Patents by Inventor Tamotsu Nishino
Tamotsu Nishino 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: 9543659Abstract: A reflector antenna device is configured to include a main reflector 1 that has a rectangular aperture shape 2, and a primary radiator 3 that radiates a beam having a rectangular shape similar to the aperture shape 2 of the main reflector 1 onto the main reflector 1. As the primary radiator 3, a multimode horn antenna, an active phased array antenna, or the like can be used. As a result, the degree of freedom of reflector shaping can be improved without causing reduction in efficiency.Type: GrantFiled: March 27, 2013Date of Patent: January 10, 2017Assignee: Mitsubishi Electric CorporationInventors: Michio Takikawa, Yoshio Inasawa, Tamotsu Nishino
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Publication number: 20150207237Abstract: A reflector antenna device is configured to include a main reflector 1 that has a rectangular aperture shape 2, and a primary radiator 3 that radiates a beam having a rectangular shape similar to the aperture shape 2 of the main reflector 1 onto the main reflector 1. As the primary radiator 3, a multimode horn antenna, an active phased array antenna, or the like can be used. As a result, the degree of freedom of reflector shaping can be improved without causing reduction in efficiency.Type: ApplicationFiled: March 27, 2013Publication date: July 23, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Michio Takikawa, Yoshio Inasawa, Tamotsu Nishino
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Patent number: 8145123Abstract: A beam forming apparatus of a satellite is configured to: define a perimeter of a coverage area, and define a coordinate grid of a polar coordinate system so as to divide the coverage area into a plurality of small areas; calculate coordinates of borders between basic cells in a Cartesian coordinate system, the basic cells being shaped into regular hexagons arranged to be in contact with one another along their sides and at their vertices or into circles circumscribing the regular hexagons; define a plurality of new cells by converting, through coordinate transformation, the coordinates of the borders between the basic cells in the Cartesian coordinate system into coordinates of borders in the polar coordinate system; and set amplitudes and phases to the plurality of antenna devices that are suitable to form a plurality of beams in respective directions of the plurality of new cells.Type: GrantFiled: November 10, 2009Date of Patent: March 27, 2012Assignee: Mitsubishi Electric CorporationInventors: Shinichi Yamamoto, Tamotsu Nishino, Izuru Naito, Yoshihiko Konishi
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Publication number: 20110212681Abstract: A beam forming apparatus of a satellite is configured to: define a perimeter of a coverage area, and define a coordinate grid of a polar coordinate system so as to divide the coverage area into a plurality of small areas; calculate coordinates of borders between basic cells in a Cartesian coordinate system, the basic cells being shaped into regular hexagons arranged to be in contact with one another along their sides and at their vertices or into circles circumscribing the regular hexagons; define a plurality of new cells by converting, through coordinate transformation, the coordinates of the borders between the basic cells in the Cartesian coordinate system into coordinates of borders in the polar coordinate system; and set amplitudes and phases to the plurality of antenna devices that are suitable to form a plurality of beams in respective directions of the plurality of new cells.Type: ApplicationFiled: November 10, 2009Publication date: September 1, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shinichi Yamamoto, Tamotsu Nishino, Izuru Naito, Yoshihiko Konishi
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Patent number: 7894205Abstract: There is provided a variable device circuit according to the present invention, including: a substrate; at least one movable switch device formed on a first principal surface of the substrate; at least one fixed capacitor device formed on the first principal surface of the substrate; at least one variable capacitor device formed on the first principal surface of the substrate; at least one variable inductor device formed on the first principal surface of the substrate; and wiring lines for electrically connecting the devices to one another, the wiring lines being formed on the first principal surface of the substrate; wherein electrical connections among the devices can be selected by operation of the movable switch device, whereby achieving stable, low-loss circuit characteristics with lower manufacturing cost.Type: GrantFiled: March 20, 2008Date of Patent: February 22, 2011Assignee: Mitsubishi Electric CorporationInventors: Sangseok Lee, Yukihisa Yoshida, Tamotsu Nishino, Hiromoto Inoue, Shinnosuke Soda, Moriyasu Miyazaki
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Patent number: 7675383Abstract: A switch circuit includes: a first input and output terminal; a first inductor connected with the first input and output terminal; a capacitor connected with the first inductor; a second input and output terminal connected with the capacitor; a first MEMS switch connected with one end of the capacitor; a second MEMS switch connected with the other end of the capacitor; and a second inductor connected between the first MEMS switch and the second MEMS switch, and satisfies a relationship of f=1/(2??CL1)=1/(2??CL2), where L1 is an inductance of the first inductor, L2 is an inductance of the second inductor, C is a capacitance of the capacitor, and f is a use frequency.Type: GrantFiled: January 27, 2005Date of Patent: March 9, 2010Assignee: Mitsubishi Electric CorporationInventors: Masatake Hangai, Tamotsu Nishino, Shinnosuke Soda, Kenichi Miyaguchi, Kenji Kawakami, Masaomi Tsuru, Satoshi Hamano, Moriyasu Miyazaki, Tadashi Takagi
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Patent number: 7612633Abstract: The present invention provides a high-frequency switch including: a first switching element connected between a first input/output terminal and a second input/output terminal; a second switching element connected between the second input/output terminal and the first switching element; a high-frequency line provided between the first input/output terminal, the first switching element, and a third input/output terminal; and a third switching element connected between the third input/output terminal, the high-frequency line, and a ground. By connecting the first switching element, the second switching element, the high-frequency line, and the third switching element, because there exists no FET through which a large current flows when a state between the first input/output terminal and the third input/output terminal is set to a transmission state which requires high power handling capability, there is no need to use an FET having a large gate width, which is effective in reducing a loss of the switch.Type: GrantFiled: May 15, 2007Date of Patent: November 3, 2009Assignee: Mitsubishi Electric CorporationInventors: Masatake Hangai, Yukinobu Tarui, Tamotsu Nishino, Yoshitsugu Yamamoto, Moriyasu Miyazaki, Yoji Isota
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Publication number: 20090231058Abstract: Provided is a band-pass filter having a small phase change in a pass band and a steep frequency characteristic. The band-pass filter includes: a four-terminal pair 90-degree hybrid circuit (10) for distributing power into two directions with a phase difference of 90 degrees; and a band elimination filter circuit including a plurality of unit circuits (15) and (16) connected to each other, each of the plurality of unit circuits including a series circuit of a coil and a capacitor and a parallel circuit of a coil and a capacitor, which are connected with each other, input terminals of the plurality of unit circuits being connected with coupling terminals (13) and (14) of the hybrid circuit (10) and output terminals of the plurality of unit circuits being terminated with resistors having impedance values equal to an output impedance.Type: ApplicationFiled: July 18, 2006Publication date: September 17, 2009Inventors: Tamotsu Nishino, Moriyasu Miyazaki, Hiromitsu Uchida
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Patent number: 7541894Abstract: A phase-shifting circuit includes: a first parallel circuit which is connected across input and output terminals of a high frequency signal, composed of a first inductor and a first switching element that exhibits a through state in an ON state and a capacitive property in an OFF state, and produces parallel resonance at a prescribed frequency when the first switching element is in the OFF state; a series circuit composed of a second inductor and a third inductor and connected in parallel with the first parallel circuit; a capacitor having its first terminal connected to a point of connection of the second and third inductors; and a second parallel circuit which is connected across a second terminal of the capacitor and a ground, composed of a fourth inductor and a second switching element that exhibits a through state in an ON state and a capacitive property in an OFF state, and produces parallel resonance at a prescribed frequency when the second switching element is in the OFF state.Type: GrantFiled: July 27, 2004Date of Patent: June 2, 2009Assignee: Mitsubishi Electric CorporationInventors: Kenichi Miyaguchi, Morishige Hieda, Tamotsu Nishino, Masatake Hangai, Moriyasu Miyazaki, Yukihisa Yoshida, Tadashi Takagi, Mikio Hatamoto
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Patent number: 7495529Abstract: Provided is a small-size phase shift circuit having a broad band characteristic. The phase shift circuit includes: a first switching element for switching between a through path and a capacitance capacity; a second switching element for switching the capacitance capacity for the through path and the ground; and a first and a second inductor having inductance. One end of the first switching element is connected to one end of the second switching element by the first inductor while the other ends of the first and the second switching element are connected to each other by the second inductor. One end of the first switching element is connected to a high-frequency signal input terminal while the other end of the first switching element is connected to a high-frequency signal output terminal. Thus, it is possible to constitute a phase device satisfying a predetermined condition.Type: GrantFiled: March 26, 2004Date of Patent: February 24, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kenichi Miyaguchi, Morishige Hieda, Tamotsu Nishino, Masatake Hangai, Moriyasu Miyazaki, Norihiro Yunoue, Hideki Hatakeyama, Yukihisa Yoshida, Tadashi Takagi
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Publication number: 20090027138Abstract: A switch circuit including: a plurality of MEMS switches connected in parallel or in series, which have different drive voltages; and a single voltage supply for driving the plurality of MEMS switches by the plurality of drive voltages, is used for a microwave circuit or an antenna circuit, to vary a configuration of the microwave circuit or the antenna circuit based on the drive voltage value. That is, the configuration of the microwave circuit or the antenna circuit can be varied based on the drive voltage value by using the switch circuit including the MEMS switches having the different drive voltages for the microwave circuit or the antenna circuit.Type: ApplicationFiled: March 29, 2005Publication date: January 29, 2009Inventors: Tamotsu Nishino, Masatake Hangai, Yukihisa Yoshida, Shinichi Izuo, Hirokazu Taketomi, Tomohiro Takahashi, Kenichiro Kodama, Kazushi Nishizawa, Yoko Koga, Araki Ohno, Shinnosuke Soda, Moriyasu Miyazaki, Kenichi Miyaguchi
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Publication number: 20080247115Abstract: There is provided a variable device circuit according to the present invention, including: a substrate; at least one movable switch device formed on a first principal surface of the substrate; at least one fixed capacitor device formed on the first principal surface of the substrate; at least one variable capacitor device formed on the first principal surface of the substrate; at least one variable inductor device formed on the first principal surface of the substrate; and wiring lines for electrically connecting the devices to one another, the wiring lines being formed on the first principal surface of the substrate; wherein electrical connections among the devices can be selected by operation of the movable switch device, whereby achieving stable, low-loss circuit characteristics with lower manufacturing cost.Type: ApplicationFiled: March 20, 2008Publication date: October 9, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Sangseok LEE, Yukihisa Yoshida, Tamotsu Nishino, Hiromoto Inoue, Shinnosuke Soda, Moriyasu Miyazaki
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Publication number: 20080136557Abstract: A switch circuit includes: a first input and output terminal; a first inductor connected with the first input and output terminal; a capacitor connected with the first inductor; a second input and output terminal connected with the capacitor; a first MEMS switch connected with one end of the capacitor; a second MEMS switch connected with the other end of the capacitor; and a second inductor connected between the first MEMS switch and the second MEMS switch, and satisfies a relationship of f=1/(2??CL1)=1/(2??CL2), where L1 is an inductance of the first inductor, L2 is an inductance of the second inductor, C is a capacitance of the capacitor, and f is a use frequency.Type: ApplicationFiled: January 27, 2005Publication date: June 12, 2008Inventors: Masatake Hangai, Tamotsu Nishino, Shinnosuke Soda, Kenichi Miyaguchi, Kenji Kawakami, Masaomi Tsuru, Satoshi Hamano, Moriyasu Miyazaki, Tadashi Takagi
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Publication number: 20080106353Abstract: The present invention provides a high-frequency switch including: a first switching element connected between a first input/output terminal and a second input/output terminal; a second switching element connected between the second input/output terminal and the first switching element; a high-frequency line provided between the first input/output terminal, the first switching element, and a third input/output terminal; and a third switching element connected between the third input/output terminal, the high-frequency line, and a ground. By connecting the first switching element, the second switching element, the high-frequency line, and the third switching element, because there exists no FET through which a large current flows when a state between the first input/output terminal and the third input/output terminal is set to a transmission state which requires high power handling capability, there is no need to use an FET having a large gate width, which is effective in reducing a loss of the switch.Type: ApplicationFiled: May 15, 2007Publication date: May 8, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masatake Hangai, Yukinobu Tarui, Tamotsu Nishino, Yoshitsugu Yamamoto, Moriyasu Miyazaki, Yoji Isota
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Publication number: 20070273456Abstract: A phase-shifting circuit includes: a first parallel circuit which is connected across input and output terminals of a high frequency signal, composed of a first inductor and a first switching element that exhibits a through state in an ON state and a capacitive property in an OFF state, and produces parallel resonance at a prescribed frequency when the first switching element is in the OFF state; a series circuit composed of a second inductor and a third inductor and connected in parallel with the first parallel circuit; a capacitor having its first terminal connected to a point of connection of the second and third inductors; and a second parallel circuit which is connected across a second terminal of the capacitor and a ground, composed of a fourth inductor and a second switching element that exhibits a through state in an ON state and a capacitive property in an OFF state, and produces parallel resonance at a prescribed frequency when the second switching element is in the OFF state.Type: ApplicationFiled: July 27, 2004Publication date: November 29, 2007Inventors: Kenichi Miyaguchi, Morishige Hieda, Tamotsu Nishino, Masatake Hangai, Moriyasu Miyazaki, Yukihisa Yoshida, Tadashi Takagi, Mikio Hatamoto
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Patent number: 7285841Abstract: In a signal processing apparatus for transmitting or processing a signal, a substrate has a recessed portion in a surface of the substrate, a first interconnecting conductor is on the substrate, including at least the recessed portion of the substrate, and a dielectric support film is on the substrate opposite the recessed portion of the substrate with an air space between the dielectric support film and the substrate. A second interconnecting conductor is on a part of a surface of the dielectric support film. The apparatus has a simple structure and reduced transmission loss and can be made in a simple manufacturing process.Type: GrantFiled: February 24, 2006Date of Patent: October 23, 2007Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yukihisa Yoshida, Tamotsu Nishino, Yoshiyuki Suehiro, Sangseok Lee, Kenichi Miyaguchi, Jiwei Jiao
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Publication number: 20070188264Abstract: Provided is a small-size phase shift circuit having a broad band characteristic. The phase shift circuit includes: a first switching element for switching between a through path and a capacitance capacity; a second switching element for switching the capacitance capacity for the through path and the ground; and a first and a second inductor having inductance. One end of the first switching element is connected to one end of the second switching element by the first inductor while the other ends of the first and the second switching element are connected to each other by the second inductor. One end of the first switching element is connected to a high-frequency signal input terminal while the other end of the first switching element is connected to a high-frequency signal output terminal. Thus, it is possible to constitute a phase device satisfying a predetermined condition.Type: ApplicationFiled: March 26, 2004Publication date: August 16, 2007Inventors: Kenichi Miyaguchi, Morishige Hieda, Tamotsu Nishino, Masatake Hangai, Moriyasu Miyazaki, Norihiro Yunoue, Hideki Hatakeyama, Yukihisa Yoshida, Tadashi Takagi
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Publication number: 20060145789Abstract: In a signal processing apparatus for transmitting or processing a signal, a substrate has a recessed portion in a surface of the substrate, a first interconnecting conductor is on the substrate, including at least the recessed portion of the substrate, and a dielectric support film is on the substrate opposite the recessed portion of the substrate with an air space sand between the dielectric support film and the substrate. A second interconnecting conductor is on a part of a surface of the dielectric support film. The apparatus has a simple structure and reduced transmission loss and can be made in a simple manufacturing process.Type: ApplicationFiled: February 24, 2006Publication date: July 6, 2006Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Yukihisa Yoshida, Tamotsu Nishino, Yoshiyuki Suehiro, Sangseok Lee, Kenichi Miyaguchi, Jiwei Jiao
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Patent number: 7030721Abstract: In a high frequency apparatus for transmitting or processing a high frequency signal, a substrate has a recessed portion in a surface of the substrate, a first interconnecting conductor is on the substrate, including at least the recessed portion of the substrate, and a dielectric support film is on the substrate opposite the recessed portion of the substrate with an air space between the dielectric support film and the substrate. A second interconnecting conductor is on a part of a surface of the dielectric support film. The high frequency apparatus has a simple structure and reduced transmission loss and can be made in a simple manufacturing process.Type: GrantFiled: April 24, 2003Date of Patent: April 18, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yukihisa Yoshida, Tamotsu Nishino, Yoshiyuki Suehiro, Sangseok Lee, Kenichi Miyaguchi, Jiwei Jiao
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Publication number: 20030201851Abstract: In a high frequency apparatus for transmitting or processing a high frequency signal, a substrate having a recessed portion is formed in a surface of the substrate, a first interconnecting conductor is formed on the substrate including at least the recessed portion of the substrate, and a dielectric support film is formed on the substrate above the recessed portion of the substrate with an air space sandwiched between the dielectric support film and the substrate. A second interconnecting conductor is formed on a part of a surface of the dielectric support film. The high frequency apparatus has a simple structure and a reduced transmission loss and capable of being made by a simple manufacturing process.Type: ApplicationFiled: April 24, 2003Publication date: October 30, 2003Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Yukihisa Yoshida, Tamotsu Nishino, Yoshiyuki Suehiro, Sangseok Lee, Kenichi Miyaguchi, Jiwei Jiao