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公开(公告)号：US20220013913A1
公开(公告)日：2022-01-13
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
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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公开(公告)号：US20200328516A1
公开(公告)日：2020-10-15
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：US20190229411A1
公开(公告)日：2019-07-25
申请号：US16373675
申请日：2019-04-03
Applicant: DENSO CORPORATION
Inventor： Yuji SUGIMOTO , Shiro KOIDE , Hiroyuki IZUMI
Abstract: An antenna device includes a ground plate that is a plate-shaped conductor member, a patch portion that is a plate-shaped conductor member placed to be opposed to the ground plate with a predetermined distance therebetween, a short-circuit portion that is a conductor member electrically connecting together the patch portion and the ground plate, and an additional conductor that is a plate-shaped conductor member placed to be opposed to the patch portion with a predetermined distance therebetween. The additional conductor is placed on a side of the patch portion on which the ground plate is not placed. An inductance of the short-circuit portion, a capacitance formed by the ground plate and the patch portion, and a capacitance formed by the patch portion and the additional conductor are used to perform parallel resonance.
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公开(公告)号：US20230066781A1
公开(公告)日：2023-03-02
申请号：US17982254
申请日：2022-11-07
Applicant: DENSO CORPORATION
Inventor： Youhei SEKIYA , Yuzi SUGIMOTO , Masakazu IKEDA , Yuuji KAKUYA , Ryuichi ARAI , Shirou KOIDE , Takuya YAMASHITA , Hiroyuki IZUMI
Abstract: 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.
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