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公开(公告)号：US10411337B2
公开(公告)日：2019-09-10
申请号：US15526016
申请日：2015-12-04
Applicant: DENSO CORPORATION
Inventor： Masakazu Ikeda , Hiroaki Kuraoka
Abstract: An antenna device includes a base plate, an opposing conductor plate, a short-circuiting portion, a power-feed point, and at least one second-frequency electric-field impeding element provided to the opposing conductor plate, the base plate, or between the opposing conductor plate and the base plate. The second-frequency electric-field impeding element impedes a propagation of an electric field being vertical to the base plate and heading from the short-circuiting portion toward an outer edge portion of the opposing conductor plate, is induced at a second frequency higher than the first frequency, does not impede a propagation of the electric field induced at the first frequency, and is disposed such that an electrical area of the opposing conductor plate for a signal at the second frequency is an area of a proper size to generate an electrostatic capacitance that undergoes parallel resonance with the inductance of the short-circuiting portion at the second frequency.
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公开(公告)号：US12183973B2
公开(公告)日：2024-12-31
申请号：US17972133
申请日：2022-10-24
Applicant: DENSO CORPORATION
Inventor： Yuuji Kakuya , Masakazu Ikeda , Kenichirou Sanji , Tomokazu Miyashita , Ryozou Fujii , Masashi Urabe , Hiromichi Naitoh
Abstract: 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.
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公开(公告)号：US10727589B2
公开(公告)日：2020-07-28
申请号：US15322184
申请日：2015-06-23
Applicant: DENSO CORPORATION
Inventor： Masakazu Ikeda , Hiroaki Kuraoka
IPC: H01Q5/328 , H01Q9/04 , H01Q5/35 , H01Q5/335 , H01Q5/378 , H01Q1/22 , H01Q1/32 , H01Q1/36 , H01Q1/48
Abstract: An antenna device includes a rectangular conductor pattern that is disposed substantially in parallel to a ground plate at a predetermined distance, a short-circuit portion that electrically connects the conductor pattern to the ground plate, a first feeding point for transmitting and receiving a signal of a first frequency, and a second feeding point for transmitting and receiving a signal of a second frequency. An electric length of one side of the conductor pattern is set to half a wavelength of the second frequency. The short-circuit portion is disposed in the center portion of the conductor pattern, and an area of the conductor pattern forms a capacitance that resonates in parallel with an inductance provided in the short-circuit portion at the first frequency.
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公开(公告)号：US10573181B2
公开(公告)日：2020-02-25
申请号：US15768417
申请日：2016-10-04
Applicant: DENSO CORPORATION
Inventor： Masakazu Ikeda , Kimiaki Tanaka , Hiroyuki Okuno , Tatsuya Hayashi
Abstract: A vehicular terminal includes: a subject-side critical area setting unit that sets an area, to which a subject terminal is movable from a current position within a predetermined time, as a subject-side critical area; an object-side critical area setting unit that sets an area, to which a pedestrian terminal is movable from a current position within the predetermined time, as an object-side critical area; a determination unit that determines whether the subject-side critical area overlaps with the object-side critical area, and determines a possibility of collision between a vehicle and a pedestrian; and a communication controller that notifies notification information via a notification unit when the possibility of collision is determined.
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公开(公告)号：US12009609B2
公开(公告)日：2024-06-11
申请号：US17484207
申请日：2021-09-24
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Masakazu Ikeda , Yuuji Kakuya , Kenichiro Sanji , Nobuyasu Okabe , Hiroyuki Izumi
CPC classification number: H01Q9/0421 , H01Q1/42 , H01Q1/48 , H01Q1/526
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US11271310B2
公开(公告)日：2022-03-08
申请号：US16840484
申请日：2020-04-06
Applicant: DENSO CORPORATION
Inventor： Yuuji Kakuya , Hidenori Akita , Masakazu Ikeda , Kenichirou Sanji , Hiroyuki Izumi
Abstract: 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.
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公开(公告)号：US11165157B2
公开(公告)日：2021-11-02
申请号：US16079948
申请日：2017-02-13
Applicant: DENSO CORPORATION , SOKEN, INC. , NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY
Inventor： Masakazu Ikeda , Yuji Sugimoto , Hiroaki Kuraoka , Shiro Koide , Tetsuya Ueda , Kohei Enomoto
Abstract: An antenna device includes a ground plate, a patch portion disposed parallel to the ground plate with a particular spacing, a plurality of short circuit portions that electrically connect the patch portion to the ground plate, and a loop portion which is a loop shaped conductor member at a particular spacing from an outer edge portion of the patch portion. The patch portion has an area which forms an electrostatic capacitance that causes parallel resonance with an inductance provided by the short circuit portions at a particular target frequency. The loop portion is formed with a perimeter length which is an integral multiple of the wavelength of radio waves at the target frequency. A feed point is disposed on the loop portion, and current is supplied to the patch portion through the loop portion.
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公开(公告)号：US10730483B2
公开(公告)日：2020-08-04
申请号：US15580721
申请日：2016-06-07
Applicant: DENSO CORPORATION
Inventor： Masakazu Ikeda , Hiroaki Kuraoka
Abstract: A transparent window plate is provided with a plurality of defogging heat wires arranged to have a side parallel with a first direction. The transparent window plate includes: a plurality of repetitive patterns that are arranged between one of the plurality of defogging heat wires and an adjacent one of the plurality of defogging heat wires so as to be not in contact with the plurality of defogging heat wires, and each of the plurality of repetitive patterns having at least one side parallel with the plurality of defogging heat wires. The plurality of repetitive patterns are aligned along the first direction; and the plurality of repetitive patterns are repetitively arranged along a second direction perpendicular to the first direction.
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公开(公告)号：US12261379B2
公开(公告)日：2025-03-25
申请号：US18070277
申请日：2022-11-28
Applicant: DENSO CORPORATION
Inventor： Yuuji Kakuya , Masakazu Ikeda , Kenichirou Sanji , Tomokazu Miyashita , Ryozou Fujii
Abstract: 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 ¼ of the target wavelength.
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公开(公告)号：US12142852B2
公开(公告)日：2024-11-12
申请号：US17479494
申请日：2021-09-20
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Masakazu Ikeda , Yuuji Kakuya , Kenichiro Sanji , Nobuyasu Okabe
Abstract: 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.
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