Patents by Inventor Hidenori Yukawa

Hidenori Yukawa 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: 20240213189
    Abstract: A power amplification high-frequency circuit device includes: an input conversion pin; an output conversion pin; a high-frequency amplifier having an input terminal and an output terminal; a waveguide tube in which an input waveguide tube and an output waveguide tube face each other with a short wall interposed between the input waveguide tube and the output waveguide tube, an upper wall of the input waveguide tube has an input pin insertion hole into which the input conversion pin is inserted while being electrically insulated, an upper wall of the output waveguide tube has an output pin insertion hole into which the output conversion pin is inserted while being electrically insulated, an upper wall has a storage portion having a flat bottom surface, and the high-frequency amplifier is stored in the storage portion with a bottom surface thereof being in close contact with the bottom surface of the storage portion.
    Type: Application
    Filed: March 5, 2024
    Publication date: June 27, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuta SUGIYAMA, Takeshi OSHIMA, Hidenori ISHIBASHI, Miki KAGANO, Hidenori YUKAWA
  • 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: 20220407489
    Abstract: A high frequency filter includes: a multilayer substrate including a first substrate for which lands are provided, a second substrate for which lands are provided, and a third substrate for which lands are provided, the third substrate being sandwiched between the first substrate and the second substrate; a columnar conductor electrically connected to the lands in the multilayer substrate; and columnar conductors provided to surround the columnar conductor, electrically connected to a ground plane of the first substrate, and electrically connected to a ground plane of the second substrate. The spacing between the lands of the first substrate and the lands of the third substrate and the spacing between the lands of the second substrate and the lands of the third substrate are electrical lengths of 90 degrees or less at the cutoff frequency.
    Type: Application
    Filed: August 3, 2022
    Publication date: December 22, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Motomi WATANABE, Yukihiro HOMMA, Tomohiro TAKAHASHI, Shinji ARAI, Kenji HARAUCHI, Hidenori YUKAWA
  • Publication number: 20220045412
    Abstract: A polarized waveguide filter is formed in which the polarized waveguide filter includes a first rectangular waveguide; a second rectangular waveguide; and a rectangular cavity resonator that has a first edge surface connected to an electromagnetic wave exit plane of the first rectangular waveguide via a coupling unit, and has a second edge surface facing the first edge surface and connected to an electromagnetic wave incident plane of the second rectangular waveguide via a coupling unit, and excites each of a TE10 mode and a TE20 mode of an electromagnetic wave, and the rectangular cavity resonator has two first wall surfaces and two second wall surfaces narrower in area than the first wall surfaces, and a protrusion that shifts a resonance frequency of the TE10 mode and a resonance frequency of the TE20 mode by respective amounts different from each other is provided on at least one of the two first wall surfaces, in such a way as to protrude outward from the rectangular cavity resonator.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hidenori YUKAWA, Ryuya SEKI, Hiroto ADO, Hiromasa NAKAJIMA, Yu USHIJIMA, Toru TAKAHASHI
  • Patent number: 11114732
    Abstract: A waveguide unit (2) is closed at one end thereof by a short circuit plane (2a) provided with through holes (3-1 to 3-6). Radio wave absorbers (4-1 to 4-6) absorb a frequency signal being a non-reflective target in the state of being inserted through the through holes (3-1 to 3-6) toward the inside of the waveguide unit (2) and contacting inner surfaces (3?-1 to 3?-6) of the through holes (3-1 to 3-6).
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: September 7, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yu Ushijima, Hidenori Yukawa, Takeshi Oshima, Motomi Watanabe, Naofumi Yoneda
  • Patent number: 11101530
    Abstract: A square waveguide (1) has four ridges (6a, 6b, 7a, 7b). The cross section of the square waveguide (1) perpendicular to a waveguide axial direction is square. Inside the square waveguide (1), two rectangular waveguide terminals (4, 5) are formed by partitioning the inside along the waveguide axial direction. A septum phase plate (2) formed to get narrower stepwisely as its gets closer to a square waveguide terminal (3) opposite to the rectangular waveguide terminals (4, 5) is provided. A projecting portion (8) is provided on a part of a ridge (7b) formed on a ridge-side wall surface opposite to a wall surface, the septum phase plate (2) being joined to the wall surface in a part where the septum phase plate has largest width, the projecting portion (8) being larger than other parts of the ridge (7b) in a cross-sectional shape perpendicular to the waveguide axial direction.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: August 24, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hidenori Yukawa, Yu Ushijima, Motomi Watanabe, Jun Goto, Naofumi Yoneda, Shinji Arai
  • Publication number: 20200381794
    Abstract: A square waveguide (1) has four ridges (6a, 6b, 7a, 7b). The cross section of the square waveguide (1) perpendicular to a waveguide axial direction is square. Inside the square waveguide (1), two rectangular waveguide terminals (4, 5) are formed by partitioning the inside along the waveguide axial direction. A septum phase plate (2) formed to get narrower stepwisely as its gets closer to a square waveguide terminal (3) opposite to the rectangular waveguide terminals (4, 5) is provided. A projecting portion (8) is provided on a part of a ridge (7b) formed on a ridge-side wall surface opposite to a wall surface, the septum phase plate (2) being joined to the wall surface in a part where the septum phase plate has largest width, the projecting portion (8) being larger than other parts of the ridge (7b) in a cross-sectional shape perpendicular to the waveguide axial direction.
    Type: Application
    Filed: May 26, 2017
    Publication date: December 3, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hidenori YUKAWA, Yu USHIJIMA, Motomi WATANABE, Jun GOTO, Naofumi YONEDA, Shinji ARAI
  • Publication number: 20200274218
    Abstract: A waveguide unit (2) is closed at one end thereof by a short circuit plane (2a) provided with through holes (3-1 to 3-6). Radio wave absorbers (4-1 to 4-6) absorb a frequency signal being a non-reflective target in the state of being inserted through the through holes (3-1 to 3-6) toward the inside of the waveguide unit (2) and contacting inner surfaces (3?-1 to 3?-6) of the through holes (3-1 to 3-6).
    Type: Application
    Filed: May 22, 2017
    Publication date: August 27, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yu USHIJIMA, Hidenori YUKAWA, Takeshi OSHIMA, Motomi WATANABE, Naofumi YONEDA
  • Patent number: 10680307
    Abstract: A substrate is used as one tube wall of a hollow waveguide, the substrate including a strip line wired in an inner layer, a first ground surface formed on a front surface, and a second ground surface formed on a part of a back surface. As a result of such a configuration, a waveguide strip line transducer having the same dimension as the external dimension of the hollow waveguide can be obtained.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: June 9, 2020
    Assignee: Mitsubishi Electric Coporation
    Inventors: Motomi Watanabe, Shinji Arai, Tomohiro Takahashi, Takeshi Oshima, Takeshi Yuasa, Takuma Nishimura, Hidenori Yukawa
  • Patent number: 10581136
    Abstract: An input waveguide (6) having one end connected between an L-shaped waveguide (1a) and an L-shaped waveguide (1f) and another end connected to the PORT (1); an output waveguide (7) having one end connected between the L-shaped waveguide (1a) and a flat waveguide (1b) and another end connected to the PORT (2); an output waveguide (8) having one end connected between the flat waveguide (1b) and an L-shaped waveguide (1c) and another end connected to the PORT (3); an output waveguide (9) having one end connected between the L-shaped waveguide (1c) and an L-shaped waveguide (1d) and another end connected to the PORT (4); and a plurality of branching waveguides (10) each having one end connected to the output waveguide (7) and another end connected to the output waveguide (8) are provided.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: March 3, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yu Ushijima, Hidenori Yukawa, Motomi Watanabe, Naofumi Yoneda
  • Publication number: 20190157735
    Abstract: A substrate is used as one tube wall of a hollow waveguide, the substrate including a strip line wired in an inner layer, a first ground surface formed on a front surface, and a second ground surface formed on a part of a back surface. As a result of such a configuration, a waveguide strip line transducer having the same dimension as the external dimension of the hollow waveguide can be obtained.
    Type: Application
    Filed: June 5, 2017
    Publication date: May 23, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Motomi WATANABE, Shinji ARAI, Tomohiro TAKAHASHI, Takeshi OSHIMA, Takeshi YUASA, Takuma NISHIMURA, Hidenori YUKAWA
  • Publication number: 20190123414
    Abstract: An input waveguide (6) having one end connected between an L-shaped waveguide (1a) and an L-shaped waveguide (1f) and another end connected to the PORT (1); an output waveguide (7) having one end connected between the L-shaped waveguide (1a) and a flat waveguide (1b) and another end connected to the PORT (2); an output waveguide (8) having one end connected between the flat waveguide (1b) and an L-shaped waveguide (1c) and another end connected to the PORT (3); an output waveguide (9) having one end connected between the L-shaped waveguide (1c) and an L-shaped waveguide (1d) and another end connected to the PORT (4); and a plurality of branching waveguides (10) each having one end connected to the output waveguide (7) and another end connected to the output waveguide (8) are provided.
    Type: Application
    Filed: May 24, 2016
    Publication date: April 25, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yu USHIJIMA, Hidenori YUKAWA, Motomi WATANABE, Naofumi YONEDA
  • Publication number: 20180366826
    Abstract: To achieve a phase shift circuit capable of obtaining good reflection characteristics and a desired phase shift amount at the center frequency without increasing the length in the propagating direction, the phase shift circuit includes: an input waveguide having an input terminal at one end; an output waveguide having an output terminal at one end; a middle waveguide whose thickness is thinner than a thickness of the input waveguide or the output waveguide and whose central position in a thickness direction different from a central position in the thickness direction of the input waveguide or the output waveguide; a first tapered waveguide which connects another end of the input waveguide with one end of the middle waveguide; and a second tapered waveguide which connects another end of the output waveguide with another end of the middle waveguide.
    Type: Application
    Filed: March 18, 2016
    Publication date: December 20, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hidenori YUKAWA, Yu USHIJIMA, Motomi WATANABE, Naofumi YONEDA
  • Publication number: 20180358679
    Abstract: A third coupler (3c) outputs a signal outputted from a first coupler (3a) to an input terminal (8-1) of a second septum polarizer (8b), and outputs a signal outputted from a second coupler (3b) to an input terminal (8-2) of a first septum polarizer (8a).
    Type: Application
    Filed: January 12, 2016
    Publication date: December 13, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hidenori YUKAWA, Yu USHIJIMA, Motomi WATANABE, Naofumi YONEDA
  • Patent number: 9929454
    Abstract: A circularly polarized wave generator includes a rectangular hollow waveguide (1), a plurality of first protrusions (2) that are provided on one pair of opposing wall surfaces in the waveguide (1), have longitudinal directions orthogonal to an axial direction of the waveguide (1), and are arranged at intervals along the axial direction, and a plurality of second protrusions (3) that are provided between the first protrusions (2) on the wall surfaces and are arranged with longitudinal directions thereof running along the axial direction.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 27, 2018
    Assignee: Mitsubishi Electrics Corporation
    Inventors: Yu Ushijima, Hidenori Yukawa, Tetsu Owada, Shuji Nuimura
  • Publication number: 20170170571
    Abstract: A circularly polarized wave generator includes a rectangular hollow waveguide (1), a plurality of first protrusions (2) that are provided on one pair of opposing wall surfaces in the waveguide (1), have longitudinal directions orthogonal to an axial direction of the waveguide (1), and are arranged at intervals along the axial direction, and a plurality of second protrusions (3) that are provided between the first protrusions (2) on the, all surfaces and are arranged with longitudinal directions thereof running along the axial direction.
    Type: Application
    Filed: April 2, 2015
    Publication date: June 15, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yu USHIJIMA, Hidenori YUKAWA, Tetsu OWADA, Shuji NUIMURA
  • Patent number: 9000861
    Abstract: A polarization coupler includes: connector waveguide that connects circular waveguide with quadrangular waveguide arranged in an axial direction of circular waveguide and having short side shorter than an inner diameter of circular waveguide; flat conductor wall formed over connector and circular waveguides, and dividing the inside of connector and circular waveguides arranged parallel to an extending direction of long side of quadrangular waveguide; first inclined surface formed on inner wall of connector waveguide at a position facing one surface of conductor wall, and inclined toward conductor wall as coming closer to quadrangular waveguide; second inclined surface formed on the inner wall of connector waveguide at a position facing the other surface of conductor wall, and inclined toward conductor wall as coming closer to quadrangular waveguide; and coupling hole, formed in circular waveguide, for extracting one polarization-divided by conductor wall out of electromagnetic waves propagated through circula
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: April 7, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroto Ado, Shuji Nuimura, Tomohiro Mizuno, Hidenori Yukawa, Tetsu Owada, Takaaki Kimata
  • Publication number: 20140197908
    Abstract: A polarization coupler includes: connector waveguide that connects circular waveguide with quadrangular waveguide arranged in an axial direction of circular waveguide and having short side shorter than an inner diameter of circular waveguide; flat conductor wall formed over connector and circular waveguides, and dividing the inside of connector and circular waveguides arranged parallel to an extending direction of long side of quadrangular waveguide; first inclined surface formed on inner wall of connector waveguide at a position facing one surface of conductor wall, and inclined toward conductor wall as coming closer to quadrangular waveguide; second inclined surface formed on the inner wall of connector waveguide at a position facing the other surface of conductor wall, and inclined toward conductor wall as coming closer to quadrangular waveguide; and coupling hole, formed in circular waveguide, for extracting one polarization-divided by conductor wall out of electromagnetic waves propagated through circula
    Type: Application
    Filed: November 16, 2012
    Publication date: July 17, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroto Ado, Shuji Nuimura, Tomohiro Mizuno, Hidenori Yukawa, Tetsu Owada, Takaaki Kimata
  • Patent number: 8520651
    Abstract: A portable device configured to be connected to a router via a wireless or wired connection. The portable device includes a first processing section that operates in each of a first operation mode to serve as a bridge functional part and a second operation mode to serve as a router functional part. The first processing section operates in the first operation mode when the portable device is connected to the router.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: August 27, 2013
    Assignee: Buffalo Inc.
    Inventors: Daisuke Yamada, Hidenori Yukawa
  • Patent number: D986227
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: May 16, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yu Ushijima, Hidenori Yukawa, Motomi Watanabe, Toru Okagaki