Patents by Inventor Yuuji Kakuya
Yuuji Kakuya 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: 12183973Abstract: An antenna device includes a ground plate which is a flat plate-shaped conductor member, an opposing conductive plate which is a flat plate-shaped conductor member installed at a predetermined distance from the ground plate and is electrically connected to a power supply line, and a plurality of short-circuit pins for electrically connecting the opposing conductive plate and the ground plate. One end of a plurality of short-circuit pins extends to a conductive plate plane, which is a plane including the opposing conductive plate, and the other end of the plurality of short-circuit pins extends to the ground plate plane, which is a plane including the ground plate. One or more of the plurality of short-circuit pins connect the opposing conductive plate and the ground plate.Type: GrantFiled: October 24, 2022Date of Patent: December 31, 2024Assignee: DENSO CORPORATIONInventors: Yuuji Kakuya, Masakazu Ikeda, Kenichirou Sanji, Tomokazu Miyashita, Ryozou Fujii, Masashi Urabe, Hiromichi Naitoh
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Patent number: 12166294Abstract: An antenna device includes a ground plate made of a flat conductor member, and an opposing conductive plate, which is a flat conductor member placed at a predetermined distance from the ground plate and electrically connected to a power supply line, a short-circuit portion provided in a central region of the opposing conductive plate for electrically connecting the opposing conductive plate and the ground plate. An operating frequency is a frequency at which an inductance of the short-circuit portion and the capacitance formed by the ground plate and the opposing conductive plate resonate in parallel. The short-circuit portion has a perimeter part that is short-circuited with the opposing conductive plate. A circuit is arranged in an area surrounded by a part where a short-circuit portion is short-circuited on the opposing conductive plate.Type: GrantFiled: January 24, 2023Date of Patent: December 10, 2024Assignee: DENSO CORPORATIONInventors: Yuuji Kakuya, Kenichirou Sanji
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Patent number: 12142852Abstract: An antenna device includes: a ground plate; an opposing conductive plate provided with a power supply point installed at a predetermined distance from the ground plate; and a short-circuit portion provided in a central region of the opposing conductive plate and electrically connecting the opposing conductive plate and the ground plate. A parallel resonance at a predetermined target frequency is generated by an inductance provided in the short-circuit portion and a capacitance between the ground plate and the opposing conductive plate; and the ground plate is arranged asymmetrically with respect to the opposing conductive plate.Type: GrantFiled: September 20, 2021Date of Patent: November 12, 2024Assignees: DENSO CORPORATION, SOKEN, INC.Inventors: Masakazu Ikeda, Yuuji Kakuya, Kenichiro Sanji, Nobuyasu Okabe
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Publication number: 20240322437Abstract: A conductive pattern, as an antenna, includes: a radiating element formed in an inverted F shape; and a feeding element for indirectly feeding power to the radiating element. The radiating element includes a main body, a short circuit part, and a powered part. The main body is a member longer than the short circuit part and the powered part. The short circuit part is connected to the main body at right angle at one end of the main body. The powered part extends from a middle of the main body in a direction perpendicular to the main body so as to have a predetermined distance from, for example, the short circuit part. The feeding element is formed to face the powered part below the powered part.Type: ApplicationFiled: June 5, 2024Publication date: September 26, 2024Inventors: Tatsuya INAGAKI, Yuuji KAKUYA, Yohei NAKAKURA
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Patent number: 12080961Abstract: An antenna device includes: a first antenna having a directional gain at a low elevation angle higher than the directional gain at a high elevation angle; a second antenna having the directional gain at the high elevation angle higher than the first antenna, transmitting and receiving a radio wave having a vibration direction of an electric field intersecting with a radio wave transmitted and received by the first antenna; and a third antenna having the directional gain at the high elevation angle higher than the first antenna, and transmitting and receiving a radio wave having a vibration direction of an electric field intersecting with the radio wave transmitted and received by the second antenna.Type: GrantFiled: November 7, 2022Date of Patent: September 3, 2024Assignee: DENSO CORPORATIONInventors: Youhei Sekiya, Yuzi Sugimoto, Masakazu Ikeda, Yuuji Kakuya, Ryuichi Arai, Shirou Koide, Takuya Yamashita, Hiroyuki Izumi
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Patent number: 12013476Abstract: A positioning system executes wireless communication with a portable terminal by adopting a radio wave of 1 GHz or higher to determine a position of the portable terminal relative to a vehicle. The positioning system includes a vehicle exterior communication device and a positioning device. The positioning device determines whether the portable terminal exists at an exterior operating area being a region outside a vehicle compartment within a predetermined operating distance from the vehicle, based on a reception status of the wireless signal received by the vehicle exterior communication device from the portable terminal in a first mode of the vehicle exterior communication device, and determines whether the portable terminal exists inside the vehicle compartment, based on the reception status of the wireless signal received by the vehicle exterior communication device from the portable terminal in a second mode of the vehicle exterior communication device.Type: GrantFiled: October 22, 2021Date of Patent: June 18, 2024Assignee: DENSO CORPORATIONInventors: Kenichirou Sanji, Nobuyasu Okabe, Masakazu Ikeda, Yuuji Kakuya
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Patent number: 12009609Abstract: An antenna device includes: a ground plate made of a conductor with a flat plate shape; an opposing conductive plate made of another conductor with a flat plate shape, arranged to space apart from the ground plate by a predetermined distance, and having a power supply point electrically connected to a power supply line; a short-circuit portion electrically connecting the opposing conductive plate and the ground plate; and a radio wave shield body for shielding a propagation of an electric field, which is arranged on an upper side of the opposing conductive plate and is made of a conductor or a dielectric material. Parallel resonance at a predetermined target frequency is generated by an inductance provided in the short-circuit portion and a capacitance between the ground plate and the opposing conductive plate.Type: GrantFiled: September 24, 2021Date of Patent: June 11, 2024Assignees: DENSO CORPORATION, SOKEN, INC.Inventors: Masakazu Ikeda, Yuuji Kakuya, Kenichiro Sanji, Nobuyasu Okabe, Hiroyuki Izumi
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Patent number: 11936089Abstract: A transmission line assembly is configured such that (i) a first target inner layer is one of second to (N?1)-th pattern layers selected therefrom, and (ii) a second target inner layer is another one of the second to (N?1)-th pattern layers selected therefrom; the second to (N?1)-th pattern layers except for the first and second target inner layers are referred to as inner layers. The transmission line assembly includes band-like first and second slits formed through the ground pattern of a corresponding one of the first and second target inner layers to expose a part of one of dielectric layers; the one of the dielectric layers is adjacent to the corresponding one of the first and second target inner layers. Each of the first and second slits has an edge facing the interlayer line, and the edge of each of the first and second slits is concavely curved toward the interlayer line.Type: GrantFiled: July 8, 2021Date of Patent: March 19, 2024Assignee: DENSO CORPORATIONInventors: Yuuji Kakuya, Kazuhiro Aoki, Yusuke Tainaka
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Publication number: 20230335907Abstract: A wireless communication device for transmitting and receiving radio waves of a target frequency includes a ground plate having a rectangular shape, a zeroth-order resonant antenna element arranged at a position shifted from a center of the ground plate in a lengthwise direction of the ground plate, and a circuit module configured to transmit and receive signal via the zeroth-order resonant antenna element. The zeroth-order resonant antenna element includes a counter conductor plate arranged at a predetermined distance from the ground plate and having a feed point connected to a feedline, and a short circuit portion electrically connecting the counter conductor plate and the ground plate. The ground plate, the counter conductor plate and the short circuit portion are configured to cause parallel resonance at the target frequency and satisfy a condition that resonance caused by the ground plate is reduced.Type: ApplicationFiled: June 20, 2023Publication date: October 19, 2023Inventors: Yuuji KAKUYA, Masakazu IKEDA, Kenichiro SANJI, Tomokazu MIYASHITA, Ryozo FUJII, Masashi URABE, Hiromichi NAITO
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Publication number: 20230336256Abstract: A vehicle unit installable and usable in a vehicle, includes, at least one vehicle antenna transmitting and receiving a high-frequency signal, which is a signal carried on a high-frequency radio wave, and the vehicle antenna includes, a vertically polarized wave antenna capable of transmitting and receiving a polarized wave orthogonal to a target surface, which is a metal surface at a predetermined part of the vehicle, and first and second horizontally polarized wave antennas each capable of transmitting and receiving polarized waves that are horizontal to the target surface and mutually orthogonally polarized.Type: ApplicationFiled: June 16, 2023Publication date: October 19, 2023Inventors: Youhei SEKIYA, Kenichiro SANJI, Yuuji KAKUYA
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Publication number: 20230114784Abstract: An antenna mounting system includes an antenna device and a conductive base plate. The antenna device includes a ground plate, an opposing conductive plate, and a short-circuit pin. The short-circuit pin is positioned to cause a radio wave radiated from the antenna device in a direction perpendicular to the ground plate such that radio wave: has a polarization component that oscillates in a direction parallel to a main plane of polarization of a radio wave radiated from the conductive base plate in the direction perpendicular to the ground plate; and is shifted in phase from the radio wave radiated from the conductive base plate by a phase difference within a range from 90 degrees to 270 degrees.Type: ApplicationFiled: December 12, 2022Publication date: April 13, 2023Inventors: Yuuji KAKUYA, Kenichirou SANJI, Tomokazu MIYASHITA, Masakazu IKEDA
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Publication number: 20230092857Abstract: An antenna device includes a ground plate and an antenna element. The ground plate is a conductor member with a flat rectangular shape. The antenna element is a conductor member having a feed point electrically connected to a feeder line. A length of the ground plate in a predetermined direction is shorter than a target wavelength that is a wavelength of a radio wave to be transmitted or received. The ground plate is connected to a grounding cable at a connection position on the ground plate. The connection position is shifted from an edge of the ground plate by an odd multiple of ΒΌ of the target wavelength.Type: ApplicationFiled: November 28, 2022Publication date: March 23, 2023Inventors: Yuuji KAKUYA, Masakazu IKEDA, Kenichirou SANJI, Tomokazu MIYASHITA, Ryozou FUJII
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Publication number: 20230066781Abstract: An antenna device includes: a first antenna having a directional gain at a low elevation angle higher than the directional gain at a high elevation angle; a second antenna having the directional gain at the high elevation angle higher than the first antenna, transmitting and receiving a radio wave having a vibration direction of an electric field intersecting with a radio wave transmitted and received by the first antenna; and a third antenna having the directional gain at the high elevation angle higher than the first antenna, and transmitting and receiving a radio wave having a vibration direction of an electric field intersecting with the radio wave transmitted and received by the second antenna.Type: ApplicationFiled: November 7, 2022Publication date: March 2, 2023Inventors: Youhei SEKIYA, Yuzi SUGIMOTO, Masakazu IKEDA, Yuuji KAKUYA, Ryuichi ARAI, Shirou KOIDE, Takuya YAMASHITA, Hiroyuki IZUMI
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Publication number: 20230039277Abstract: An antenna device includes a ground plate which is a flat plate-shaped conductor member, an opposing conductive plate which is a flat plate-shaped conductor member installed at a predetermined distance from the ground plate and is electrically connected to a power supply line, and a plurality of short-circuit pins for electrically connecting the opposing conductive plate and the ground plate. One end of a plurality of short-circuit pins extends to a conductive plate plane, which is a plane including the opposing conductive plate, and the other end of the plurality of short-circuit pins extends to the ground plate plane, which is a plane including the ground plate. One or more of the plurality of short-circuit pins connect the opposing conductive plate and the ground plate.Type: ApplicationFiled: October 24, 2022Publication date: February 9, 2023Inventors: Yuuji KAKUYA, Masakazu IKEDA, Kenichirou SANJI, Tomokazu MIYASHITA, Ryozou FUJII, Masashi URABE, Hiromichi NAITOH
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Patent number: 11445600Abstract: A signal via has a via diameter that causes a high-frequency signal to be propagated through a high-frequency transmission line causing multi mode propagation (multi-mode interference propagation). At least one of the inter-via distance between the signal via and respective ground vias, the via diameter, and the thickness of the multilayer substrate is determined to introduce the high-frequency signal from the interlayer transmission line to the signal lines in the high-intensity region of the multi mode propagation.Type: GrantFiled: April 22, 2020Date of Patent: September 13, 2022Assignees: SOKEN, INC., DENSO CORPORATIONInventors: Kazumasa Sakurai, Kazuya Wakita, Yuuji Kakuya
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Patent number: 11271310Abstract: An antenna device includes a ground plate that is a conductive member having a plate shape, a patch section that is a conductive member having a plate shape and is disposed in parallel with the ground plate with a predetermined interval so as to face the ground plate, a plurality of first short-circuit vias each having an axial center disposed on a circumference of a via arrangement circle located in a center portion of the patch section and each having a first end connected with the patch section and a second end connected with the ground plate, and at least one second short-circuit via having an axial center disposed at a position different from the circumference of the via arrangement circle and having a first end connected with the patch section and a second end connected with the ground plate.Type: GrantFiled: April 6, 2020Date of Patent: March 8, 2022Assignee: DENSO CORPORATIONInventors: Yuuji Kakuya, Hidenori Akita, Masakazu Ikeda, Kenichirou Sanji, Hiroyuki Izumi
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Publication number: 20220043100Abstract: A positioning system executes wireless communication with a portable terminal by adopting a radio wave of 1 GHz or higher to determine a position of the portable terminal relative to a vehicle. The positioning system includes a vehicle exterior communication device and a positioning device. The vehicle exterior communication device is disposed at an outer surface portion at least one of a side surface portion or a rear side surface portion of the vehicle, and includes an antenna receiving a wireless signal transmitted from the portable terminal. The positioning device determines whether or not the portable terminal exists at an exterior operating area being a region outside a vehicle compartment within a predetermined operating distance from the vehicle, based on a reception status of the wireless signal received by the vehicle exterior communication device from the portable terminal. The antenna radiates a main polarized wave and a cross-polarized wave.Type: ApplicationFiled: October 22, 2021Publication date: February 10, 2022Inventors: Kenichirou SANJI, Nobuyasu OKABE, Masakazu IKEDA, Yuuji KAKUYA
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Publication number: 20220043101Abstract: A positioning system executes wireless communication with a portable terminal by adopting a radio wave of 1 GHz or higher to determine a position of the portable terminal relative to a vehicle. The positioning system includes a vehicle exterior communication device and a positioning device. The positioning device determines whether the portable terminal exists at an exterior operating area being a region outside a vehicle compartment within a predetermined operating distance from the vehicle, based on a reception status of the wireless signal received by the vehicle exterior communication device from the portable terminal in a first mode of the vehicle exterior communication device, and determines whether the portable terminal exists inside the vehicle compartment, based on the reception status of the wireless signal received by the vehicle exterior communication device from the portable terminal in a second mode of the vehicle exterior communication device.Type: ApplicationFiled: October 22, 2021Publication date: February 10, 2022Inventors: Kenichirou SANJI, Nobuyasu OKABE, Masakazu IKEDA, Yuuji KAKUYA
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Publication number: 20220013913Abstract: An antenna device includes: a ground plate made of a conductor with a flat plate shape; an opposing conductive plate made of another conductor with a flat plate shape, arranged to space apart from the ground plate by a predetermined distance, and having a power supply point electrically connected to a power supply line; a short-circuit portion electrically connecting the opposing conductive plate and the ground plate; and a radio wave shield body for shielding a propagation of an electric field, which is arranged on an upper side of the opposing conductive plate and is made of a conductor or a dielectric material. Parallel resonance at a predetermined target frequency is generated by an inductance provided in the short-circuit portion and a capacitance between the ground plate and the opposing conductive plate.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Inventors: Masakazu IKEDA, Yuuji KAKUYA, Kenichiro SANJI, Nobuyasu OKABE, Hiroyuki IZUMI
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Publication number: 20220006195Abstract: An antenna device includes: a ground plate; an opposing conductive plate provided with a power supply point installed at a predetermined distance from the ground plate; and a short-circuit portion provided in a central region of the opposing conductive plate and electrically connecting the opposing conductive plate and the ground plate. A parallel resonance at a predetermined target frequency is generated by an inductance provided in the short-circuit portion and a capacitance between the ground plate and the opposing conductive plate; and the ground plate is arranged asymmetrically with respect to the opposing conductive plate.Type: ApplicationFiled: September 20, 2021Publication date: January 6, 2022Inventors: Masakazu IKEDA, Yuuji KAKUYA, Kenichiro SANJI, Nobuyasu OKABE