first region in which one of the at least two magnetoresistive effect elements connected to the power terminal and one of the at least two magnetoresistive effect elements connected to the ground terminal are disposed; a second region in which another of the at least two magnetoresistive effect elements connected to the power terminal and another of the at least two magnetoresistive effect elements connected to the ground terminal are disposed; and a bias coil including a first bias application part for applying a bias magnetic field to the first region and a second bias application part for applying a bias magnetic field to the second region.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: January 28, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Yasunori Takaki, Yasunori Abe, Makoto Kawakami
  • Publication number: 20190245275
    Abstract: A planar array antenna includes: a radiation section 51 including a plurality of radiation conductors 30 and a first ground conductor layer 20, and a power supply section 52 including a plurality of strip conductors 10 and a second ground conductor layer 60, wherein the strip conductors 10 are arranged so as to correspond to the radiation conductors 30 between the first ground conductor layer 20 and the second ground conductor layer 60; and the first ground conductor layer 20 is located between the radiation conductors 30 and the corresponding strip conductors 10, and includes a plurality of slots 21 extending in a direction that crosses a direction in which the strip conductor 10 extends and a groove or at least one aperture 22 located between adjacent two of the slots 21.
    Type: Application
    Filed: July 25, 2017
    Publication date: August 8, 2019
    Applicant: HITACHI METALS, LTD.
    Inventors: Kenji HAYASHI, Yasunori TAKAKI
  • Publication number: 20180335483
    Abstract: A magnetic sensor including: a substrate with a main surface; at least two magnetoresistive effect elements formed on the main surface and connected to a power terminal of a bridge circuit; at least two magnetoresistive effect elements formed on the main surface and connected to a ground terminal of the bridge circuit; a first region in which one of the at least two magnetoresistive effect elements connected to the power terminal and one of the at least two magnetoresistive effect elements connected to the ground terminal are disposed; a second region in which another of the at least two magnetoresistive effect elements connected to the power terminal and another of the at least two magnetoresistive effect elements connected to the ground terminal are disposed; and a bias coil including a first bias application part for applying a bias magnetic field to the first region and a second bias application part for applying a bias magnetic field to the second region.
    Type: Application
    Filed: November 18, 2015
    Publication date: November 22, 2018
    Applicant: HITACHI METALS, LTD.
    Inventors: Yasunori TAKAKI, Yasunori ABE, Makoto KAWAKAMI
  • Patent number: 9964602
    Abstract: A magnetic sensor includes: a first current line, a second current line and a third current line that are disposed in parallel to each other in sequence in a width direction and electrically connected in series; and a magnetoresistive effect element disposed under the second current line and extending along a direction of extension of the second current line, the magnetoresistive effect element having an electric resistance that changes by an induced magnetic field generated by current flowing through the first current line, the second current line and the third current line, the following inequality expression (1) being satisfied: Ls/Wg?5??(1) where Ls is a length from an outside of the first current line to an outside of the third current line in a width direction, and Wg is a length in the width direction of the magnetoresistive effect element.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 8, 2018
    Assignee: HITACHI METALS, LTD.
    Inventors: Yasunori Takaki, Makoto Kawakami, Yasunori Abe
  • Patent number: 9891293
    Abstract: A magnetic sensor device that includes an annular magnetic body, a coil wound around the magnetic body, the coil configured to apply a magnetic field that rotates 360 degrees by a half way point in a peripheral direction of the magnetic body, and a magnetoresistance effect element arranged at a center of the annular magnetic body and including a fixed layer having a magnetization direction fixed in a direction of the magnetic field to be measured. The magnetic body includes a tapered portion located at a position where a line passing through the center of the magnetic body and extending in a shorter-axis direction intersects the magnetic body, the tapered portion having a narrowed portion narrowed down toward the magnetoresistance effect element, and having dumbbell-shaped inner and outer peripheries, and the narrowed portion having a width reduced toward the magnetoresistance effect element.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: February 13, 2018
    Assignee: HITACHI METALS, LTD.
    Inventors: Makoto Kawakami, Yasunori Takaki, Yasunori Abe, Yasuhito Takeuchi
  • Patent number: 9678177
    Abstract: A magnetic sensor device comprises a thin film first magnetic body provided with a magnetic path convergence/divergence section arranged on a predetermined axis, and at least a pair of wing-shaped sections extending from the magnetic path convergence/divergence section toward the opposite sides of the axis, a thin film second magnetic body provided with a magnetic path convergence/divergence section arranged on the predetermined axis to be spaced from the magnetic path convergence/divergence section of the first magnetic body, at least a pair of wing-shaped sections extending from this magnetic path convergence divergence toward the opposite sides of the axis, a first coil wound around the first magnetic body, a second coil wound around the second magnetic body, and a magnetoresistance effect element arranged between the magnetic path convergence/divergence section of the first magnetic body and the of the second magnetic body, wherein the first coil applies a magnetic field to a magnetic path of the first ma
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 13, 2017
    Assignee: HITACHI METALS, LTD.
    Inventors: Makoto Kawakami, Yasunori Takaki, Yasunori Abe, Yasuhito Takeuchi
  • Publication number: 20170097395
    Abstract: A magnetic sensor device includes a thin film first magnetic body provided with a magnetic path convergence/divergence section arranged on a predetermined axis, and at least a pair of wing-shaped sections extending from the magnetic path convergence/divergence section toward the opposite sides of said axis, a thin film second magnetic body provided with a magnetic path convergence/divergence section arranged on the predetermined axis to be spaced from the magnetic path convergence/divergence section of the first magnetic body, at least a pair of wing-shaped sections extending from this magnetic path convergence divergence toward the opposite sides of the axis, a first coil wound around the first magnetic body, a second coil wound around the second magnetic body, and a magnetoresistance effect element arranged between the magnetic path convergence/divergence section of the first magnetic body and the of the second magnetic body.
    Type: Application
    Filed: November 4, 2016
    Publication date: April 6, 2017
    Applicant: HITACHI METALS, LTD.
    Inventors: Makoto KAWAKAMI, Yasunori TAKAKI, Yasunori ABE, Yasuhito TAKEUCHI
  • Patent number: 9594130
    Abstract: Provided is a magnetic sensor device capable of attenuating the intensity of the magnetic field to be applied to the magnetic sensor. A magnetic sensor device includes a magnetic sensor element which detects the intensity of a magnetic field in a predetermined detection axis direction, and a magnetic field attenuation body which includes a first magnetic field attenuation unit and a second magnetic field attenuation unit, each of the attenuation units having a surface and the surfaces being opposed to each other with the magnetic sensor element therebetween.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: March 14, 2017
    Assignee: HITACHI METALS, LTD.
    Inventors: Makoto Kawakami, Yasunori Takaki
  • Publication number: 20160274196
    Abstract: A magnetic sensor includes: a first current line, a second current line and a third current line that are disposed in parallel to each other in sequence in a width direction and electrically connected in series; and a magnetoresistive effect element disposed under the second current line and extending along a direction of extension of the second current line, the magnetoresistive effect element having an electric resistance that changes by an induced magnetic field generated by current flowing through the first current line, the second current line and the third current line, the following inequality expression (1) being satisfied: Ls/Wg?5 ??(1) where Ls is a length from an outside of the first current line to an outside of the third current line in a width direction, and Wg is a length in the width direction of the magnetoresistive effect element.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 22, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Yasunori TAKAKI, Makoto KAWAKAMI, Yasunori ABE
  • Patent number: 9088072
    Abstract: An antenna comprising a laminate of dielectric ceramic layers each provided with electrode patterns, the laminate comprising a first terminal electrode connected to a feed line and a second terminal electrode for grounding on the lower surface, a radiation electrode on the upper surface or on a layer near the upper surface, and a coupling electrode between the lower surface and the radiation electrode; the coupling electrode being connected to the first terminal electrode through via-holes; the radiation electrode being connected to the second terminal electrode through via-holes; and the coupling electrode being partially opposite to the radiation electrode in a lamination direction to form a capacitance-coupling portion.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: July 21, 2015
    Assignee: HITACHI METALS, LTD.
    Inventors: Yasunori Takaki, Akinori Misawa
  • Publication number: 20150097560
    Abstract: Provided is a magnetic sensor device capable of attenuating the intensity of the magnetic field to be applied to the magnetic sensor. A magnetic sensor device includes a magnetic sensor element which detects the intensity of a magnetic field in a predetermined detection axis direction, and a magnetic field attenuation body which includes a first magnetic field attenuation unit and a second magnetic field attenuation unit, each of the attenuation units having a surface and the surfaces being opposed to each other with the magnetic sensor element therebetween.
    Type: Application
    Filed: April 22, 2013
    Publication date: April 9, 2015
    Applicant: HITACHI METALS, LTD.
    Inventors: Makoto Kawakami, Yasunori Takaki
  • Publication number: 20150048819
    Abstract: A magnetic sensor device includes a thin film first magnetic body provided with a magnetic path convergence/divergence section arranged on a predetermined axis, and at least a pair of wing-shaped sections extending from the magnetic path convergence/divergence section toward the opposite sides of said axis, a thin film second magnetic body provided with a magnetic path convergence/divergence section arranged on the predetermined axis to be spaced from the magnetic path convergence/divergence section of the first magnetic body, at least a pair of wing-shaped sections extending from this magnetic path convergence divergence toward the opposite sides of the axis, a first coil wound around the first magnetic body, a second coil wound around the second magnetic body, and a magnetoresistance effect element arranged between the magnetic path convergence/divergence section of the first magnetic body and the of the second magnetic body.
    Type: Application
    Filed: March 13, 2013
    Publication date: February 19, 2015
    Applicant: HITACHI METALS, LTD.
    Inventors: Makoto Kawakami, Yasunori Takaki, Yasunori Abe, Yasuhito Takeuchi
  • Publication number: 20120229345
    Abstract: An antenna comprising a laminate of dielectric ceramic layers each provided with electrode patterns, the laminate comprising a first terminal electrode connected to a feed line and a second terminal electrode for grounding on the lower surface, a radiation electrode on the upper surface or on a layer near the upper surface, and a coupling electrode between the lower surface and the radiation electrode; the coupling electrode being connected to the first terminal electrode through via-holes; the radiation electrode being connected to the second terminal electrode through via-holes; and the coupling electrode being partially opposite to the radiation electrode in a lamination direction to form a capacitance-coupling portion.
    Type: Application
    Filed: November 19, 2010
    Publication date: September 13, 2012
    Applicant: HITACHI METALS, LTD.
    Inventors: Yasunori Takaki, Akinori Misawa
  • 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