Patents by Inventor Motomi WATANABE
Motomi WATANABE 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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Publication number: 20220407489Abstract: 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: ApplicationFiled: August 3, 2022Publication date: December 22, 2022Applicant: Mitsubishi Electric CorporationInventors: Motomi WATANABE, Yukihiro HOMMA, Tomohiro TAKAHASHI, Shinji ARAI, Kenji HARAUCHI, Hidenori YUKAWA
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Patent number: 11233303Abstract: A coaxial line is provided which includes: a first columnar conductor disposed inside a multilayer substrate such that one end thereof is coupled to a first stripline and that the other end thereof is coupled to a second stripline; and one or more second columnar conductors penetrating the multilayer substrate such that one end thereof is coupled to a ground layer and that the other end thereof is coupled to a ground layer, the first columnar conductor acting as an inner conductor, and the second columnar conductors acting as outer conductors. Each of the first and second striplines is coupled to an open stub acting as resonators and a matching conductor acting as capacitance matching elements.Type: GrantFiled: September 14, 2018Date of Patent: January 25, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Motomi Watanabe, Takeshi Yuasa, Takuma Nishimura
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Patent number: 11114732Abstract: 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: GrantFiled: May 22, 2017Date of Patent: September 7, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yu Ushijima, Hidenori Yukawa, Takeshi Oshima, Motomi Watanabe, Naofumi Yoneda
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Patent number: 11101530Abstract: 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: GrantFiled: May 26, 2017Date of Patent: August 24, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hidenori Yukawa, Yu Ushijima, Motomi Watanabe, Jun Goto, Naofumi Yoneda, Shinji Arai
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Publication number: 20200381376Abstract: An electronic circuit to which the present invention is applied has a configuration in which a first substrate and a second substrate are stacked and connected to each other. The electronic circuit includes: a transmission path configured to connect a first wiring line for a signal formed in the first substrate and a second wiring for a signal formed in the second substrate to each other; and a short-circuit stub configured to connect a ground conductor provided in the first substrate and the transmission path to each other through use of three or more types of conductors.Type: ApplicationFiled: August 19, 2020Publication date: December 3, 2020Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Motomi WATANABE
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Publication number: 20200381794Abstract: 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: ApplicationFiled: May 26, 2017Publication date: December 3, 2020Applicant: Mitsubishi Electric CorporationInventors: Hidenori YUKAWA, Yu USHIJIMA, Motomi WATANABE, Jun GOTO, Naofumi YONEDA, Shinji ARAI
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Publication number: 20200274218Abstract: 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: ApplicationFiled: May 22, 2017Publication date: August 27, 2020Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yu USHIJIMA, Hidenori YUKAWA, Takeshi OSHIMA, Motomi WATANABE, Naofumi YONEDA
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Publication number: 20200259234Abstract: A coaxial line is provided which includes: a first columnar conductor disposed inside a multilayer substrate such that one end thereof is coupled to a first stripline and that the other end thereof is coupled to a second stripline; and one or more second columnar conductors penetrating the multilayer substrate such that one end thereof is coupled to a ground layer and that the other end thereof is coupled to a ground layer, the first columnar conductor acting as an inner conductor, and the second columnar conductors acting as outer conductors. Each of the first and second striplines is coupled to an open stub acting as resonators and a matching conductor acting as capacitance matching elements.Type: ApplicationFiled: September 14, 2018Publication date: August 13, 2020Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Motomi WATANABE, Takeshi YUASA, Takuma NISHIMURA
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Patent number: 10680307Abstract: 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: GrantFiled: June 5, 2017Date of Patent: June 9, 2020Assignee: Mitsubishi Electric CoporationInventors: Motomi Watanabe, Shinji Arai, Tomohiro Takahashi, Takeshi Oshima, Takeshi Yuasa, Takuma Nishimura, Hidenori Yukawa
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Patent number: 10581136Abstract: 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: GrantFiled: May 24, 2016Date of Patent: March 3, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yu Ushijima, Hidenori Yukawa, Motomi Watanabe, Naofumi Yoneda
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Publication number: 20190157735Abstract: 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: ApplicationFiled: June 5, 2017Publication date: May 23, 2019Applicant: Mitsubishi Electric CorporationInventors: Motomi WATANABE, Shinji ARAI, Tomohiro TAKAHASHI, Takeshi OSHIMA, Takeshi YUASA, Takuma NISHIMURA, Hidenori YUKAWA
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Publication number: 20190123414Abstract: 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: ApplicationFiled: May 24, 2016Publication date: April 25, 2019Applicant: Mitsubishi Electric CorporationInventors: Yu USHIJIMA, Hidenori YUKAWA, Motomi WATANABE, Naofumi YONEDA
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Publication number: 20180366826Abstract: 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: ApplicationFiled: March 18, 2016Publication date: December 20, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hidenori YUKAWA, Yu USHIJIMA, Motomi WATANABE, Naofumi YONEDA
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Publication number: 20180358679Abstract: 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: ApplicationFiled: January 12, 2016Publication date: December 13, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hidenori YUKAWA, Yu USHIJIMA, Motomi WATANABE, Naofumi YONEDA
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Patent number: D986227Type: GrantFiled: January 9, 2020Date of Patent: May 16, 2023Assignee: Mitsubishi Electric CorporationInventors: Yu Ushijima, Hidenori Yukawa, Motomi Watanabe, Toru Okagaki