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公开(公告)号：US11353546B2
公开(公告)日：2022-06-07
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：US11336024B2
公开(公告)日：2022-05-17
申请号：US17038625
申请日：2020-09-30
Applicant: DENSO CORPORATION
Inventor： Kazumasa Sakurai , Toshiya Sakai
Abstract: A reflection reducing apparatus includes a dielectric base plane (30), a first patch group, a second patch group, and a ground plate (40). A plurality of first conductive patches (10) each resonate in a first direction (α) and a second direction (β) which are different in resonant length from each other. A plurality of second conductive patches include a first direction-oriented patch (20a) and a second direction-oriented patch (20b) which are different in resonant length from each other. The second conductive patches are arranged along an outer periphery of the first patch group at an interval away from the first patch group.
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公开(公告)号：US11079472B2
公开(公告)日：2021-08-03
申请号：US16931337
申请日：2020-07-16
Applicant: DENSO CORPORATION
Inventor： Kazushi Kawaguchi , Kazumasa Sakurai , Toshiya Sakai , Asahi Kondo
IPC: G01S7/03 , G01S13/931 , H01Q9/04 , H01Q15/14 , H01Q21/06
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：US12266863B2
公开(公告)日：2025-04-01
申请号：US17663466
申请日：2022-05-16
Applicant: DENSO CORPORATION
Inventor： Kazumasa Sakurai , Kazushi Kawaguchi , Junzoh Tsuchiya
Abstract: A dielectric substrate includes a plurality of pattern layers. A ground plate to be used as a ground plane is formed in a first pattern layer of the dielectric substrate. A functional unit includes a plurality of conductive patches that are parasitic patterns formed in a second pattern layer different from the first pattern layer. The conductive patches are periodically arranged, and sides of the conductive patches along at least one direction are set at a length to cause resonance of a radio wave that propagates through a surface of the dielectric substrate.
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公开(公告)号：US11824259B2
公开(公告)日：2023-11-21
申请号：US16794702
申请日：2020-02-19
Applicant: DENSO CORPORATION
Inventor： Toshiya Sakai , Kazumasa Sakurai , Asahi Kondo
CPC classification number: H01Q1/38 , H01Q1/48 , H01Q1/521 , H01Q13/106
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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Patent Agency Ranking
公开(公告)号：US11445600B2
公开(公告)日：2022-09-13
申请号：US16855375
申请日：2020-04-22
Applicant: SOKEN, INC. , DENSO CORPORATION
Inventor： Kazumasa Sakurai , Kazuya Wakita , Yuuji Kakuya
Abstract: 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.
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公开(公告)号：US11143741B2
公开(公告)日：2021-10-12
申请号：US16654395
申请日：2019-10-16
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Toshiya Sakai , Kazumasa Sakurai , Asahi Kondo
Abstract: A radar system detects an object using radar waves and includes an antenna surface and a cover part. The antenna surface is provided with at least one array antenna arranged on a collinear arrangement straight line. The cover part covers the front of an antenna of the array antenna, where the front of the antenna is the side away from which radar waves are radiated with respect to the antenna surface as a boundary. The at least one array antenna is provided with at least one unit antenna where a plurality of antenna elements that radiate radar waves of the same phase are arranged in the same direction as the arrangement straight line. The unit antenna is arranged in a direction perpendicular to the arrangement straight line along the antenna surface. The cover part is configured such that the incidence angle of the radar waves is equal to or less than a Brewster angle.
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公开(公告)号：US11101552B2
公开(公告)日：2021-08-24
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：US10819026B2
公开(公告)日：2020-10-27
申请号：US15539078
申请日：2015-12-24
Applicant: DENSO CORPORATION
Inventor： Kazumasa Sakurai , Yuji Sugimoto , Kazushi Kawaguchi , Asahi Kondo
Abstract: A radar apparatus is provided with transmitting means, receiving means, target detection means, azimuth detection means and a cover member. The cover member has a first face and a second face. The first face and second face are not parallel to one another. At least one of the first face and second face is a curved surface which is curved along azimuth detection directions of the azimuth detection means, such as to provide a large phase difference between incoming waves that are received by a plurality of antenna elements and are from within a range of large angular values in the azimuth detection directions of the azimuth detection means.
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公开(公告)号：US20180267138A1
公开(公告)日：2018-09-20
申请号：US15754839
申请日：2016-07-28
Applicant: DENSO CORPORATION
Inventor： Kazumasa Sakurai , Kazushi Kawaguchi , Yuji Sugimoto , Asahi Kondo
CPC classification number: G01S7/032 , G01S7/03 , G01S13/931 , G01S2007/027 , G01S2013/9375 , G01S2013/9389 , H01Q1/3233 , H01Q1/42 , H01Q15/02 , H01Q15/08
Abstract: A radar device is equipped with a radar emitting section, a radar input section, a detector, and a cover. The radar emitting section radiates an electromagnetic wave. The radar input section receives a return of the electromagnetic wave from an object. The detector works to detect the object using the return of the electromagnetic wave inputted to the radar input section. The cover covers an object portion that is at least one of the radar emitting section and the radar input section. The cover is designed to have a convex lens formed on a portion of the cover through which the electromagnetic wave passes to the object portion. The cover is made in the form of a radome. The structure of such a radome serves to decrease the power consumption of the radar device.
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