Patents by Inventor Takeshi Sampo

Takeshi Sampo 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: 20210167507
    Abstract: An antenna device according to the present invention includes: an inverted F antenna which includes a planar part having a face opposing a grounding surface with a predetermined interval therebetween, a feeding part disposed in a plane forming a predetermined angle with respect to the grounding surface, and a short-circuit part for grounding a portion of the planar part, wherein each of the planar part and the feeding part has a plate shape, and is physically separated from each other; and wherein the planar part and the feeding part are electrically connected each other at a frequency less than or equal to a predetermined frequency.
    Type: Application
    Filed: June 28, 2018
    Publication date: June 3, 2021
    Applicant: YOKOWO CO., LTD.
    Inventors: Kenichi YAMADA, Takeshi SAMPO
  • Publication number: 20210151896
    Abstract: An antenna device is mounted on a base plate. The antenna device includes an antenna element, a base, and a magnetic body. The antenna element is mounted on the base. The magnetic body is disposed between the base and the base plate.
    Type: Application
    Filed: March 22, 2018
    Publication date: May 20, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Taiki KUSUKAME, Takeshi SAMPO, Takayuki SONE, Masaki TSUKAMOTO
  • Publication number: 20210135366
    Abstract: A slotted patch antenna includes a dielectric substrate, a radiation electrode which is provided on a major surface of the dielectric substrate, and a ground conductor which is disposed on a surface that is opposite to the major surface. The radiation electrode is formed with a slots having at least one of a meandering portion, a curve portion, or a folded portion. An external shape of the radiation electrode is a square, and totally two pairs of slots are formed inside the square, each of the slots being along respective sides of the square. Each of the slots is arranged so as to be line-symmetrical with respect to an axis of symmetry that is parallel with one of the sides of the square and passes through a center of the square, and to be point-symmetrical with respect to the center of the square.
    Type: Application
    Filed: March 2, 2018
    Publication date: May 6, 2021
    Applicant: YOKOWO CO., LTD.
    Inventor: Takeshi SAMPO
  • Publication number: 20210091480
    Abstract: A patch antenna includes: a radiating element having a flat-plate shape; and a parasitic element provided at a position spaced away from the radiating element in planar view in which the radiating element is seen from a direction perpendicular to a plate surface of the radiating element. A longitudinal direction of the parasitic element is oriented along a direction of a line segment connecting a center of the radiating element and a feeding point in the planar view.
    Type: Application
    Filed: February 7, 2019
    Publication date: March 25, 2021
    Applicant: YOKOWO CO., LTD.
    Inventor: Takeshi SAMPO
  • Patent number: 10950930
    Abstract: An antenna device has a configuration in which a feeding point is located at a position that is distant from an outer periphery of a ground conductor plate to a center side and that would correspond to polarized waves parallel to the ground conductor plate. The antenna devices includes a ground conductor plate and an antenna element. The antenna element includes a first vertical portion and a second vertical portion which are erected substantially perpendicularly from the ground conductor plate and a first parallel portion, a second parallel portion, and a third parallel portion which extend substantially parallel to the ground conductor plate. An end portion, in the ?Z direction, of the first vertical portion serves as a feeding point and is located at a position that is distant from an outer periphery of the ground conductor plate to a center side.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: March 16, 2021
    Assignee: YOKOWO CO., LTD.
    Inventor: Takeshi Sampo
  • Publication number: 20200295444
    Abstract: A patch antenna includes a flat-plate radiating element; and a metal wall provided outside a peripheral edge of the radiating element, such that a wall surface of the metal wall intersects a line connecting a center of the radiating element and a feeding point. An antenna device for a vehicle includes: the patch antenna; a housing installed in a predetermined orientation at a predetermined position of the vehicle; and a support supporting the patch antenna such that the patch antenna is used for vertically polarized waves when the housing is installed in the predetermined orientation at the predetermined position.
    Type: Application
    Filed: August 1, 2018
    Publication date: September 17, 2020
    Applicant: YOKOWO CO., LTD.
    Inventor: Takeshi SAMPO
  • Publication number: 20190273311
    Abstract: An antenna device to be mounted on a vehicle, including a ground plate having a planar shape; and an antenna element which is a resonant type, is provided at a position so as not to overlap with the ground conductor within a plane substantially parallel to the ground conductor, and is configured to transmit or receive a polarized wave parallel to the ground conductor. A rectangular notch is formed in the ground plate to have both a right and left edge portions with a predetermined width being left, and the antenna element is provided at a position overlapping with the notch in a plane substantially parallel to the ground plate.
    Type: Application
    Filed: December 14, 2017
    Publication date: September 5, 2019
    Applicant: YOKOWO CO., LTD.
    Inventors: Takeshi SAMPO, Kenichi YAMADA, Yuki KIKUCHI
  • Publication number: 20190267706
    Abstract: An antenna device has a configuration in which a feeding point is located at a position that is distant from an outer periphery of a ground conductor plate to a center side and that would correspond to polarized waves parallel to the ground conductor plate. The antenna devices includes a ground conductor plate and an antenna element. The antenna element includes a first vertical portion and a second vertical portion which are erected substantially perpendicularly from the ground conductor plate and a first parallel portion, a second parallel portion, and a third parallel portion which extend substantially parallel to the ground conductor plate. An end portion, in the ?Z direction, of the first vertical portion serves as a feeding point and is located at a position that is distant from an outer periphery of the ground conductor plate to a center side.
    Type: Application
    Filed: November 8, 2017
    Publication date: August 29, 2019
    Applicant: YOKOWO CO., LTD.
    Inventor: Takeshi SAMPO
  • Patent number: 9799958
    Abstract: A microstrip antenna has two feed points. The microstrip antenna includes a feeder circuit which is configured to feed, to the two feed points, electric signals whose phases are different by 90° from each other. The feeder circuit includes a Wilkinson coupler unit and a phase-shift unit each of which is formed as a lumped constant circuit.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: October 24, 2017
    Assignee: YOKOWO CO., LTD.
    Inventors: Takeshi Sampo, Kazuhiro Kowaita
  • Publication number: 20160211581
    Abstract: A microstrip antenna has two feed points. The microstrip antenna includes a feeder circuit which is configured to feed, to the two feed points, electric signals whose phases are different by 90° from each other. The feeder circuit includes a Wilkinson coupler unit and a phase-shift unit each of which is formed as a lumped constant circuit.
    Type: Application
    Filed: May 16, 2014
    Publication date: July 21, 2016
    Applicant: YOKOWO CO., LTD.
    Inventors: Takeshi SAMPO, Kazuhiro KOWAITA
  • Patent number: 8519898
    Abstract: An antenna device includes: an antenna base plate having a shape of a flat plate; a capacity loading plate of a top capacity loaded type monopole antenna, the capacity loading plate arranged in parallel with the antenna base plate; and a planar antenna arranged between the antenna base plate and the capacity loading plate. A size of at least a part of the capacity loading plate in a direction of width of the capacity loading plate is less than about ¼ wavelength of receiving frequency of the planar antenna, and edges of the capacity loading plate in the direction of width of the capacity loading plate are folded back so that the capacity loading plate has a meander shape extending in a direction of length of the capacity loading plate.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: August 27, 2013
    Assignee: Yokowo Co., Ltd.
    Inventors: Takeshi Sampo, Noritaka Terashita, Kazuya Matsunaga, Masashi Nagami
  • Publication number: 20120026050
    Abstract: An antenna device includes: an antenna base plate having a shape of a flat plate; a capacity loading plate of a top capacity loaded type monopole antenna, the capacity loading plate arranged in parallel with the antenna base plate; and a planar antenna arranged between the antenna base plate and the capacity loading plate. A size of at least a part of the capacity loading plate in a direction of width of the capacity loading plate is less than about ¼ wavelength of receiving frequency of the planar antenna, and edges of the capacity loading plate in the direction of width of the capacity loading plate are folded back so that the capacity loading plate has a meander shape extending in a direction of length of the capacity loading plate.
    Type: Application
    Filed: July 29, 2011
    Publication date: February 2, 2012
    Inventors: Takeshi SAMPO, Noritaka TERASHITA, Kazuya MATSUNAGA, Masashi NAGAMI
  • Patent number: 7518567
    Abstract: In a planar antenna, a plate member is adapted to be electrically grounded. A radiating electrode is opposing the plate member with a gap and extending parallel to the plate member. A feeding pin is disposed at a center part of the radiating electrode, and adapted to feed power to the radiating electrode. At least one pair of short pins is electrically connecting the plate member and an outer edge of the radiating electrode at symmetrical positions relative to the feeding pin. The radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: April 14, 2009
    Assignee: Yokowo Co., Ltd.
    Inventors: Naoaki Utagawa, Katsumi Chigira, Takeshi Sampo, Takashi Nozaki
  • Publication number: 20070171132
    Abstract: In a planar antenna, a plate member is adapted to be electrically grounded. A radiating electrode is opposing the plate member with a gap and extending parallel to the plate member. A feeding pin is disposed at a center part of the radiating electrode, and adapted to feed power to the radiating electrode. At least one pair of short pins is electrically connecting the plate member and an outer edge of the radiating electrode at symmetrical positions relative to the feeding pin. The radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 26, 2007
    Inventors: Naoaki Utagawa, Katsumi Chigira, Takeshi Sampo, Takashi Nozaki
  • Patent number: 7126538
    Abstract: In a microstrip antenna, a dielectric member is disposed on a grounded conductive plate. A patch antenna element is disposed on the dielectric member. Each of a plurality of conductive rods has an electrical length corresponding to one quarter of a wavelength at a resonance frequency of the microstrip antenna. The rods are arranged on an edge portion of a face of the conductive plate facing the patch antenna element, with an interval which is an electric length corresponding to a half or less of the wavelength at the resonance frequency, such that each of the rods extends perpendicularly to the conductive plate while one end thereof is electrically connected to the conductive plate.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: October 24, 2006
    Assignee: Yokowo Co., Ltd.
    Inventor: Takeshi Sampo
  • Patent number: 6980164
    Abstract: An antenna apparatus is mounted on a vehicle body provided with a spoiler made of an insulating resin. A feeder element is disposed in the spoiler such that the vehicle body serves as ground without providing a ground element in the spoiler.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: December 27, 2005
    Assignee: Yokowo Co., Ltd.
    Inventors: Takeshi Sampo, Shigeo Suzuki, Takanori Tashiro
  • Publication number: 20050146469
    Abstract: In a microstrip antenna, a dielectric member is disposed on a grounded conductive plate. A patch antenna element is disposed on the dielectric member. Each of a plurality of conductive rods has an electrical length corresponding to one quarter of a wavelength at a resonance frequency of the microstrip antenna. The rods are arranged on an edge portion of a face of the conductive plate facing the patch antenna element, with an interval which is an electric length corresponding to a half or less of the wavelength at the resonance frequency, such that each of the rods extends perpendicularly to the conductive plate while one end thereof is electrically connected to the conductive plate.
    Type: Application
    Filed: September 29, 2004
    Publication date: July 7, 2005
    Inventor: Takeshi Sampo
  • Publication number: 20040169608
    Abstract: An antenna apparatus is mounted on a vehicle body provided with a spoiler made of an insulating resin. A feeder element is disposed in the spoiler such that the vehicle body serves as ground without providing a ground element in the spoiler.
    Type: Application
    Filed: November 24, 2003
    Publication date: September 2, 2004
    Applicant: Yokowo Co., Ltd.
    Inventors: Takeshi Sampo, Shigeo Suzuki, Takanori Tashiro
  • Patent number: D592193
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: May 12, 2009
    Assignee: Yokowo Co., Ltd.
    Inventors: Naoaki Utagawa, Minoru Arata, Hideaki Kanai, Takeshi Sampo