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).
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Patent number: 10312589Abstract: 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: GrantFiled: July 12, 2016Date of Patent: June 4, 2019Assignee: AGC Inc.Inventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
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Patent number: 10283869Abstract: 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: GrantFiled: July 2, 2015Date of Patent: May 7, 2019Assignee: AGC Inc.Inventors: Ryuta Sonoda, Koji Ikawa, Toshiki Sayama
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Patent number: 10270161Abstract: 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: GrantFiled: January 20, 2015Date of Patent: April 23, 2019Assignee: AGC Inc.Inventors: Ryuta Sonoda, Koji Ikawa, Toshiki Sayama
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Patent number: 10249936Abstract: 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: GrantFiled: March 24, 2017Date of Patent: April 2, 2019Assignee: AGC Inc.Inventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
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Patent number: 10205232Abstract: 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: GrantFiled: November 28, 2016Date of Patent: February 12, 2019Assignee: AGC Inc.Inventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
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Publication number: 20190044239Abstract: 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: ApplicationFiled: October 11, 2018Publication date: February 7, 2019Applicant: AGC Inc.Inventors: Ryuta SONODA, Toshiki SAYAMA, Koji IKAWA
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Publication number: 20180191063Abstract: 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: ApplicationFiled: February 26, 2018Publication date: July 5, 2018Applicant: Asahi Glass Company, LimitedInventors: Ryuta SONODA, Koji Ikawa, Toshiki Sayama
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Patent number: 9905919Abstract: 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: GrantFiled: December 7, 2015Date of Patent: February 27, 2018Assignee: Ashai Glass Company, LimitedInventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
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Patent number: 9711855Abstract: 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: GrantFiled: June 23, 2015Date of Patent: July 18, 2017Assignee: Asahi Glass Company, LimitedInventors: Ryuta Sonoda, Koji Ikawa, Toshiki Sayama
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Publication number: 20170194692Abstract: 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: ApplicationFiled: March 24, 2017Publication date: July 6, 2017Applicant: Asahi Glass Company, LimitedInventors: Toshiki SAYAMA, Ryuta SONODA, Koji IKAWA
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Publication number: 20170077599Abstract: 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: ApplicationFiled: November 28, 2016Publication date: March 16, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Toshiki Sayama, Ryuta Sonoda, Koji Ikawa
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Publication number: 20160322702Abstract: 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: ApplicationFiled: July 12, 2016Publication date: November 3, 2016Applicant: Asahi Glass Company, LimitedInventors: Toshiki SAYAMA, Ryuta SONODA, Koji IKAWA
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Publication number: 20160134015Abstract: 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: ApplicationFiled: January 14, 2016Publication date: May 12, 2016Applicant: Asahi Glass Company, LimitedInventors: Ryuta SONODA, Koji IKAWA, Kotaro SUENAGA, Toshiki SAYAMA
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Publication number: 20160087334Abstract: 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: ApplicationFiled: December 7, 2015Publication date: March 24, 2016Applicant: Asahi Glass Company, LimitedInventors: Toshiki SAYAMA, Ryuta SONODA, Koji IKAWA
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Publication number: 20150303577Abstract: 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: ApplicationFiled: July 2, 2015Publication date: October 22, 2015Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Ryuta SONODA, Koji IKAWA, Toshiki SAYAMA
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Publication number: 20150288066Abstract: 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: ApplicationFiled: June 23, 2015Publication date: October 8, 2015Applicant: Asahi Glass Company, LimitedInventors: Ryuta SONODA, Koji IKAWA, Toshiki SAYAMA
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Publication number: 20150130669Abstract: 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: ApplicationFiled: January 20, 2015Publication date: May 14, 2015Applicant: Asahi Glass Company, LimitedInventors: Ryuta SONODA, Koji IKAWA, Toshiki SAYAMA