Patents by Inventor Hiroyuki Nonomura
Hiroyuki Nonomura 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: 11005452Abstract: A control circuit (16) is configured to detect the impedance P1 of a load (3) and control each of the reactance value L1 of a first variable reactance element (12), the reactance value L2 of a second variable reactance element (14), and the phase shift amount ? of a phase shifter (15) on the basis of the detected impedance P1. Consequently, impedance matching can be achieved even with the phase shifter (15) that performs discrete phase shift control.Type: GrantFiled: May 24, 2017Date of Patent: May 11, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Dai Ninomiya, Eigo Kuwata, Hiroyuki Nonomura
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Patent number: 10992018Abstract: A coaxial-waveguide-to-hollow-waveguide transition circuit (1) includes a hollow waveguide (10), a coaxial waveguide (20) having an end coupled to a wide wall (16) of the hollow waveguide (10), and a strip conductor (30) located inside the internal path (10h) of the hollow waveguide (10). The coaxial waveguide (20) includes a conducting core wire (22) extending into the internal path (10h) of the hollow waveguide (10). The strip conductor (30) is located so as to make a short-circuit connection between the conducting core wire (22) of the coaxial waveguide (20) and a termination surface (12) of the hollow waveguide (10).Type: GrantFiled: July 22, 2016Date of Patent: April 27, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Akimichi Hirota, Takeshi Oshima, Naofumi Yoneda, Jun Nishihara, Hiroyuki Nonomura
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Publication number: 20200328491Abstract: A coaxial-waveguide-to-hollow-waveguide transition circuit (1) includes a hollow waveguide (10), a coaxial waveguide (20) having an end coupled to a wide wall (16) of the hollow waveguide (10), and a strip conductor (30) located inside the internal path (10h) of the hollow waveguide (10). The coaxial waveguide (20) includes a conducting core wire (22) extending into the internal path (10h) of the hollow waveguide (10). The strip conductor (30) is located so as to make a short-circuit connection between the conducting core wire (22) of the coaxial waveguide (20) and a termination surface (12) of the hollow waveguide (10).Type: ApplicationFiled: July 22, 2016Publication date: October 15, 2020Applicant: Mitsubishi Electric CorporationInventors: Akimichi HIROTA, Takeshi OSHIMA, Naofumi YONEDA, Jun NISHIHARA, Hiroyuki NONOMURA
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Patent number: 10784831Abstract: An output power control device includes: an attenuator to attenuate power of a high-frequency signal output from an oscillator; a high-frequency power amplifier to amplify the power of the high-frequency signal output from the attenuator; a monitor circuit to monitor the power of the high-frequency signal output from the high-frequency power amplifier; and a controller to control an attenuation amount of the attenuator based on the monitor signal output from the monitor circuit or based on attenuation amount setting data from a data unit. The oscillator generates the high-frequency signal in synchronization with a trigger signal. The controller starts control of the attenuation amount of the attenuator based on the attenuation amount setting data, in synchronization with the trigger signal, and, after receiving the monitor signal, the controller controls the attenuation amount of the attenuator based on the monitor signal.Type: GrantFiled: July 4, 2018Date of Patent: September 22, 2020Assignee: Mitsubishi Electric CorporationInventors: Jun Nishihara, Takuo Morimoto, Hiroyuki Nonomura, Norihiro Yunoue
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Patent number: 10673117Abstract: A waveguide circuit (1) includes a first waveguide tube (10), a second waveguide tube (20), and a third waveguide tube (30). The first waveguide tube (10), the second waveguide tube (20), and the third waveguide tube (30) have cross-sectional shapes to allow propagation of TE modes. The tube axis of the second waveguide tube (20) is parallel to the tube axis of the first waveguide tube (10). One of the narrow sidewalls of the second waveguide tube (20) faces a narrow sidewall (10s) of the first waveguide tube (10). The third waveguide tube (30) includes a coupler that connects a hollow guide of the third waveguide tube (30) to a hollow guide of the first waveguide tube (10) and a hollow guide of the second waveguide tube (20).Type: GrantFiled: March 22, 2016Date of Patent: June 2, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Akimichi Hirota, Takeshi Oshima, Naofumi Yoneda, Jun Nishihara, Hiroyuki Nonomura
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Publication number: 20200076408Abstract: A control circuit (16) is configured to detect the impedance P1 of a load (3) and control each of the reactance value L1 of a first variable reactance element (12), the reactance value L2 of a second variable reactance element (14), and the phase shift amount ? of a phase shifter (15) on the basis of the detected impedance P1. Consequently, impedance matching can be achieved even with the phase shifter (15) that performs discrete phase shift control.Type: ApplicationFiled: May 24, 2017Publication date: March 5, 2020Applicant: Mitsubishi Electric CorporationInventors: Dai NINOMIYA, Eigo KUWATA, Hiroyuki NONOMURA
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Publication number: 20200052669Abstract: An output power control device includes: an attenuator to attenuate power of a high-frequency signal output from an oscillator; a high-frequency power amplifier to amplify the power of the high-frequency signal output from the attenuator; a monitor circuit to monitor the power of the high-frequency signal output from the high-frequency power amplifier; and a controller to control an attenuation amount of the attenuator based on the monitor signal output from the monitor circuit or based on attenuation amount setting data from a data unit. The oscillator generates the high-frequency signal in synchronization with a trigger signal. The controller starts control of the attenuation amount of the attenuator based on the attenuation amount setting data, in synchronization with the trigger signal, and, after receiving the monitor signal, the controller controls the attenuation amount of the attenuator based on the monitor signal.Type: ApplicationFiled: July 4, 2018Publication date: February 13, 2020Applicant: Mitsubishi Electric CorporationInventors: Jun NISHIHARA, Takuo MORIMOTO, Hiroyuki NONOMURA, Norihiro YUNOUE
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Patent number: 10522894Abstract: A coaxial microstrip line conversion circuit includes: a waveguide including first and second through holes, spaced apart from each other, the second through hole having a dimension to cut off a used frequency; a coaxial connector including a central conductor including a projection projecting from an axial end of an outer conductor; and a microstrip line including a ground conductor provided on one surface of an insulating substrate, and a strip line provided on the other surface of the insulating substrate and including a projection projecting axially from the ground conductor. The outer conductor is connected to an outer wall of the waveguide. The projection of the central conductor is inserted through the first through hole into the waveguide, the ground conductor is connected to an inner wall of the second through hole, and the projection of the strip line is inserted through the second through hole into the waveguide.Type: GrantFiled: May 18, 2016Date of Patent: December 31, 2019Assignee: Mitsubishi Electric CorporationInventors: Jun Nishihara, Hiroyuki Nonomura, Toshihiro Fujii
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Publication number: 20190280665Abstract: An output power stabilization circuit includes: a first variable attenuator for attenuating a high-frequency signal inputted thereto; a second variable attenuator for attenuating the high-frequency signal outputted from the first variable attenuator; an output power detection circuit for monitoring the high-frequency signal outputted from the second variable attenuator and outputting an output power detection signal; a temperature monitoring circuit for outputting a temperature monitoring signal; a control circuit for outputting a first control signal for controlling the attenuation amount in the first variable attenuator and a second control signal for controlling the attenuation amount in the second variable attenuator, based on an output power setting signal and the temperature monitoring signal, by referring to previously stored table data; and an attenuation amount setting circuit for making comparison between the first control signal and the output power detection signal and outputting a first attenuatiType: ApplicationFiled: November 7, 2017Publication date: September 12, 2019Applicant: Mitsubishi Electric CorporationInventor: Hiroyuki NONOMURA
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Publication number: 20190158037Abstract: A cooler including a first surface on which a first high-frequency amplifier is installed in intimate contact therewith and a second surface which is opposite to the first surface and on which a second high-frequency amplifier is installed in intimate contact therewith. The first high-frequency amplifier amplifies a high-frequency signal and outputs an amplified high-frequency signal from an output terminal thereof. The second high-frequency amplifier amplifies a high-frequency signal and outputs an amplified high-frequency signal from an output terminal thereof. The cooler includes, on a third surface thereof, a first cooler terminal through which refrigerant flows into the cooler and a second cooler terminal through which the refrigerant flows out of the cooler.Type: ApplicationFiled: April 27, 2017Publication date: May 23, 2019Applicant: Mitsubishi Electric CorporationInventor: Hiroyuki NONOMURA
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Publication number: 20190058233Abstract: A waveguide circuit (1) includes a first waveguide tube (10), a second waveguide tube (20), and a third waveguide tube (30). The first waveguide tube (10), the second waveguide tube (20), and the third waveguide tube (30) have cross-sectional shapes to allow propagation of TE modes. The tube axis of the second waveguide tube (20) is parallel to the tube axis of the first waveguide tube (10). One of the narrow sidewalls of the second waveguide tube (20) faces a narrow sidewall (10s) of the first waveguide tube (10). The third waveguide tube (30) includes a coupler that connects a hollow guide of the third waveguide tube (30) to a hollow guide of the first waveguide tube (10) and a hollow guide of the second waveguide tube (20).Type: ApplicationFiled: March 22, 2016Publication date: February 21, 2019Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akimichi HIROTA, Takeshi OSHIMA, Naofumi YONEDA, Jun NISHIHARA, Hiroyuki NONOMURA
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Patent number: 10044329Abstract: A transmission module includes n oscillator modules and a phase command signal generator. Each of the oscillator modules includes a voltage controlled oscillator and an amplification circuit. The voltage controlled oscillators output transmission high-frequency signals having the same frequency and synchronized among the n oscillator modules by synchronous control based on a common reference signal. The amplification circuits each perform power amplification for the transmission high-frequency signal from a corresponding one of the voltage controlled oscillators and output the resultant signal. Phases of the transmission high-frequency signals synchronized among the n oscillator modules and output from the voltage controlled oscillators are separately controlled according to respective n phase command signals from the phase command signal generator.Type: GrantFiled: January 28, 2016Date of Patent: August 7, 2018Assignee: Mitsubishi Electric CorporationInventor: Hiroyuki Nonomura
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Publication number: 20180123210Abstract: A coaxial microstrip line conversion circuit includes: a waveguide including first and second through holes, spaced apart from each other, the second through hole having a dimension to cut off a used frequency; a coaxial connector including a central conductor including a projection projecting from an axial end of an outer conductor; and a microstrip line including a ground conductor provided on one surface of an insulating substrate, and a strip line provided on the other surface of the insulating substrate and including a projection projecting axially from the ground conductor. The outer conductor is connected to an outer wall of the waveguide. The projection of the central conductor is inserted through the first through hole into the waveguide, the ground conductor is connected to an inner wall of the second through hole, and the projection of the strip line is inserted through the second through hole into the waveguide.Type: ApplicationFiled: May 18, 2016Publication date: May 3, 2018Applicant: Mitsubishi Electric CorporationInventors: Jun NISHIHARA, Hiroyuki NONOMURA, Toshihiro FUJII
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Patent number: 9917559Abstract: An in-line waveguide divider divides power of an incoming high-frequency signal among openings. Amplification boards disposed on a base are provided for respective openings and are each connected in parallel with one another to the in-line waveguide divider. An in-line waveguide combiner includes openings formed correspondingly to the amplification boards, and is connected to the amplification boards. An electrically conductive amplifier cover includes walls formed to provide isolation between circuits of the amplification boards continuously from the in-line waveguide divider to the in-line waveguide combiner, and the entire surface of the amplification boards at the in-line waveguide combiner side is covered with the electrically conductive amplifier cover except openings and openings. Each of the amplification boards includes a waveguide-to-microstrip transition corresponding to the opening, an amplifier element, and a microstrip-to-waveguide transition corresponding to the opening.Type: GrantFiled: January 28, 2016Date of Patent: March 13, 2018Assignee: Mitsubishi Electric CorporationInventors: Hiroyuki Nonomura, Jun Nishihara, Toshihiro Fujii
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Publication number: 20170331439Abstract: A transmission module includes n oscillator modules and a phase command signal generator. Each of the oscillator modules includes a voltage controlled oscillator and an amplification circuit. The voltage controlled oscillators output transmission high-frequency signals having the same frequency and synchronized among the n oscillator modules by synchronous control based on a common reference signal. The amplification circuits each perform power amplification for the transmission high-frequency signal from a corresponding one of the voltage controlled oscillators and output the resultant signal. Phases of the transmission high-frequency signals synchronized among the n oscillator modules and output from the voltage controlled oscillators are separately controlled according to respective n phase command signals from the phase command signal generator.Type: ApplicationFiled: January 28, 2016Publication date: November 16, 2017Applicant: Mitsubishi Electric CorporationInventor: Hiroyuki NONOMURA
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Publication number: 20170244370Abstract: An in-line waveguide divider divides power of an incoming high-frequency signal among openings. Amplification boards disposed on a base are provided for respective openings and are each connected in parallel with one another to the in-line waveguide divider. An in-line waveguide combiner includes openings formed correspondingly to the amplification boards, and is connected to the amplification boards. An electrically conductive amplifier cover includes walls formed to provide isolation between circuits of the amplification boards continuously from the in-line waveguide divider to the in-line waveguide combiner, and the entire surface of the amplification boards at the in-line waveguide combiner side is covered with the electrically conductive amplifier cover except openings and openings. Each of the amplification boards includes a waveguide-to-microstrip transition corresponding to the opening, an amplifier element, and a microstrip-to-waveguide transition corresponding to the opening.Type: ApplicationFiled: January 28, 2016Publication date: August 24, 2017Applicant: Mitsubishi Electric CorporationInventors: Hiroyuki NONOMURA, Jun NISHIHARA, Toshihiro FUJII
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Patent number: 9543898Abstract: A microwave amplifier including: a bias circuit that includes a line having an electrical length of one quarter the wavelength at the frequency configured to be amplified by the microwave amplifier and being connected between the output terminal of an amplifier and a bias voltage source, and a capacitor connected between a terminal where the line is connected to the bias voltage source and a ground that defines the reference potential of the microwave amplifier; and a resonant circuit that includes a resistor and a capacitor connected in series between the ground and the terminal where the line is connected to the bias voltage source.Type: GrantFiled: September 13, 2013Date of Patent: January 10, 2017Assignee: Mitsubishi Electric CorporationInventors: Yoshinori Tsuyama, Hiroyuki Nonomura, Hiroshi Otsuka, Hifumi Noto, Yoshinori Yasunaga, Mitsuhiro Shimozawa, Yuichi Fujimoto
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Publication number: 20150222231Abstract: A microwave amplifier including: a bias circuit that includes a line having an electrical length of one quarter the wavelength at the frequency configured to be amplified by the microwave amplifier and being connected between the output terminal of an amplifier and a bias voltage source, and a capacitor connected between a terminal where the line is connected to the bias voltage source and a ground that defines the reference potential of the microwave amplifier; and a resonant circuit that includes a resistor and a capacitor connected in series between the ground and the terminal where the line is connected to the bias voltage source.Type: ApplicationFiled: September 13, 2013Publication date: August 6, 2015Applicant: Mitsubishi Electric CorporationInventors: Yoshinori Tsuyama, Hiroyuki Nonomura, Hiroshi Otsuka, Hifumi Noto, Yoshinori Yasunaga, Mitsuhiro Shimozawa, Yuichi Fujimoto