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公开(公告)号：US20190067827A1
公开(公告)日：2019-02-28
申请号：US16078890
申请日：2017-02-23
Applicant: DENSO CORPORATION
Inventor： Toshiya SAKAI , Kazumasa SAKURAI , Kazushi KAWAGUCHI , Yuji SUGIMOTO , Asahi KONDO
Abstract: An element section includes at least one antenna element transmitting/receiving radio waves. Refracting sections refract unnecessary waves, which are radio waves emitted from the element section and traveling away from a detection area, in a rearward direction in which the unnecessary waves travel further than an antenna-formed surface having the at least one antenna element of the element section.
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公开(公告)号：US20200185822A1
公开(公告)日：2020-06-11
申请号：US16794702
申请日：2020-02-19
Applicant: DENSO CORPORATION
Inventor： Toshiya SAKAI , Kazumasa SAKURAI , Asahi KONDO
Abstract: An antenna device includes a dielectric substrate having a first surface on which an antenna part is formed and a second surface on which a base plate is formed. The antenna part has one or more antenna patterns configured to act as radiating elements. The antenna patterns resonate in one or more resonance directions to incident waves having an operating frequency of the antenna part, thereby generating emitted waves having polarized waves different from those of transmitted/received waves which are transmitted/received by the antenna part. For each of the resonance directions, the antenna patterns include at least one line pattern having a width which is narrower than the total width of the antenna patterns in a direction perpendicular to the resonance direction.
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公开(公告)号：US20200052396A1
公开(公告)日：2020-02-13
申请号：US16659914
申请日：2019-10-22
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Toshiya SAKAI , Kazumasa SAKURAI , Asahi KONDO
Abstract: An antenna device includes a dielectric substrate, a ground plane, an antenna unit, and an additional functional unit. The dielectric substrate includes a plurality of pattern formation layers. The ground plane is formed on a first pattern formation layer included in the plurality of pattern formation layers, and acts as an antenna grounding surface. The antenna unit is formed on a pattern formation layer that is included in the plurality of pattern formation layers and that is different from the first pattern formation layer. The antenna unit includes one or more antenna patterns configured to act as radiation elements. The additional functional unit includes one or more parasitic patterns provided on a propagation path for a surface propagating over the dielectric substrate, and causes the surface wave to generate a radiation wave with polarization different from polarization of a radio wave transmitted and received by the antenna unit.
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公开(公告)号：US20220123460A1
公开(公告)日：2022-04-21
申请号：US17646032
申请日：2021-12-27
Applicant: DENSO CORPORATION
Inventor： Kazumasa SAKURAI , Toshiya SAKAI
IPC: H01Q1/42 , G01S7/02 , G01S7/03 , H01Q1/52 , G01S13/931
Abstract: A radar device comprises an antenna portion, a radome, and a housing. The antenna portion includes an antenna surface provided with one or more antennas, the antenna emitting a radio wave. The radome is made of a material allowing passage of the radio wave emitted by the antenna portion, and is disposed to face the antenna surface. The housing forms, together with the radome, a space for accommodating the antenna portion. The housing includes a peripheral edge which surrounds the antenna surface and is in contact with the radome, at least part of the peripheral edge includes a barrier part which protrudes outward from the radome along the antenna surface.
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公开(公告)号：US20200185824A1
公开(公告)日：2020-06-11
申请号：US16794695
申请日：2020-02-19
Applicant: DENSO CORPORATION
Inventor： Toshiya SAKAI , Kazumasa SAKURAI , Asahi KONDO
Abstract: A dielectric substrate has a first surface formed with a base plate and a second surface formed with an antenna part. The antenna part has one or more antenna patterns. An additional function part has a plurality of conductor patterns arranged around the antenna part. The plurality of conductor patterns resonate in one or more resonance directions to incident waves having an operating frequency of the antenna part, thereby generating emitted waves having polarized waves different from those of electromagnetic waves transmitted/received by the antenna part. For each of the resonance directions, at least one of the conductor patterns includes at least one line pattern having a width which is narrower than the total width of the conductor patterns in the direction perpendicular to the resonance direction.
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Patent Agency Ranking
公开(公告)号：US20190051977A1
公开(公告)日：2019-02-14
申请号：US16078590
申请日：2017-02-23
Applicant: DENSO CORPORATION
Inventor： Kazushi KAWAGUCHI , kazumasa SAKURAI , Toshiya SAKAI , Asahi KONDO
Abstract: An antenna device includes a dielectric substrate, a ground plane, an antenna unit, a reflection unit, and an interruption unit. The interruption unit includes a plurality of second conductor patches disposed around the antenna unit, and a plurality of through-holes permitting electrical conduction between each of the second conductor patches and the ground plane, and interrupts a surface current flowing on a surface of the dielectric substrate.
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公开(公告)号：US20190302226A1
公开(公告)日：2019-10-03
申请号：US16303935
申请日：2017-05-17
Applicant: DENSO CORPORATION
Inventor： Toshiya SAKAI , Kazumasa SAKURAI , Kazushi KAWAGUCHI , Takuya KOYA
Abstract: A radar apparatus includes an antenna unit and a cover unit. The cover unit is arranged at a position through which an electromagnetic wave sent and received by the antenna unit passes. The cover unit has, in an order from closer to the antenna unit, a first dielectric layer formed of a dielectric and a second dielectric layer formed of a dielectric having a dielectric constant different from that of the first dielectric layer. The first dielectric layer is configured to have a thickness not more than that for a maximum external transmittance. The external transmittance indicates a transmittance of an electromagnetic wave, which is emitted in a direction of an incidence angle with respect to the first dielectric layer, which is equal to a maximum sensing angle, when the electromagnetic wave is transmitted through the cover unit.
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公开(公告)号：US20190302225A1
公开(公告)日：2019-10-03
申请号：US16091252
申请日：2017-04-06
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Kazushi KAWAGUCHI , Kazumasa SAKURAI , Toshiya SAKAI , Asahi KONDO
Abstract: An antenna apparatus includes a dielectric substrate, a base plate, an antenna unit, and a reflecting unit. A plurality of conductor patches are structured to resonate, at an operating frequency of the antenna unit, in a resonating direction which is different from a polarization direction Dan of a radio wave transmitted and received by the antenna unit.
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公开(公告)号：US20190271762A1
公开(公告)日：2019-09-05
申请号：US16320232
申请日：2017-07-24
Applicant: DENSO CORPORATION
Inventor： Toshiya SAKAI , Kazumasa SAKURAI , Asahi KONDO , Kazushi KAWAGUCHI
Abstract: A radar apparatus that detects an object using radiated waves includes: an antenna surface that includes an element unit that emits a radiated wave for a radar; and a cover member that covers the antenna surface to protect the element unit. The cover member includes an inner refractive surface that is an inner side surface of the cover member on which an undesired wave is incident and is formed into a shape that refracts the undesired wave incident on the inner refractive surface so as to advance towards antenna rear. The antenna rear is a side opposite an antenna front that is a side on which the radiated wave is emitted, with the antenna surface as a boundary. Undesired waves are radiated waves that are emitted outside a range of a predetermined solid angle relative to a normal direction of the antenna surface from a center of the antenna surface from which the radiated waves are emitted.
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公开(公告)号：US20180366818A1
公开(公告)日：2018-12-20
申请号：US16061836
申请日：2016-12-15
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Kazushi KAWAGUCHI , Kazumasa SAKURAI , Toshiya SAKAI , Asahi KONDO
Abstract: An antenna device includes a dielectric substrate, a ground plate arranged on a first surface of the dielectric substrate, an antenna part arranged on a second surface of the dielectric substrate, and a reflecting part. The reflecting part is arranged around the antenna part and has a plurality of conductor patches each functioning as a reflecting plate. The plurality of conductor patches form a plurality of blocks aligned along a predetermined block arrangement direction. The plurality of blocks are configured such that phases of reflected waves at an operating frequency are different for each of the blocks and phase differences of reflected waves between adjacent blocks are non-uniformly different for each of the adjacent blocks.
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