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

IPC: H01Q1/32 ,  H01Q15/14 ,  H01Q21/06 ,  G01S13/93 ,  G01S7/03

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.

公开(公告)号：US20230099058A1

公开(公告)日：2023-03-30

申请号：US18058075

申请日：2022-11-22

Applicant: DENSO CORPORATION

Inventor： Tomihiro IKEGAMI ,  Kazushi KAWAGUCHI

IPC: H01Q13/10

Abstract: A waveguide slot antenna includes a waveguide having a plurality of slots spaced apart by a predefined distance in a central-axis direction of the waveguide, as a radiating section. An uneven section provided on an outer wall surface around the radiating section has a periodic concave-convex pattern extending from the radiating section. The uneven section includes a plurality of protrusions spaced apart by a predefined distance in a dispersed manner in each of an axis direction parallel to the central-axis of the waveguide in which the plurality of slots are arranged and an axis direction orthogonal to the central-axis of the waveguide, and grooves between the protrusions. The plurality of protrusions and the grooves causes incident waves incident from forward in a direction of radiation of radio waves emitted from the radiating section to be reflected in a direction different from an incident direction of the incident waves.

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：US20180013196A1

公开(公告)日：2018-01-11

申请号：US15539611

申请日：2015-12-24

Applicant: DENSO CORPORATION

Inventor： Kazumasa SAKURAI ,  Yuji SUGIMOTO ,  Kazushi KAWAGUCHI ,  Asahi KONDO

IPC: H01Q1/42 ,  G01S7/02

CPC classification number: H01Q1/42 ,  G01S7/02 ,  G01S7/03 ,  G01S13/931 ,  G01S2007/027 ,  H01Q1/3233 ,  H01Q1/3283

Abstract: A radar apparatus includes transmitting means, receiving means, target detection means, and a cover member. The cover member is positioned opposite at least one of the transmitting means and the receiving means, such as to cover at least one of the transmitting means and the receiving means. The cover member is provided with a first face which is positioned opposite at least one of the transmitting means and the receiving means, and a second face which is on an opposite side from the first face and is not parallel to the first face.

公开(公告)号：US20220131278A1

公开(公告)日：2022-04-28

申请号：US17647426

申请日：2022-01-07

Applicant: DENSO CORPORATION

Inventor： Kazumasa SAKURAI ,  Kazushi KAWAGUCHI

IPC: H01Q21/06 ,  H01Q21/20

Abstract: A broadband planar array antenna in one aspect of the present disclosure includes: a multi-layer board; a plurality of patch antenna patterns; and a transmission line that connects the plurality of patch antenna patterns in series. The distance from the transmission line to an end of each of the plurality of patch antenna patterns along the polarization direction of a radiated radio wave is shorter with increasing proximity to a feeding point of the transmission line.

公开(公告)号：US20200295451A1

公开(公告)日：2020-09-17

申请号：US16888275

申请日：2020-05-29

Applicant: DENSO CORPORATION

Inventor： Kazumasa SAKURAI ,  Yuji SUGIMOTO ,  Kazushi KAWAGUCHI ,  Asahi KONDO

IPC: H01Q1/42 ,  G01S7/02 ,  G01S7/03 ,  H01Q1/32 ,  G01S13/931

Abstract: A radar apparatus includes transmitting means, receiving means, target detection means, and a cover member. The cover member is positioned opposite at least one of the transmitting means and the receiving means, such as to cover at least one of the transmitting means and the receiving means. The cover member is provided with a first face which is positioned opposite at least one of the transmitting means and the receiving means, and a second face which is on an opposite side from the first face and is not parallel to the first face.

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

IPC: H01Q15/08 ,  H01Q1/42 ,  G01S7/03 ,  G01S13/93

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.

公开(公告)号：US20170352950A1

公开(公告)日：2017-12-07

申请号：US15539078

申请日：2015-12-24

Applicant: DENSO CORPORATION

Inventor： Kazumasa SAKURAI ,  Yuji SUGIMOTO ,  Kazushi KAWAGUCHI ,  Asahi KONDO

IPC: H01Q1/42 ,  G01S13/42 ,  G01S7/02

CPC classification number: H01Q1/42 ,  G01S7/02 ,  G01S7/03 ,  G01S13/42 ,  G01S13/931 ,  G01S2007/027 ,  H01Q1/3233

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.

公开(公告)号：US20170244174A1

公开(公告)日：2017-08-24

申请号：US15501969

申请日：2015-07-14

Applicant: DENSO CORPORATION

Inventor： Kazushi KAWAGUCHI ,  Asahi KONDO

IPC: H01Q21/06 ,  H01Q15/14

CPC classification number: H01Q21/065 ,  H01Q9/0407 ,  H01Q15/006 ,  H01Q15/14 ,  H01Q21/068

Abstract: A surface current suppression filter (1) is a bandstop filter that suppresses propagation of a surface current in a predetermined propagation direction on a dielectric substrate (2). The filter (1) is configured such that a plurality of electromagnetic band gap (EBG) rows (10, 20) are arrayed in an array direction. Each EBG row (10, 20) has at least one EBG (11, 21) that is arrayed in a perpendicular direction orthogonal to the array direction. Cutoff characteristics of a first EBG (11) in the first EBG row (10) differs from cutoff characteristics of a second EBG (12) in the second EBG row (20).

公开(公告)号：US20220278464A1

公开(公告)日：2022-09-01

申请号：US17663466

申请日：2022-05-16

Applicant: DENSO CORPORATION

Inventor： Kazumasa SAKURAI ,  Kazushi KAWAGUCHI ,  Junzoh TSUCHIYA

IPC: H01Q21/06 ,  H01Q1/48

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.