公开(公告)号：US20220026522A1

公开(公告)日：2022-01-27

申请号：US17495261

申请日：2021-10-06

Applicant: DENSO CORPORATION

Inventor： Kazumasa SAKURAI ,  Toshiya SAKAI

IPC: G01S7/02 ,  G01S13/931 ,  G01S7/03 ,  H01Q15/18

Abstract: A radar device configured to emit radio waves and detects an object present in a prescribed detection region includes an antenna unit and a radio wave reflector. The antenna unit is configured to emit the radio waves. The radio wave reflector is disposed in a region around the antenna unit and outside the detection region and includes a reflection surface having a height gradually changed with respect to an installation surface of the radar device.

公开(公告)号：US20210028551A1

公开(公告)日：2021-01-28

申请号：US17038625

申请日：2020-09-30

Applicant: DENSO CORPORATION

Inventor： Kazumasa SAKURAI ,  Toshiya SAKAI

IPC: H01Q15/24 ,  H01Q1/48 ,  H01Q21/06 ,  H01Q1/52 ,  H01Q21/24

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 (a) 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.

公开(公告)号：US20200348392A1

公开(公告)日：2020-11-05

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.

公开(公告)号：US20200049794A1

公开(公告)日：2020-02-13

申请号：US16654395

申请日：2019-10-16

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Toshiya SAKAI ,  Kazumasa SAKURAI ,  Asahi KONDO

IPC: G01S7/03 ,  G01S13/04 ,  H01Q1/42 ,  H01Q3/36

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.