Patents by Inventor Toshiki SAYAMA

Toshiki SAYAMA 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: 10931017
    Abstract: An antenna includes a ground plane; a first resonator connected to a feeding point with reference to the ground plane; and a second resonator that is fed power by the first resonator according to an electromagnetic field coupling with no contact. The second resonator includes a first conductor part, and a second conductor part capacitively-coupled to the first conductor part through a gap. A dielectric loss tangent of a substrate part, on which the second resonator is formed, is greater than zero and less than or equal to 0.01.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: February 23, 2021
    Assignee: AGC Inc.
    Inventors: Ryuta Sonoda, Toshiki Sayama, Koji Ikawa
  • Publication number: 20210021051
    Abstract: A slot array antenna includes a dielectric layer, a power feeding unit, a first coplanar waveguide formed in a conductor layer provided on one surface of the dielectric layer, and a second coplanar waveguide formed in the conductor layer, wherein each of the first coplanar waveguide and the second coplanar waveguide includes a first end part connected to a point to which the power feeding unit is connected or situated in proximity and at least one second end part connected to at least one slot formed in the conductor layer.
    Type: Application
    Filed: October 6, 2020
    Publication date: January 21, 2021
    Applicant: AGC Inc.
    Inventors: Qiang CHEN, Osamu KAGAYA, Toshiki SAYAMA, Takeshi MOTEGI
  • Publication number: 20200220254
    Abstract: An antenna includes a first feeding portion, a second feeding portion, and a loop element including a first end and a second end, the first end being connected to the first feeding portion, and the second end being connected to the second feeding portion, wherein the loop element has a first element portion and a second element portion, which appear to face each other in a vertical direction in an elevation view as seen in a direction parallel with a horizontal plane, and wherein a first gap is provided in a middle of the first element portion, and a second gap is provided in a middle of the second element portion.
    Type: Application
    Filed: March 18, 2020
    Publication date: July 9, 2020
    Applicant: AGC Inc.
    Inventor: Toshiki SAYAMA
  • Publication number: 20200036078
    Abstract: A vehicle antenna arranged on a window glass for vehicle includes an element portion having a shape of a crank and being formed by a first element, a second element and a third element; and a feeding portion configured to feed power to the element portion. The first element has a first upper end portion and a first lower end portion, and extends in an up-down direction of the window glass. The second element has a second upper end portion and a second lower end portion, and extends in the up-down direction of the window glass. The third element extends between the first lower end portion and the second upper end portion. A first distance between the first lower end portion and the window glass is different from a second distance between the second upper end portion and the window glass.
    Type: Application
    Filed: October 3, 2019
    Publication date: January 30, 2020
    Applicant: AGC Inc.
    Inventor: Toshiki SAYAMA
  • Patent number: 10312589
    Abstract: An antenna directivity control system includes an antenna including a plurality of antenna elements, feeding points for the plurality of antenna elements being mutually different; and a controller for controlling weight for each of the plurality of antenna elements, wherein each of the plurality of antenna elements includes a feed element connected to the feed point, and a radiating element that functions, upon power being fed by establishing electromagnetic field coupling with the feed element, as a radiating conductor, and wherein the controller controls a directivity of the antenna by adjusting an amplitude of a signal at each of the feeding points.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: June 4, 2019
    Assignee: AGC Inc.
    Inventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
  • Patent number: 10283869
    Abstract: A MIMO antenna is provided that includes a ground plane, and a plurality of dipole antenna elements that are arranged in the vicinity of the ground plane. Each of the plurality of dipole antenna elements includes a radiating element including a conductor portion extending along an outer edge portion of the ground plane, and a feeding portion that feeds the radiating element.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: May 7, 2019
    Assignee: AGC Inc.
    Inventors: Ryuta Sonoda, Koji Ikawa, Toshiki Sayama
  • Patent number: 10270161
    Abstract: An antenna device includes a feeding element connected to a feed point, and a radiating element disposed at a distance from the feeding element. The feeding element is coupled with the radiating element by electromagnetic field coupling to feed the radiating element so that the radiating element functions as a radiating conductor.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: April 23, 2019
    Assignee: AGC Inc.
    Inventors: Ryuta Sonoda, Koji Ikawa, Toshiki Sayama
  • Patent number: 10249936
    Abstract: An antenna device includes a ground plane; a first resonator extending in a direction at a distance from the ground plane and connected to a feeding point; and a second resonator arranged at a distance from the first resonator. The ground plane includes an edge portion formed along the second resonator, with a resonance current being formed on the first resonator and the ground plane. The second resonator is configured to function as a radiation conductor by resonance of the first resonator. A tip portion of the first resonator is located near a metallic part. The second resonator has a plurality of electrical lengths of differing resonance frequencies.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: April 2, 2019
    Assignee: AGC Inc.
    Inventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
  • Patent number: 10205232
    Abstract: A multi-antenna includes a ground plane; a first feeding point; a second feeding point that is different from the first feeding point; a first feed element that is connected to the first feeding point; a second feed element that is connected to the second feeding point, a cancellation electric current being generated in the second feed element; and a radiating element that functions as a radiation conductor when power is supplied by establishing electromagnetic field coupling with the first feed element and the second feed element.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: February 12, 2019
    Assignee: AGC Inc.
    Inventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
  • Publication number: 20190044239
    Abstract: An antenna includes a ground plane; a first resonator connected to a feeding point with reference to the ground plane; and a second resonator that is fed power by the first resonator according to an electromagnetic field coupling with no contact. The second resonator includes a first conductor part, and a second conductor part capacitively-coupled to the first conductor part through a gap. A dielectric loss tangent of a substrate part, on which the second resonator is formed, is greater than zero and less than or equal to 0.01.
    Type: Application
    Filed: October 11, 2018
    Publication date: February 7, 2019
    Applicant: AGC Inc.
    Inventors: Ryuta SONODA, Toshiki SAYAMA, Koji IKAWA
  • Publication number: 20180191063
    Abstract: An antenna structure includes a radiating element; a power feeding element configured to feed power to the radiating element in a noncontact manner; a backlight chassis, on which a light source for generating light is attached, a liquid crystal panel being irradiated with the light; and a transmission line conductably connected to the backlight chassis, the power feeding element being connected to an end of the transmission line.
    Type: Application
    Filed: February 26, 2018
    Publication date: July 5, 2018
    Applicant: Asahi Glass Company, Limited
    Inventors: Ryuta SONODA, Koji Ikawa, Toshiki Sayama
  • Patent number: 9905919
    Abstract: An antenna includes a feeding element connected to a feeding point, a first radiating element that is spaced apart from the feeding element and is coupled to the feeding element through electromagnetic field coupling, a second radiating element that is spaced apart from the feeding element and is coupled to the feeding element through electromagnetic field coupling, a first control element that is connected to the feeding element via a first impedance variable unit, and a second control element that is connected to the feeding element via a second impedance variable unit, and a control unit that controls the first impedance variable unit to adjust the connection between the feeding element and the first control element and controls the second impedance variable unit to adjust the connection between the feeding element and the second control element.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: February 27, 2018
    Assignee: Ashai Glass Company, Limited
    Inventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
  • Patent number: 9711855
    Abstract: A multiband antenna includes a feeding element connected to a feeding point, a radiating element functioning as a radiating conductor, the radiating element being positioned apart from the feeding element and fed with electric power by electromagnetically coupling to the feeding element, a ground plane, and a non-feeding element being positioned close to the radiating element and connected to the ground plane via a reactance element. The reactance element has a reactance that causes the multiband antenna to match with a frequency other than a resonance frequency of a resonance mode of the radiating element.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: July 18, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Ryuta Sonoda, Koji Ikawa, Toshiki Sayama
  • Publication number: 20170194692
    Abstract: An antenna device includes a ground plane; a first resonator extending in a direction at a distance from the ground plane and connected to a feeding point; and a second resonator arranged at a distance from the first resonator. The ground plane includes an edge portion formed along the second resonator, with a resonance current being formed on the first resonator and the ground plane. The second resonator is configured to function as a radiation conductor by resonance of the first resonator. A tip portion of the first resonator is located near a metallic part. The second resonator has a plurality of electrical lengths of differing resonance frequencies.
    Type: Application
    Filed: March 24, 2017
    Publication date: July 6, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Toshiki SAYAMA, Ryuta SONODA, Koji IKAWA
  • Publication number: 20170077599
    Abstract: A multi-antenna includes a ground plane; a first feeding point; a second feeding point that is different from the first feeding point; a first feed element that is connected to the first feeding point; a second feed element that is connected to the second feeding point, a cancellation electric current being generated in the second feed element; and a radiating element that functions as a radiation conductor when power is supplied by establishing electromagnetic field coupling with the first feed element and the second feed element.
    Type: Application
    Filed: November 28, 2016
    Publication date: March 16, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
  • Publication number: 20160322702
    Abstract: An antenna directivity control system includes an antenna including a plurality of antenna elements, feeding points for the plurality of antenna elements being mutually different; and a controller for controlling weight for each of the plurality of antenna elements, wherein each of the plurality of antenna elements includes a feed element connected to the feed point, and a radiating element that functions, upon power being fed by establishing electromagnetic field coupling with the feed element, as a radiating conductor, and wherein the controller controls a directivity of the antenna by adjusting an amplitude of a signal at each of the feeding points.
    Type: Application
    Filed: July 12, 2016
    Publication date: November 3, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Toshiki SAYAMA, Ryuta SONODA, Koji IKAWA
  • Publication number: 20160134015
    Abstract: Disclosed is an antenna directivity control system including variable directivity antennas; a measurement unit to measure received signal quality and channel quality of a received signal of the antennas; a selection unit to select, in response to a measured value of the received signal quality and a measured value of the channel quality, a directivity pattern that is to be set for the antennas from directivity pattern candidates that are prepared in advance; and a setting unit to set the selected directivity pattern for the antennas.
    Type: Application
    Filed: January 14, 2016
    Publication date: May 12, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Ryuta SONODA, Koji IKAWA, Kotaro SUENAGA, Toshiki SAYAMA
  • Publication number: 20160087334
    Abstract: An antenna includes a feeding element connected to a feeding point, a first radiating element that is spaced apart from the feeding element and is coupled to the feeding element through electromagnetic field coupling, a second radiating element that is spaced apart from the feeding element and is coupled to the feeding element through electromagnetic field coupling, a first control element that is connected to the feeding element via a first impedance variable unit, and a second control element that is connected to the feeding element via a second impedance variable unit, and a control unit that controls the first impedance variable unit to adjust the connection between the feeding element and the first control element and controls the second impedance variable unit to adjust the connection between the feeding element and the second control element.
    Type: Application
    Filed: December 7, 2015
    Publication date: March 24, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Toshiki SAYAMA, Ryuta SONODA, Koji IKAWA
  • Publication number: 20150303577
    Abstract: A MIMO antenna is provided that includes a ground plane, and a plurality of dipole antenna elements that are arranged in the vicinity of the ground plane. Each of the plurality of dipole antenna elements includes a radiating element including a conductor portion extending along an outer edge portion of the ground plane, and a feeding portion that feeds the radiating element.
    Type: Application
    Filed: July 2, 2015
    Publication date: October 22, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Ryuta SONODA, Koji IKAWA, Toshiki SAYAMA
  • Publication number: 20150288066
    Abstract: A multiband antenna includes a feeding element connected to a feeding point, a radiating element functioning as a radiating conductor, the radiating element being positioned apart from the feeding element and fed with electric power by electromagnetically coupling to the feeding element, a ground plane, and a non-feeding element being positioned close to the radiating element and connected to the ground plane via a reactance element. The reactance element has a reactance that causes the multiband antenna to match with a frequency other than a resonance frequency of a resonance mode of the radiating element.
    Type: Application
    Filed: June 23, 2015
    Publication date: October 8, 2015
    Applicant: Asahi Glass Company, Limited
    Inventors: Ryuta SONODA, Koji IKAWA, Toshiki SAYAMA