Patents by Inventor Toru Fukasawa

Toru Fukasawa 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: 20240178874
    Abstract: An antenna device is configured to include: a divider circuit including an input/output terminal and a plurality of divider terminals; a plurality of matching circuits including one ends connected with the divider terminals; and a plurality of antenna elements connected with other ends of the matching circuits. Furthermore, the matching circuits are lossless circuits each having only an inductance component and a capacitance component, and the divider circuit is a lossless circuit whose characteristic impedance is indicated only by the inductance component and the capacitance component.
    Type: Application
    Filed: February 6, 2024
    Publication date: May 30, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Toru FUKASAWA, Akimichi HIROTA
  • Publication number: 20240171163
    Abstract: A frequency selecting/switching circuit includes an input terminal, an output terminal, a two-way splitter circuit, a first phase-adjusting circuit, a second phase-adjusting circuit, a first switch, and a second switch. The two-way splitter circuit splits a signal inputted to the input terminal into first and second frequency components and outputs them to its first output end and second output end, respectively. The first output end and second output end of the two-way splitter circuit are connected to a first end of the first phase-adjusting circuit and a first end of the second phase-adjusting circuit, respectively. A second end of the first phase-adjusting circuit and a second end of the second phase-adjusting circuit are connected to the first switch and the second switch, respectively. Each switch switches an output of a signal inputted to its input end, to its output end between a conductive state and a non-conductive state.
    Type: Application
    Filed: January 29, 2024
    Publication date: May 23, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroyuki AOYAMA, Akimichi HIROTA, Hidenori YUKAWA, Toru FUKASAWA
  • Publication number: 20230246346
    Abstract: An array antenna device includes: a ground plate that is a flat-plate shaped conductor; an element antenna array in which a plurality of tapered slot antennas are linearly arranged on the ground plate along an electric field direction; and a metal plate provided at both ends or one end of an antenna aperture formed in the element antenna array arranged on the ground plate along the electric field direction, the metal plate having a height from the ground plate higher than a height of the tapered slot antenna.
    Type: Application
    Filed: April 10, 2023
    Publication date: August 3, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hikaru Watanabe, Toru Takahashi, Kazunari Kihira, Toru Fukasawa
  • Publication number: 20230223694
    Abstract: An antenna device includes: a patch conductor provided on a substrate; a GND conductor provided in the substrate in such a manner as to face the patch conductor; GND pins that are provided in the substrate and that connect the patch conductor and the GND conductor; and an RF circuit provided on a first face of the patch conductor opposite to a second face of the patch conductor, the second face being attached to the substrate, the RF circuit being provided in such a manner as to be surrounded by the GND pins.
    Type: Application
    Filed: March 22, 2023
    Publication date: July 13, 2023
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi IKEDA, Kei YOKOKAWA, Narihiro NAKAMOTO, Akihito HIRAI, Toru FUKASAWA, Masataka OTSUKA
  • Patent number: 11621482
    Abstract: A conductor ground plane provided on a dielectric substrate and provided with a patch antenna and a conductor ground plane provided on the side of a dielectric substrate having a through hole are bonded by solder in a state where the through hole and the patch antenna are arranged to face each other, and a conductor ground plane provided on the back side of the dielectric substrate and a conductor ground plane provided on a dielectric substrate are bonded by solder.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: April 4, 2023
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kei Yokokawa, Narihiro Nakamoto, Toru Fukasawa, Hitoshi Arai, Tomohiro Takahashi, Kensuke Iwaki, Takamichi Kono, Keisuke Fujiwara
  • Publication number: 20230019219
    Abstract: An antenna device includes: a dielectric substrate having a feed line and a radiation unit provided on a first surface and having a ground conductor provided on a second surface opposite to the first surface; and a pair of second slits that is provided on a side of the radiation unit facing a side to which the feed line is connected and expands in directions away from each other toward the side to which the feed line is connected when the first surface is viewed from above.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 19, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Jun GOTO, Toru FUKASAWA
  • Patent number: 11437734
    Abstract: This antenna device is provided with: a ground; strip lines that extend from positions facing each other with respect to the width direction of the ground; a plurality of slots which is provided to the ground and which intersects with straight lines along the strip lines; and branch lines which intersect with the slots that are positioned to face the branch lines in a back surface.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: September 6, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Jun Goto, Takashi Maruyama, Toru Fukasawa
  • Publication number: 20220209402
    Abstract: A conductor ground plane provided on a dielectric substrate and provided with a patch antenna and a conductor ground plane provided on the side of a dielectric substrate having a through hole are bonded by solder in a state where the through hole and the patch antenna are arranged to face each other, and a conductor ground plane provided on the back side of the dielectric substrate and a conductor ground plane provided on a dielectric substrate are bonded by solder.
    Type: Application
    Filed: June 24, 2019
    Publication date: June 30, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kei YOKOKAWA, Narihiro NAKAMOTO, Toru FUKASAWA, Hitoshi ARAI, Tomohiro TAKAHASHI, Kensuke IWAKI, Takamichi KONO, Keisuke FUJIWARA
  • Patent number: 11289822
    Abstract: In radiation elements, recessed portions for adjusting the power of an electromagnetic wave that passes through the radiation elements are formed as power adjustment portions at coupling portions, respectively, which are on the opposite side of a feeding unit out of sets of two coupling portions to a feed line.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: March 29, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Jun Goto, Takashi Maruyama, Toru Fukasawa
  • Patent number: 11276940
    Abstract: A dielectric substrate is provided between a first waveguide member and a second waveguide member. The second waveguide member includes a plurality of slots for radiating a horizontally polarized wave. The dielectric substrate is provided with a plurality of line-shaped conductors arranged obliquely with respect to the waveguide axial direction and waveguide wall conductors as waveguide wall surfaces, and includes conductor-removed portions that function as vertically-polarized-wave radiation slot parallel to the waveguide axial direction. The waveguide wall conductors are connected by vias.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: March 15, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Narihiro Nakamoto, Toru Fukasawa, Shuji Nuimura
  • Patent number: 11228104
    Abstract: A calibration device of an array antenna is for a transmission means including a plurality of antenna elements and transmission signal processing systems corresponding to the plurality of antenna elements, in which an antenna element transmission signal is calibrated for amplitude and phase differences and a time difference for each of the antenna elements on the basis of a transmission signal calibrating value, the transmission means being for generating a plurality of transmission radio waves applied with amplitude and phase differences and a time difference corresponding to each of the plurality of antenna elements and emitting the transmission radio waves from the respective antenna elements, the calibration device including: a multicarrier calibration signal generating means for generating a plurality of calibration signals based on, in correspondence, a plurality of subcarriers including a first frequency unit of a subcarrier to which a subcarrier symbol is assigned and a second frequency unit not assig
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: January 18, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazunari Kihira, Toru Fukasawa
  • Patent number: 11183771
    Abstract: Included are: a first dielectric substrate provided with a first conductor ground plane on a front or back surface thereof; a plurality of patch antennas formed in the first conductor ground plane, a plurality of conductive members, ends of which connected to the first conductor ground plane to surround the patch antennas individually, and a second conductor ground plane connected to each of the other ends of the conductive members, and parts of the plurality of conductive members penetrate the first dielectric substrate, and the remaining parts of the conductive members function as spacers for providing an air layer between the first dielectric substrate and the second conductor ground plane, and the plurality of conductive members functions as spacers for providing an air layer between the first conductor ground plane and the second conductor ground plane.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: November 23, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kei Yokokawa, Narihiro Nakamoto, Toru Fukasawa, Tomohiro Takahashi, Masataka Otsuka
  • Publication number: 20210344111
    Abstract: A calibration device of an array antenna is for a transmission means including a plurality of antenna elements and transmission signal processing systems corresponding to the plurality of antenna elements, in which an antenna element transmission signal is calibrated for amplitude and phase differences and a time difference for each of the antenna elements on the basis of a transmission signal calibrating value, the transmission means being for generating a plurality of transmission radio waves applied with amplitude and phase differences and a time difference corresponding to each of the plurality of antenna elements and emitting the transmission radio waves from the respective antenna elements, the calibration device including: a multicarrier calibration signal generating means for generating a plurality of calibration signals based on, in correspondence, a plurality of subcarriers including a first frequency unit of a subcarrier to which a subcarrier symbol is assigned and a second frequency unit not assig
    Type: Application
    Filed: July 24, 2018
    Publication date: November 4, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kazunari KIHIRA, Toru FUKASAWA
  • Patent number: 11133587
    Abstract: An antenna device includes: a dielectric substrate 1; a first conductor 2 provided on a first surface of the dielectric substrate 1; a second conductor 100 provided on a second surface of the dielectric substrate 1, the second surface being opposite to the first surface on which the first conductor 2 is provided, the second conductor 100 having a feeding point 12; a third conductor 200a provided on the same second surface on which the second conductor 100 is provided; and a pair of transmission lines that electrically connect the second conductor 100 and the third conductor 200a.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: September 28, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi Uesaka, Satoshi Yamaguchi, Naoyuki Yamamoto, Toru Fukasawa
  • Patent number: 11128053
    Abstract: Included are: a waveguide in which multiple probe inserting holes are provided in a first wall surface, and multiple connection shaft inserting holes are provided in a second wall surface; multiple feed probes each of which is inserted in one of the probe inserting holes, and to a first end of each of which one of multiple circularly polarized element antennas is connected; multiple connection shafts each of which is inserted in one of the connection shaft inserting holes, and a third end of each of which is connected to a second end of one of the feed probes; multiple rotation shafts, a fifth end of each of which is connected to a fourth end of one of the connection shafts; multiple rotation devices each of which rotates one of the rotation shafts; and a control device that individually controls rotation of the rotation devices.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: September 21, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Narihiro Nakamoto, Satoshi Yamaguchi, Toru Fukasawa, Masataka Otsuka, Hiroaki Miyashita
  • Publication number: 20210143535
    Abstract: An array antenna apparatus is configured to include a plurality of connecting conductors each provided inside a dielectric substrate in such a manner that one end of the connecting conductor is connected to a first ground conductor and another end of the connecting conductor is connected to a second ground conductor, a location of the one end connected to the first ground conductor being a location that surrounds any one of a plurality of radiation conductors.
    Type: Application
    Filed: May 15, 2018
    Publication date: May 13, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hikaru WATANABE, Satoshi YAMAGUCHI, Toru FUKASAWA
  • Patent number: 10992039
    Abstract: An array antenna device, including: a waveguide (1) having a plurality of radiation units (2) arranged on one tube wall thereof, in which the waveguide (1) has a plurality of grooves (3) arranged on an inner side of a tube wall facing the tube wall, movable short-circuit surfaces (4) each electrically short-circuited to an inner wall of one of the grooves (3), and movable short-circuit surface controlling mechanisms (5) for changing positions of the movable short-circuit surfaces (4).
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: April 27, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kei Yokokawa, Jun Goto, Kazunari Kihira, Tomohiro Takahashi, Masataka Otsuka, Narihiro Nakamoto, Toru Fukasawa, Takuro Sasaki, Tomohiro Mizuno
  • Patent number: 10992050
    Abstract: Disclosed is an antenna device including a rectangular waveguide (1) having a first opening end (2a) and a second opening end (2b), a septum phase plate (3) disposed inside the rectangular waveguide (1) in such a way as to partition the first opening end (2a) into two parts along a first direction perpendicular to a waveguide axial direction of the rectangular waveguide (1), a width of the septum phase plate in a second direction perpendicular to both the waveguide axial direction of the rectangular waveguide (1) and the first direction becoming narrower stepwise with advancing from the first opening end (2a1, 2a2) toward the second opening end (2b), and first projecting portions (4a, 4b) disposed on two respective first inner walls (1a, 1b) parallel to the septum phase plate (3), out of four inner walls of the rectangular waveguide (1), in such a way as to project toward an inside of the rectangular waveguide (1).
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: April 27, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Jun Goto, Toru Fukasawa
  • Patent number: D956729
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: July 5, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Jun Goto, Toru Fukasawa
  • Patent number: D1028951
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: May 28, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kei Yokokawa, Narihiro Nakamoto, Toru Fukasawa, Hitoshi Arai, Tomohiro Takahashi, Kensuke Iwaki, Takamichi Kono, Keisuke Fujiwara, Kenjiro Takanishi, Tatsuya Sakamoto, Naoya Noguchi