Patents by Inventor Shigeo Udagawa
Shigeo Udagawa 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: 20230361446Abstract: A waveguide-microstrip line converter includes a waveguide having an open end, a dielectric substrate having a first surface facing the open end and a second surface facing the opposite direction to the first surface, a ground conductor provided on the first surface and connected to the open end, the ground conductor being provided with a slot in a region enclosed by the end face of the open end, and a line conductor provided on the second surface. The line conductor includes a conversion section that performs power conversion between the line conductor and the waveguide, a microstrip line-provided at a distance from the conversion section in a first direction, and an impedance transformer provided between the conversion section and the microstrip line, for performing impedance matching between the conversion section and the microstrip line. A hole is formed in the conversion section.Type: ApplicationFiled: October 1, 2020Publication date: November 9, 2023Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Shigeo UDAGAWA, Mitsuru KIRITA
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Publication number: 20230361463Abstract: A method for calibrating a phased array antenna is provided. The phased array antenna includes multiple transmission modules each including a phase shifter that changes a phase of a high frequency signal output from a signal source, an amplifier that amplifies an amplitude of the high frequency signal, and a transmission antenna that converts the high frequency signal into a radio wave, and a reception module including a reception antenna. The method includes a step of receiving, by the reception antenna, a reflected wave that is a radio wave transmitted from the transmission antenna of each of the multiple transmission modules and reflected outside the phased array antenna, and a step of adjusting the phase shifter and the amplifier of each of the multiple transmission modules based on an amplitude and a phase of the reflected wave received.Type: ApplicationFiled: September 30, 2020Publication date: November 9, 2023Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Shigeo UDAGAWA, Mitsuru KIRITA, Tai TANAKA, Ryotaro OHASHI
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Publication number: 20230035534Abstract: A waveguide microstrip line converter includes: a waveguide; a dielectric substrate; a ground conductor provided with a slot; a line conductor; and a conductor located at a distance from the line conductor and adjacent to the line conductor. The line conductor includes a microstrip line, a conversion unit, a first impedance transforming unit, a second impedance transforming unit, and a third impedance transforming unit, the microstrip line having a first line width, the conversion unit being located immediately above the slot and having a second line width larger than the first line width, the first impedance transforming unit, the second impedance transforming unit, and the third impedance transforming unit extending in a first direction from the conversion unit and having a role in impedance matching between the microstrip line and the conversion unit. The conductor is adjacent to at least part of the conversion unit of the line conductor.Type: ApplicationFiled: March 6, 2020Publication date: February 2, 2023Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Shigeo UDAGAWA, Mitsuru KIRITA
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Patent number: 11555917Abstract: A radar device includes a transmission antenna and a reception antenna that is a structure different from the transmission antenna. The transmission antenna includes a single or a plurality of transmission element antennae and a transmission dielectric substrate where the single or the plurality of transmission element antennae is positioned, and a length in a first direction of the transmission antenna is longer than a length in a second direction of the transmission antenna, and the second direction is orthogonal to the first direction. The reception antenna includes a single or a plurality of reception element antennae and a reception dielectric substrate where the single or the plurality of reception element antennae is positioned, a length in a third direction of the reception antenna is longer than a length in a fourth direction of the reception antenna, and the fourth direction is orthogonal to the third direction.Type: GrantFiled: December 26, 2016Date of Patent: January 17, 2023Assignee: Mitsubishi Electric CorporationInventors: Takashi Maruyama, Masanori Ito, Michiaki Kasahara, Shigeo Udagawa
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Patent number: 11469511Abstract: A waveguide microstrip line converter includes a waveguide, a dielectric substrate, a ground conductor including a slot, and a line conductor. The line conductor includes a first section that is a microstrip line having a first line width, a conversion unit that is a second section positioned immediately above the slot and having a second line width greater than the first line width, and a third section extending from the second section in a first direction and performing impedance matching between the first section and the second section. One of the opposite ends of the third section in the first direction is connected to the second section. The first section extends in a second direction perpendicular to the first direction continuously from the other end of the opposite ends of the third section.Type: GrantFiled: January 10, 2018Date of Patent: October 11, 2022Assignee: Mitsubishi Electric CorporationInventors: Takashi Maruyama, Shigeo Udagawa
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Patent number: 11316273Abstract: A waveguide microstrip line converter includes a waveguide, a dielectric substrate, a ground conductor including a slot, and a line conductor. The line conductor includes a first section that is a microstrip line having a first line width, a conversion unit that is a second section positioned immediately above the slot and having a second line width greater than the first line width, and a third section extending from the second section in a first direction and performing impedance matching between the first section and the second section. One of the opposite ends of the third section in the first direction is connected to the second section. The first section extends in a second direction perpendicular to the first direction continuously from the other end of the opposite ends of the third section.Type: GrantFiled: August 30, 2018Date of Patent: April 26, 2022Assignee: Mitsubishi Electric CorporationInventors: Takashi Maruyama, Shigeo Udagawa
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Patent number: 11303003Abstract: A waveguide microstrip line converter includes a dielectric substrate, a ground conductor, and a line conductor. The ground conductor is provided on a first surface of the dielectric substrate and is joined to an open end that is an end portion of the waveguide. The slot is formed in a region surrounded by an opening edge portion of the open end of the ground conductor. The line conductor is provided on a second surface of the dielectric substrate. The line conductor includes first portions that are the microstrip lines, a second portion located just above the slot, and third portions responsible for impedance matching between the first portions and the second portion. The third portions each include an impedance transforming unit that is a portion having a wider line width than the first portions.Type: GrantFiled: June 30, 2017Date of Patent: April 12, 2022Assignee: Mitsubishi Electric CorporationInventors: Takashi Maruyama, Shigeo Udagawa
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Publication number: 20220069477Abstract: An antenna device includes a transmitting antenna including a transmission channel, a transmitting antenna including a transmission channel, a transmitting antenna including a transmission channel, a transmitting antenna including a transmission channel, and a receiving antenna including reception channels. An interval between the transmitting antenna and the transmitting antenna is wider than an overall width of the receiving antenna. An interval between the transmitting antenna and the transmitting antenna is narrower than an interval between adjacent channels among the reception channels.Type: ApplicationFiled: January 31, 2019Publication date: March 3, 2022Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Mitsuru KIRITA, Shigeo UDAGAWA
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Publication number: 20220026524Abstract: An antenna device includes a transmitting antenna including a transmission channel, a transmitting antenna including a transmission channel, a transmitting antenna including a transmission channel, a transmitting antenna including a transmission channel, and a receiving antenna including reception channels. An interval between the transmitting antenna and the transmitting antenna is wider than an overall width of the receiving antenna. An interval between the transmitting antenna and the transmitting antenna is narrower than an interval between adjacent channels among the reception channels.Type: ApplicationFiled: June 28, 2019Publication date: January 27, 2022Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Mitsuru KIRITA, Shigeo UDAGAWA
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Publication number: 20210376438Abstract: A waveguide microstrip line converter includes a waveguide, a dielectric substrate, a ground conductor including a slot, and a line conductor. The line conductor includes a first section that is a microstrip line having a first line width, a conversion unit that is a second section positioned immediately above the slot and having a second line width greater than the first line width, and a third section extending from the second section in a first direction and performing impedance matching between the first section and the second section. One of the opposite ends of the third section in the first direction is connected to the second section. The first section extends in a second direction perpendicular to the first direction continuously from the other end of the opposite ends of the third section.Type: ApplicationFiled: January 10, 2018Publication date: December 2, 2021Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Shigeo UDAGAWA
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Publication number: 20210288391Abstract: A waveguide microstrip line converter includes a dielectric substrate, a ground conductor, and a line conductor. The ground conductor is provided on a first surface of the dielectric substrate and is joined to an open end that is an end portion of the waveguide. The slot is formed in a region surrounded by an opening edge portion of the open end of the ground conductor. The line conductor is provided on a second surface of the dielectric substrate. The line conductor includes first portions that are the microstrip lines, a second portion located just above the slot, and third portions responsible for impedance matching between the first portions and the second portion. The third portions each include an impedance transforming unit that is a portion having a wider line width than the first portions.Type: ApplicationFiled: June 30, 2017Publication date: September 16, 2021Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Shigeo UDAGAWA
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Patent number: 10950951Abstract: Included are: a radar main unit for emitting a radar wave and receiving a reflection wave of the radar wave reflected by an object; and a dielectric substrate in which multiple matching layers each having a protruded shape are regularly arranged on one surface of the dielectric substrate, and the radar wave emitted from the radar main unit enters the multiple matching layers in a state where the other-surface side of the dielectric substrate is attached to a windshield.Type: GrantFiled: August 26, 2020Date of Patent: March 16, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tai Tanaka, Michio Takikawa, Takashi Maruyama, Shigeo Udagawa
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Publication number: 20200393537Abstract: Included are: a radar main unit for emitting a radar wave and receiving a reflection wave of the radar wave reflected by an object; and a dielectric substrate in which multiple matching layers each having a protruded shape are regularly arranged on one surface of the dielectric substrate, and the radar wave emitted from the radar main unit enters the multiple matching layers in a state where the other-surface side of the dielectric substrate is attached to a windshield.Type: ApplicationFiled: August 26, 2020Publication date: December 17, 2020Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Tai TANAKA, Michio TAKIKAWA, Takashi MARUYAMA, Shigeo UDAGAWA
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Publication number: 20200388926Abstract: A waveguide microstrip line converter includes a waveguide, a dielectric substrate, a ground conductor including a slot, and a line conductor. The line conductor includes a first section that is a microstrip line having a first line width, a conversion unit that is a second section positioned immediately above the slot and having a second line width greater than the first line width, and a third section extending from the second section in a first direction and performing impedance matching between the first section and the second section. One of the opposite ends of the third section in the first direction is connected to the second section. The first section extends in a second direction perpendicular to the first direction continuously from the other end of the opposite ends of the third section.Type: ApplicationFiled: August 30, 2018Publication date: December 10, 2020Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Shigeo UDAGAWA
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Patent number: 10637130Abstract: An antenna device includes an array antenna formed of five radiating elements arrayed on a dielectric substrate, and a feeder circuit that feeds a high frequency signal to the radiating elements making up the array antenna. The five radiating elements are arrayed on a first straight line drawn in a direction horizontal to the ground, and an excitation voltage of the radiating element positioned at the center of the array is set to be 2.2 times or more an average value of excitation voltages of the other radiating elements.Type: GrantFiled: December 15, 2016Date of Patent: April 28, 2020Assignee: Mitsubishi Electric CorporationInventor: Shigeo Udagawa
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Patent number: 10511102Abstract: A feeder circuit includes: a first line 103 having first and second ends; a second line 104 having first and second ends; a third line 105 having first and second ends; a first combiner 101 configured to combine signals output from the second ends of the first and second lines 103 and 104; a first coupling portion 115 configured to electrically couple portions of the first and third lines to each other; and a second coupling portion 116 configured to electrically couple portions of the second and third lines to each other in a manner that allows a signal reaching the first combiner from the first end of the third line through the first coupling portion and a signal reaching the first combiner from the first end of the third line through the second coupling portion, to be cancelled out.Type: GrantFiled: July 30, 2015Date of Patent: December 17, 2019Assignee: Mitsubishi Electric CorporationInventors: Akimichi Hirota, Naofumi Yoneda, Shigeo Udagawa, Mitsuru Kirita
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Publication number: 20190302254Abstract: A radar device includes a transmission antenna and a reception antenna that is a structure different from the transmission antenna. The transmission antenna includes a single or a plurality of transmission element antennae and a transmission dielectric substrate where the single or the plurality of transmission element antennae is positioned, and a length in a first direction of the transmission antenna is longer than a length in a second direction of the transmission antenna, and the second direction is orthogonal to the first direction. The reception antenna includes a single or a plurality of reception element antennae and a reception dielectric substrate where the single or the plurality of reception element antennae is positioned, a length in a third direction of the reception antenna is longer than a length in a fourth direction of the reception antenna, and the fourth direction is orthogonal to the third direction.Type: ApplicationFiled: December 26, 2016Publication date: October 3, 2019Applicant: Mitsubishi Electric CorporationInventors: Takashi MARUYAMA, Masanori ITO, Michiaki KASAHARA, Shigeo UDAGAWA
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Publication number: 20190123432Abstract: An antenna device includes an array antenna formed of five radiating elements arrayed on a dielectric substrate, and a feeder circuit that feeds a high frequency signal to the radiating elements making up the array antenna. The five radiating elements are arrayed on a first straight line drawn in a direction horizontal to the ground, and an excitation voltage of the radiating element positioned at the center of the array is set to be 2.2 times or more an average value of excitation voltages of the other radiating elements.Type: ApplicationFiled: December 15, 2016Publication date: April 25, 2019Applicant: Mitsubishi Electric CorporationInventor: Shigeo UDAGAWA
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Publication number: 20180309195Abstract: An antenna device includes an array antenna formed of five radiating elements arrayed on a dielectric substrate, and a feeder circuit that feeds a high frequency signal to the radiating elements making up the array antenna. The five radiating elements are arrayed on a first straight line drawn in a direction horizontal to the ground, and an excitation voltage of the radiating element positioned at the center of the array is set to be twice or more an average value of excitation voltages of the other radiating elements.Type: ApplicationFiled: June 17, 2016Publication date: October 25, 2018Applicant: Mitsubishi Electric CorporationInventor: Shigeo UDAGAWA
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Publication number: 20180145423Abstract: A feeder circuit includes: a first line 103 having first and second ends; a second line 104 having first and second ends; a third line 105 having first and second ends; a first combiner 101 configured to combine signals output from the second ends of the first and second lines 103 and 104; a first coupling portion 115 configured to electrically couple portions of the first and third lines to each other; and a second coupling portion 116 configured to electrically couple portions of the second and third lines to each other in a manner that allows a signal reaching the first combiner from the first end of the third line through the first coupling portion and a signal reaching the first combiner from the first end of the third line through the second coupling portion, to be cancelled out.Type: ApplicationFiled: July 30, 2015Publication date: May 24, 2018Applicant: Mitsubishi Electric CorporationInventors: Akimichi HIROTA, Naofumi YONEDA, Shigeo UDAGAWA, Mitsuru KIRITA