WO2022123845A1 - Radar device - Google Patents

Radar device Download PDF

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Publication number
WO2022123845A1
WO2022123845A1 PCT/JP2021/033467 JP2021033467W WO2022123845A1 WO 2022123845 A1 WO2022123845 A1 WO 2022123845A1 JP 2021033467 W JP2021033467 W JP 2021033467W WO 2022123845 A1 WO2022123845 A1 WO 2022123845A1
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WO
WIPO (PCT)
Prior art keywords
radar device
metal portion
transmitting antenna
metal
electromagnetic wave
Prior art date
Application number
PCT/JP2021/033467
Other languages
French (fr)
Japanese (ja)
Inventor
純平 堀本
隆史 松村
千裕 右田
Original Assignee
日立Astemo株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 日立Astemo株式会社 filed Critical 日立Astemo株式会社
Priority to DE112021005328.0T priority Critical patent/DE112021005328T5/en
Priority to JP2022568055A priority patent/JPWO2022123845A1/ja
Publication of WO2022123845A1 publication Critical patent/WO2022123845A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems

Definitions

  • the present invention relates to a radar device.
  • a radar device is a device that radiates high-frequency electromagnetic waves such as millimeter waves to the surroundings, receives electromagnetic waves reflected from a target, and processes the signal to obtain position and speed information with the target. .. By using this information, it is possible to construct a system that calculates the risk of collision between the target target and the own vehicle and issues an alarm.
  • the camera device which is one of the sensing devices, requires ambient light or auxiliary light, but since the radar device uses electromagnetic waves, it is possible to detect the target only with the radar device. Due to this feature, the radar device is particularly suitable for mounting on the corner portion of the vehicle or the side surface of the vehicle. Further, from this application, it is required for the radar device to have a wide range of detection of the target.
  • FIG. 8 is a diagram showing an example in which a radar device is attached to a vehicle.
  • the upper side shows the front of the vehicle and the lower side shows the rear of the vehicle.
  • the radar device 1 is mounted on the side surface F of the vehicle 7.
  • a part of the detection range E overlaps with the side surface F of the vehicle 7, and this side surface. It may receive the reflected wave R from F.
  • the target information by the reflected wave R from the vehicle 7 is unnecessary information in the warning system, and if the intensity of the reflected wave R is high, it may not be separated from the original target information in the signal processing. , There is a concern that the warning function for a target that has a risk of collision with the vehicle 7 does not operate normally.
  • Patent Document 1 As a means for solving this problem, for example, the techniques described in Patent Document 1 and Patent Document 2 have been proposed.
  • Patent Document 1 discloses a technique in which a wall is formed from the inner surface of the radome surface toward the substrate circuit so that the radar wave from the transmitting antenna portion has directivity.
  • Patent Document 2 discloses a technique in which a radio wave absorbing member is attached on the surface of an antenna substrate.
  • Patent Documents 1 and 2 by applying the above technique, unnecessary reflected waves from the own vehicle are suppressed.
  • Patent Document 1 since it is necessary to form a wall on the inner surface of the radome, it is necessary to change the radome molding die, and there is a problem that a large amount of cost is incurred.
  • An object of the present invention is to provide a radar device capable of solving the above-mentioned problems, suppressing an increase in cost, and attenuating the radio wave intensity to a specific angle.
  • the present invention is a radar device including a circuit board provided with a transmitting antenna portion for transmitting electromagnetic waves and a radome portion covering the circuit board. It is characterized in that a metal portion not connected to a circuit is provided in the space surrounded by the radome portion. Further, the metal portion is characterized in that it is arranged on the circuit board.
  • the present invention it is possible to provide a radar device capable of suppressing an increase in cost and attenuating the radio wave intensity to a specific angle.
  • FIG. 1 It is a cross-sectional schematic diagram of the radar apparatus which concerns on Example 1 of this invention. It is a top view of the transmitting antenna part and the metal part in FIG. 1. It is a figure which shows an example of the calculation result in the radiant power characteristic of the electromagnetic wave which concerns on Example 1 of this invention. It is a top view of the transmitting antenna part and the metal part which concerns on Example 2 of this invention. It is a figure which shows an example of the calculation result in the radiant power characteristic of the electromagnetic wave which concerns on Example 2 of this invention. It is a top view of the transmitting antenna part and the metal part which concerns on Example 3 of this invention. It is a figure which shows an example of the calculation result in the radiant power characteristic of the electromagnetic wave which concerns on Example 3 of this invention. It is a figure which shows an example which attached the radar device to a vehicle. It is an enlarged view of the radar apparatus part in FIG.
  • FIG. 1 is a schematic cross-sectional view of the radar device according to the first embodiment of the present invention
  • FIG. 2 is a top view of a transmitting antenna portion and a metal portion in FIG.
  • FIG. 1 is a cross-sectional view taken along the line II of FIG.
  • FIG. 9 is an enlarged view of the radar device portion in FIG.
  • the radar device 1 of the present invention is mounted on a vehicle, for example, and used as an in-vehicle radar.
  • the radar device 1 is attached to the side surface of the vehicle 7 so that the surface of the circuit board 3 on which the transmission antenna unit 4 is mounted is inclined so as to face the rear outer side of the vehicle 7, and the radar wave is transmitted.
  • the direction is 0 deg
  • the vehicle 7 side from the radar wave transmission direction is ⁇ deg
  • the outside of the vehicle 7 is + deg.
  • this radar device 1 is used as an in-vehicle radar, it is used to detect other vehicles existing in an area that becomes a blind spot that cannot be visually confirmed, left and right door mirrors, and rearview mirrors.
  • the radar device 1 is a circuit board having a radome portion 2 having a U-shaped cross section, a comb-shaped transmitting antenna portion 4, a metal portion 5, a transmitting antenna portion 4, and a metal portion 5. It is composed of 3.
  • the transmitting antenna portion 4 and the metal portion 5 are formed by printing a metal member on, for example, a circuit board 3.
  • the radome portion 2 is arranged so as to cover the circuit board 3 and has a function of protecting the circuit board 3 from the surrounding environment.
  • the radome portion 2 is made of any one of polycarbonate, syndiotactic polystyrene, polypropylene, ABS resin and the like.
  • the transmitting antenna portion 4 and the metal portion 5 are configured to have the same thickness (height) on the circuit board 3.
  • the transmitting antenna portion 4 and the metal portion 5 have the same thickness (height) so that the transmitting antenna portion 4 and the metal portion 5 are formed by printing on the circuit board 3, for example, the transmitting antenna
  • the part 4 and the metal part 5 can be printed and formed at the same time, the manufacturing process can be shortened, and the manufacturing cost can be reduced.
  • the transmitting antenna unit 4 has a function of radiating a high-frequency electromagnetic wave W typified by millimeter waves to the surroundings.
  • the transmitting antenna unit 4 is made of, for example, a steel plate, a zinc-plated steel plate, zinc spray, a copper plate, a copper foil, an aluminum plate, an aluminum foil, or the like.
  • the transmitting antenna portion 4 is formed with protrusions 4a and 4b protruding from the surface of the transmitting antenna portion 4, and the protrusion 4a side faces the metal portion 5. A plurality of protrusions 4a and 4b are formed on each surface.
  • the metal portion 5 has an independent structure that is not connected to other circuits such as GND wiring in the circuit board 3, and is formed adjacent to the transmitting antenna portion 4 at the same time.
  • the metal portion 5 has a function of rereflecting an electromagnetic wave component partially reflected by the surface 21 of the radome portion 2 in the electromagnetic wave W radiated from the transmitting antenna portion 4.
  • the metal portion 5 is made of the same material as the transmitting antenna portion 4, for example, a steel plate, a zinc-plated steel plate, a zinc spray, a copper plate, a copper foil, an aluminum plate, an aluminum foil, or the like. In the first embodiment, the manufacturing cost can be reduced by using the same material for the transmitting antenna portion 4 and the metal portion 5. Further, the metal portion 5 is arranged on the vehicle 7 side with respect to the transmitting antenna portion 4.
  • the electromagnetic wave component A and the radome that have passed through the radome portion 2 of the electromagnetic waves W radiated from the transmitting antenna portion 4 The electromagnetic wave component B, which is reflected by the surface 21 of the portion 2 and then re-reflected by the metal portion 5 and passed through the redome portion 2, has an opposite phase relationship, and the electromagnetic wave component A and the electromagnetic wave component B interfere with each other. It is possible to cancel each other out and attenuate the radiated power of electromagnetic waves in this direction.
  • the electromagnetic wave component B is reflected by the surface 21 of the radome portion 2 and the metal portion 5, when passing through the radome portion 2, the phase is delayed with respect to the electromagnetic wave component A and the phase is opposite to that of the electromagnetic wave component A. Since the metal portion 5 is arranged on the vehicle 7 side with respect to the transmitting antenna portion 4, the radiated power of the electromagnetic wave transmitted to the vehicle 7 side is attenuated, and the reflected wave from the side surface of the vehicle 7 can be suppressed. ..
  • the additional metal portion 5 can be formed at the same time as the transmitting antenna portion 4, and the additional cost generated by this method is extremely small.
  • the transmitting antenna portion 4 and the metal portion 5 are formed linearly when viewed from the upper surface and are arranged in parallel. Then, the distance between the surface C of the transmitting antenna portion 4 and the surface D of the metal portion 5 is made equal to the thickness of the metal portion 5.
  • FIG. 3 is a diagram showing an example of a calculation result in the radiant power characteristic of the electromagnetic wave according to the first embodiment of the present invention.
  • the solid line shows the case where the metal portion 5 does not exist
  • the broken line shows the case where the metal portion 5 exists.
  • the radiant power in a predetermined region can be reduced by installing the metal portion 5.
  • the first embodiment it is possible to make the reflected wave of the electromagnetic wave from the vehicle body relatively small by setting the direction in which the radiant power is attenuated to the vehicle body direction.
  • the signal processing of the radar device it becomes possible to separate it from the original target information, and it becomes possible to operate the alarm function normally.
  • the additional metal portion can be formed at the same time as the transmitting antenna portion, and the occurrence of additional cost can be suppressed.
  • Example 2 of the present invention will be described.
  • the same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
  • FIG. 4 is a top view of the transmitting antenna portion and the metal portion according to the second embodiment of the present invention
  • FIG. 5 is a diagram showing an example of a calculation result in the radiant power characteristic of the electromagnetic wave according to the second embodiment of the present invention.
  • the transmitting antenna portion 4 is formed with protrusions 4a and 4b (antenna portion protrusions) protruding from the surface of the transmitting antenna portion 4, and the protrusion 4a side faces the metal portion 5.
  • a plurality of protrusions 4a and 4b are formed on each surface.
  • the transmitting antenna portion 4 is formed in a comb-teeth shape by a plurality of protrusions 4a and 4b.
  • a metal portion 51 is arranged at at least one place between the adjacent protrusions 4a of the plurality of protrusions 4a.
  • a plurality of metal portions 51 are provided, and each of them is arranged between adjacent protrusions 4a.
  • the installation space of the metal portion 5 can be reduced, and the circuit board 3 can be miniaturized.
  • the circuit board 3 can be miniaturized, so that the manufacturing cost can be reduced and the target and range in which the radar device can be mounted can be expanded.
  • the radiant power characteristics of electromagnetic waves in the configuration of FIG. 4 are as shown in FIG. In FIG. 5, the solid line shows the case where the metal portion 5 does not exist, and the broken line shows the case where the metal portion 51 exists.
  • the radiant power of the predetermined region on the side where the metal portion 51 is arranged can be reduced. can do. Further, according to the second embodiment, it is possible to increase the radiant power in a predetermined region on the side opposite to the side where the metal portion 51 is arranged.
  • Example 3 of the present invention will be described.
  • the same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
  • Example 3 is that a plurality of protrusions are provided on the metal portion.
  • FIG. 6 is a top view of the transmitting antenna portion and the metal portion according to the third embodiment of the present invention
  • FIG. 7 is a diagram showing an example of a calculation result in the radiant power characteristic of the electromagnetic wave according to the third embodiment of the present invention.
  • the transmitting antenna portion 4 is formed with protrusions 4a and 4b protruding from the surface of the transmitting antenna portion 4, and the protrusion 4a side faces the metal portion 52.
  • the transmitting antenna portion 4 is formed in a comb-teeth shape.
  • a plurality of protrusions 52a are formed on the side of the metal portion 52 facing the transmitting antenna portion 4.
  • the transmission antenna portion 4 side of the metal portion 52 is formed in a comb-teeth shape.
  • the plurality of protrusions 52a are arranged between the protrusions 4a adjacent to each other. That is, the transmitting antenna portion 4 and the metal portion 52 are arranged so that their comb teeth mesh with each other.
  • the installation space of the metal portion 5 can be reduced, and the circuit board 3 can be miniaturized.
  • the circuit board 3 can be miniaturized, so that the manufacturing cost can be reduced and the target and range in which the radar device can be mounted can be expanded.
  • the solid line indicates the case where the metal portion 5 is not present
  • the broken line indicates the case where the metal portion 51 is present (FIG. 4)
  • the alternate long and short dash line indicates the case where the metal portion 52 is present (FIG. 6).
  • the radiant power becomes small in the angle region smaller than -15 degrees. Further, in the angle region smaller than ⁇ 40 degrees, the radiated power is smaller than that of the configuration of FIG. 4 (Example 2). Further, in the angle region larger than 30 degrees, the effect of increasing the radiant power as compared with the configuration of FIG. 4 (Example 2) can be obtained.
  • the metal portion 52 is formed by installing the plurality of protrusions 52a formed in the shape of a comb of the metal portion 52 between the plurality of protrusions 4a formed in the shape of a comb of the transmitting antenna portion 4.
  • the radiant power in a predetermined area on the arranged side can be reduced. Further, according to the third embodiment, it is possible to increase the radiant power in a predetermined region on the side opposite to the side where the metal portion 52 is arranged.
  • the metal portion is not limited to this arrangement.
  • it may be placed on a rib extending from the side surface of the radome portion.
  • a mounting portion may be provided on the circuit board 3 and a metal portion may be mounted on the mounting portion.
  • the metal part may be arranged in the space surrounded by the radome part.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The purpose of the present invention is to provide a radar device that has a wide searching range and reduces a reflected wave from the side of a vehicle generated due to an arrangement direction of a radar.　A radar device according to the present invention is provided with a circuit board 3 having a transmission antenna unit 4 for transmitting an electromagnetic wave and a radome unit 2 covering the circuit board 3. In a space covered by the radome unit 2, a metal unit 5 not connected with a circuit is provided and reflects the electromagnetic wave transmitted from the transmission antenna unit 4. Of the electromagnetic wave W transmitted from the transmission antenna unit 4 to the outside, an electromagnetic wave component A, which has passed through the radome unit 2, and an electromagnetic wave component B, which has been reflected from the surface of the radome unit 2 and the metal unit and has passed through the radome unit 2, are mutually interfered and offset. This configuration attenuates a radiation power of the electromagnetic wave in a specific direction.

Description

レーダ装置Radar device
　本発明は、レーダ装置に関する。 The present invention relates to a radar device.
　近年、自動車の事故防止の為の運転者への支援や自動運転の実現化に対応するセンシング装置の一つとして、レーダ装置の開発が進んでいる。レーダ装置は、ミリ波に代表される高周波の電磁波を周囲に放射し、物標から反射される電磁波を受信し信号処理することで、その物標との位置及び速度情報が得られる装置である。これらの情報を利用することで、対象となる物標と自車との衝突リスクを計算し、警報を発するシステムの構築が可能となる。 In recent years, the development of radar devices has been progressing as one of the sensing devices that support drivers to prevent automobile accidents and realize automatic driving. A radar device is a device that radiates high-frequency electromagnetic waves such as millimeter waves to the surroundings, receives electromagnetic waves reflected from a target, and processes the signal to obtain position and speed information with the target. .. By using this information, it is possible to construct a system that calculates the risk of collision between the target target and the own vehicle and issues an alarm.
　ところで、センシング装置の一つであるカメラ装置は周囲光、又は補助光が必要となるが、レーダ装置では電磁波を利用していることから、レーダ装置のみで物標検知が可能である。この特徴から、レーダ装置は特に車両のコーナ部や車両側面への搭載が好適である。また、この用途からレーダ装置に対しては、物標の検知範囲を広範囲とすることが求められている。 By the way, the camera device, which is one of the sensing devices, requires ambient light or auxiliary light, but since the radar device uses electromagnetic waves, it is possible to detect the target only with the radar device. Due to this feature, the radar device is particularly suitable for mounting on the corner portion of the vehicle or the side surface of the vehicle. Further, from this application, it is required for the radar device to have a wide range of detection of the target.
　図８は、車両にレーダ装置を取り付けた一例を示す図である。図８では、上側が車両前方、下側が車両後方を示している。図８に示すように、レーダ装置１が車両７の側面Ｆへ搭載されている。レーダ装置１を警報システムとして機能を成立させる為に、レーダ装置１の検出感度が高い方向をある特定の方向とした場合、検出範囲Ｅの一部が車両７の側面Ｆと重畳し、この側面Ｆからの反射波Ｒを受けることがある。車両７からの反射波Ｒによる物標情報は警報システムでは不要な情報であり、また、この反射波Ｒの強度が高い場合、信号処理において、本来の物標情報と分離できないことがあることから、車両７に衝突リスクのある物標に対する警報の機能が正常に動作しないことが懸念される。 FIG. 8 is a diagram showing an example in which a radar device is attached to a vehicle. In FIG. 8, the upper side shows the front of the vehicle and the lower side shows the rear of the vehicle. As shown in FIG. 8, the radar device 1 is mounted on the side surface F of the vehicle 7. In order to establish the function of the radar device 1 as an alarm system, when the direction in which the detection sensitivity of the radar device 1 is high is set to a specific direction, a part of the detection range E overlaps with the side surface F of the vehicle 7, and this side surface. It may receive the reflected wave R from F. The target information by the reflected wave R from the vehicle 7 is unnecessary information in the warning system, and if the intensity of the reflected wave R is high, it may not be separated from the original target information in the signal processing. , There is a concern that the warning function for a target that has a risk of collision with the vehicle 7 does not operate normally.
　この解決手段として、例えば、特許文献１及び特許文献２に記載の技術が提案されている。 As a means for solving this problem, for example, the techniques described in Patent Document 1 and Patent Document 2 have been proposed.
　特許文献１では、レドーム面の内面から基板回路に向かって壁を形成し、送信アンテナ部からのレーダ波に指向性を持たせるようにした技術が開示されている。 Patent Document 1 discloses a technique in which a wall is formed from the inner surface of the radome surface toward the substrate circuit so that the radar wave from the transmitting antenna portion has directivity.
　また、特許文献２では、アンテナ基板面上に電波吸収部材を貼り付けた技術が開示されている。 Further, Patent Document 2 discloses a technique in which a radio wave absorbing member is attached on the surface of an antenna substrate.
　特許文献１及び２では上記の技術を適用することにより、自車両からの不要な反射波を抑制するようにしている。 In Patent Documents 1 and 2, by applying the above technique, unnecessary reflected waves from the own vehicle are suppressed.
特開２０１４－２０８４６号公報Japanese Unexamined Patent Publication No. 2014-20846 特開２０１９－４１２２４号公報Japanese Unexamined Patent Publication No. 2019-41224
　特許文献１に記載の技術においては、レドームの内面に壁を形成する必要があるため、レドーム成型金型の変更が必要となり、多額の費用が発生するといった課題があった。 In the technique described in Patent Document 1, since it is necessary to form a wall on the inner surface of the radome, it is necessary to change the radome molding die, and there is a problem that a large amount of cost is incurred.
　また、特許文献２に記載の技術においては、高価な電波吸収部材を基板上に貼り付けるための追加工程が必要であり、製品費用が増加するといった課題があった。 Further, in the technique described in Patent Document 2, there is a problem that an additional process for attaching an expensive radio wave absorbing member on a substrate is required, and the product cost increases.
　本発明の目的は、上記課題を解決し、費用の増加を抑制し、特定角度への電波強度を減衰させることができるレーダ装置を提供することにある。 An object of the present invention is to provide a radar device capable of solving the above-mentioned problems, suppressing an increase in cost, and attenuating the radio wave intensity to a specific angle.
　上記目的を達成するために本発明は、電磁波を送信する送信アンテナ部を備えた回路基板と、前記回路基板を覆うレドーム部を備えたレーダ装置であって、
　前記レドーム部で囲まれる空間内に、回路と接続されていないメタル部を備えたことを特徴とする。また、メタル部は、前記回路基板上に配置したことを特徴とする。 In order to achieve the above object, the present invention is a radar device including a circuit board provided with a transmitting antenna portion for transmitting electromagnetic waves and a radome portion covering the circuit board.
It is characterized in that a metal portion not connected to a circuit is provided in the space surrounded by the radome portion. Further, the metal portion is characterized in that it is arranged on the circuit board.
　本発明によれば、費用の増加を抑制し、特定角度への電波強度を減衰させることができるレーダ装置を提供することができる。 According to the present invention, it is possible to provide a radar device capable of suppressing an increase in cost and attenuating the radio wave intensity to a specific angle.
本発明の実施例１に係るレーダ装置の横断面模式図である。It is a cross-sectional schematic diagram of the radar apparatus which concerns on Example 1 of this invention. 図１における送信アンテナ部とメタル部の上面図である。It is a top view of the transmitting antenna part and the metal part in FIG. 1. 本発明の実施例１に係る電磁波の放射電力特性における計算結果の一例を示す図である。It is a figure which shows an example of the calculation result in the radiant power characteristic of the electromagnetic wave which concerns on Example 1 of this invention. 本発明の実施例２に係る送信アンテナ部とメタル部の上面図である。It is a top view of the transmitting antenna part and the metal part which concerns on Example 2 of this invention. 本発明の実施例２に係る電磁波の放射電力特性における計算結果の一例を示す図である。It is a figure which shows an example of the calculation result in the radiant power characteristic of the electromagnetic wave which concerns on Example 2 of this invention. 本発明の実施例３に係る送信アンテナ部とメタル部の上面図である。It is a top view of the transmitting antenna part and the metal part which concerns on Example 3 of this invention. 本発明の実施例３に係る電磁波の放射電力特性における計算結果の一例を示す図である。It is a figure which shows an example of the calculation result in the radiant power characteristic of the electromagnetic wave which concerns on Example 3 of this invention. 車両にレーダ装置を取り付けた一例を示す図である。It is a figure which shows an example which attached the radar device to a vehicle. 図８におけるレーダ装置部分の拡大図である。It is an enlarged view of the radar apparatus part in FIG.
　以下、実施例について図面を用いて説明する。なお、本実施例では、本発明に関わる電磁波の照射に関する箇所についてのみ説明を行い、レーダ装置として動作させる為に必要なモノリシック・マイクロ波集積回路、受信アンテナ、信号処理回路などについての説明は省略する。以下の実施例は本発明を説明するためのもので他の形態でも実施可能であり、この発明が限定されるものではない。 Hereinafter, examples will be described with reference to the drawings. In this embodiment, only the parts related to the irradiation of electromagnetic waves related to the present invention will be described, and the description of the monolithic microwave integrated circuit, receiving antenna, signal processing circuit, etc. necessary for operating as a radar device will be omitted. do. The following examples are for explaining the present invention and can be carried out in other embodiments, and the present invention is not limited thereto.
　図１は本発明の実施例１に係るレーダ装置の横断面模式図であり、図２は図１における送信アンテナ部とメタル部の上面図である。図１は図２のＩ－Ｉ線断面図となる。図９は図８におけるレーダ装置部分の拡大図である。 FIG. 1 is a schematic cross-sectional view of the radar device according to the first embodiment of the present invention, and FIG. 2 is a top view of a transmitting antenna portion and a metal portion in FIG. FIG. 1 is a cross-sectional view taken along the line II of FIG. FIG. 9 is an enlarged view of the radar device portion in FIG.
　本発明のレーダ装置１は、例えば車両に搭載し、車載レーダとして使用する。実施例１においては、レーダ装置１は車両７の側面に対し、送信アンテナ部４を搭載する回路基板３の面が車両７の後方外側を向くように傾斜して取付けられており、レーダ波送信方向を０ｄｅｇ、レーダ波送信方向から車両７側を－ｄｅｇ、車両７の外側を＋ｄｅｇとする。このレーダ装置１を車載レーダとして使用する場合、目視や左右ドアミラー、ルームミラーでは確認できない死角となるエリアに存在する他の車両等を検知するのに用いる。 The radar device 1 of the present invention is mounted on a vehicle, for example, and used as an in-vehicle radar. In the first embodiment, the radar device 1 is attached to the side surface of the vehicle 7 so that the surface of the circuit board 3 on which the transmission antenna unit 4 is mounted is inclined so as to face the rear outer side of the vehicle 7, and the radar wave is transmitted. The direction is 0 deg, the vehicle 7 side from the radar wave transmission direction is −deg, and the outside of the vehicle 7 is + deg. When this radar device 1 is used as an in-vehicle radar, it is used to detect other vehicles existing in an area that becomes a blind spot that cannot be visually confirmed, left and right door mirrors, and rearview mirrors.
　図１及び２において、レーダ装置１は、横断面がＵ字状のレドーム部２と、櫛歯状の送信アンテナ部４と、メタル部５と、送信アンテナ部４とメタル部５を有する回路基板３とから構成される。送信アンテナ部４とメタル部５は、例えば回路基板３に金属部材を印刷して形成する。 In FIGS. 1 and 2, the radar device 1 is a circuit board having a radome portion 2 having a U-shaped cross section, a comb-shaped transmitting antenna portion 4, a metal portion 5, a transmitting antenna portion 4, and a metal portion 5. It is composed of 3. The transmitting antenna portion 4 and the metal portion 5 are formed by printing a metal member on, for example, a circuit board 3.
　レドーム部２は回路基板３を覆うように配置され、回路基板３を周囲環境から保護する機能を有する。レドーム部２は、ポリカーボネイト、シンジオタクチックポリスチレン、ポリプロピレン、ＡＢＳ樹脂等の何れかで構成されている。また、送信アンテナ部４とメタル部５は、回路基板３上において、同じ厚さ（高さ）となるように構成されている。実施例１では、送信アンテナ部４とメタル部５の厚さ（高さ）を同一にすることにより、例えば回路基板３に送信アンテナ部４とメタル部５を印刷にて形成する場合、送信アンテナ部４とメタル部５を同時に印刷して形成することができ、製作工程を短縮でき、製造コストを低減することができる。 The radome portion 2 is arranged so as to cover the circuit board 3 and has a function of protecting the circuit board 3 from the surrounding environment. The radome portion 2 is made of any one of polycarbonate, syndiotactic polystyrene, polypropylene, ABS resin and the like. Further, the transmitting antenna portion 4 and the metal portion 5 are configured to have the same thickness (height) on the circuit board 3. In the first embodiment, when the transmitting antenna portion 4 and the metal portion 5 have the same thickness (height) so that the transmitting antenna portion 4 and the metal portion 5 are formed by printing on the circuit board 3, for example, the transmitting antenna The part 4 and the metal part 5 can be printed and formed at the same time, the manufacturing process can be shortened, and the manufacturing cost can be reduced.
　送信アンテナ部４は、ミリ波に代表される高周波の電磁波Ｗを周囲に放射する機能を有する。送信アンテナ部４は、例えば、鋼板、亜鉛鍍鋼板、亜鉛熔射、銅板、銅箔、アルミ板、アルミ箔等の何れかで構成する。送信アンテナ部４には、送信アンテナ部４の表面から突出した突起部４ａ，４ｂが形成されており、突起部４ａ側がメタル部５と対向している。突起部４ａ，４ｂはそれぞれの面において複数形成されている。 The transmitting antenna unit 4 has a function of radiating a high-frequency electromagnetic wave W typified by millimeter waves to the surroundings. The transmitting antenna unit 4 is made of, for example, a steel plate, a zinc-plated steel plate, zinc spray, a copper plate, a copper foil, an aluminum plate, an aluminum foil, or the like. The transmitting antenna portion 4 is formed with protrusions 4a and 4b protruding from the surface of the transmitting antenna portion 4, and the protrusion 4a side faces the metal portion 5. A plurality of protrusions 4a and 4b are formed on each surface.
　メタル部５は、回路基板３内のＧＮＤ配線など他の回路と接続されていない独立した構造であり、送信アンテナ部４に隣接して同時に形成されている。このメタル部５は、送信アンテナ部４から放射された電磁波Ｗのうち、レドーム部２の表面２１で一部が反射した電磁波成分を再反射させる機能を有する。メタル部５は、送信アンテナ部４と同一の材料、例えば、鋼板、亜鉛鍍鋼板、亜鉛熔射、銅板、銅箔、アルミ板、アルミ箔等の何れかで構成する。実施例１では、送信アンテナ部４とメタル部５の材料を同一にすることにより、製造コストを低減することができる。また、メタル部５は、送信アンテナ部４よりも車両７側に配置されている。 The metal portion 5 has an independent structure that is not connected to other circuits such as GND wiring in the circuit board 3, and is formed adjacent to the transmitting antenna portion 4 at the same time. The metal portion 5 has a function of rereflecting an electromagnetic wave component partially reflected by the surface 21 of the radome portion 2 in the electromagnetic wave W radiated from the transmitting antenna portion 4. The metal portion 5 is made of the same material as the transmitting antenna portion 4, for example, a steel plate, a zinc-plated steel plate, a zinc spray, a copper plate, a copper foil, an aluminum plate, an aluminum foil, or the like. In the first embodiment, the manufacturing cost can be reduced by using the same material for the transmitting antenna portion 4 and the metal portion 5. Further, the metal portion 5 is arranged on the vehicle 7 side with respect to the transmitting antenna portion 4.
　レドーム部２の表面と回路基板３との距離、メタル部５の形状を適切に選択することで、送信アンテナ部４から放射された電磁波Ｗのうち、レドーム部２を通過した電磁波成分Ａとレドーム部２の表面２１で反射し、さらにメタル部５で再反射してレドーム部２を通過した電磁波成分Ｂとが逆位相の関係となって、電磁波成分Ａと電磁波成分Ｂとが互いに干渉して打ち消し合い、この方向の電磁波の放射電力を減衰させることが可能となる。電磁波成分Ｂはレドーム部２の表面２１及びメタル部５で反射されるため、レドーム部２を通過する際、電磁波成分Ａに対して位相が遅れ、電磁波成分Ａに対して逆位相となる。メタル部５は、送信アンテナ部４よりも車両７側に配置されているので、車両７側に送信される電磁波の放射電力が減衰され、車両７の側面からの反射波を抑制することができる。 By appropriately selecting the distance between the surface of the radome portion 2 and the circuit board 3 and the shape of the metal portion 5, the electromagnetic wave component A and the radome that have passed through the radome portion 2 of the electromagnetic waves W radiated from the transmitting antenna portion 4 The electromagnetic wave component B, which is reflected by the surface 21 of the portion 2 and then re-reflected by the metal portion 5 and passed through the redome portion 2, has an opposite phase relationship, and the electromagnetic wave component A and the electromagnetic wave component B interfere with each other. It is possible to cancel each other out and attenuate the radiated power of electromagnetic waves in this direction. Since the electromagnetic wave component B is reflected by the surface 21 of the radome portion 2 and the metal portion 5, when passing through the radome portion 2, the phase is delayed with respect to the electromagnetic wave component A and the phase is opposite to that of the electromagnetic wave component A. Since the metal portion 5 is arranged on the vehicle 7 side with respect to the transmitting antenna portion 4, the radiated power of the electromagnetic wave transmitted to the vehicle 7 side is attenuated, and the reflected wave from the side surface of the vehicle 7 can be suppressed. ..
　また、追加となるメタル部５は、送信アンテナ部４と同時に形成可能であり、本手法による追加のコストの発生は極わずかである。 Further, the additional metal portion 5 can be formed at the same time as the transmitting antenna portion 4, and the additional cost generated by this method is extremely small.
　実施例１においては、送信アンテナ部４とメタル部５は上面から見て直線状に形成され、平行に配置されている。そして、送信アンテナ部４の表面Ｃとメタル部５の表面Ｄとの距離を、メタル部５の厚さと同等にしている。 In the first embodiment, the transmitting antenna portion 4 and the metal portion 5 are formed linearly when viewed from the upper surface and are arranged in parallel. Then, the distance between the surface C of the transmitting antenna portion 4 and the surface D of the metal portion 5 is made equal to the thickness of the metal portion 5.
　次に、図２の構成における電磁波の放射電力特性の計算例を説明する。図３は、本発明の実施例１に係る電磁波の放射電力特性における計算結果の一例を示す図である。図３では、実線はメタル部５が無い場合、破線はメタル部５がある場合を示している。 Next, a calculation example of the radiant power characteristic of the electromagnetic wave in the configuration of FIG. 2 will be described. FIG. 3 is a diagram showing an example of a calculation result in the radiant power characteristic of the electromagnetic wave according to the first embodiment of the present invention. In FIG. 3, the solid line shows the case where the metal portion 5 does not exist, and the broken line shows the case where the metal portion 5 exists.
　図３において、メタル部５を設置すると、－３０度よりも小さい角度領域において、放射電力が小さくなっている。 In FIG. 3, when the metal portion 5 is installed, the radiant power becomes small in the angle region smaller than -30 degrees.
　実施例１によれば、メタル部５を設置することにより、所定の領域の放射電力を小さくすることができる。 According to the first embodiment, the radiant power in a predetermined region can be reduced by installing the metal portion 5.
　また、実施例１によれば、放射電力を減衰させる方向を車体方向とすることで車体からの電磁波の反射波を相対的に小さくすることが可能となる。これにより、レーダ装置の信号処理において、本来の物標情報と分離することが可能となり、警報の機能を正常に動作させることが可能となる。さらに、追加となるメタル部は、送信アンテナ部と同時に形成可能であり、追加のコストの発生を抑制することができる。 Further, according to the first embodiment, it is possible to make the reflected wave of the electromagnetic wave from the vehicle body relatively small by setting the direction in which the radiant power is attenuated to the vehicle body direction. As a result, in the signal processing of the radar device, it becomes possible to separate it from the original target information, and it becomes possible to operate the alarm function normally. Further, the additional metal portion can be formed at the same time as the transmitting antenna portion, and the occurrence of additional cost can be suppressed.
　次に本発明の実施例２について説明する。実施例１と同様の構成については、同一の符号を付し、その詳細な説明は省略する。 Next, Example 2 of the present invention will be described. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
　実施例２において実施例１と異なるところは、メタル部を複数個設けた点にある。図４は本発明の実施例２に係る送信アンテナ部とメタル部の上面図であり、図５は本発明の実施例２に係る電磁波の放射電力特性における計算結果の一例を示す図である。 The difference between the second embodiment and the first embodiment is that a plurality of metal portions are provided. FIG. 4 is a top view of the transmitting antenna portion and the metal portion according to the second embodiment of the present invention, and FIG. 5 is a diagram showing an example of a calculation result in the radiant power characteristic of the electromagnetic wave according to the second embodiment of the present invention.
　図４において、送信アンテナ部４には、送信アンテナ部４の表面から突出した突起部４ａ，４ｂ（アンテナ部突起）が形成されており、突起部４ａ側がメタル部５と対向している。突起部４ａ，４ｂはそれぞれの面において複数形成されている。送信アンテナ部４は複数の突起部４ａ，４ｂにより、櫛歯状に形成されている。複数の突起部４ａの隣り合う突起部４ａ間の少なくとも１か所には、メタル部５１が配置されている。メタル部５１は複数設けられ、それぞれが隣り合う突起部４ａ同士の間に配置されている。このように構成することにより、メタル部５の設置スペースを小さくでき、回路基板３を小型化できる。実施例２では、回路基板３を小型化できることにより、製造コストを低減できると共に、レーダ装置を搭載できる対象・範囲を広げることができる。 In FIG. 4, the transmitting antenna portion 4 is formed with protrusions 4a and 4b (antenna portion protrusions) protruding from the surface of the transmitting antenna portion 4, and the protrusion 4a side faces the metal portion 5. A plurality of protrusions 4a and 4b are formed on each surface. The transmitting antenna portion 4 is formed in a comb-teeth shape by a plurality of protrusions 4a and 4b. A metal portion 51 is arranged at at least one place between the adjacent protrusions 4a of the plurality of protrusions 4a. A plurality of metal portions 51 are provided, and each of them is arranged between adjacent protrusions 4a. With such a configuration, the installation space of the metal portion 5 can be reduced, and the circuit board 3 can be miniaturized. In the second embodiment, the circuit board 3 can be miniaturized, so that the manufacturing cost can be reduced and the target and range in which the radar device can be mounted can be expanded.
　図４の構成における電磁波の放射電力特性は図５のようになる。図５では、実線はメタル部５が無い場合、破線はメタル部５１がある場合を示している。 The radiant power characteristics of electromagnetic waves in the configuration of FIG. 4 are as shown in FIG. In FIG. 5, the solid line shows the case where the metal portion 5 does not exist, and the broken line shows the case where the metal portion 51 exists.
　図５において、メタル部５１を設置すると、－１５度よりも小さい角度領域において、放射電力が小さくなっている。この効果は図２の直線状のメタル部５を配置した場合よりも大きい。さらに、３０度よりも大きい角度領域においては、放射電力を大きくする効果も得られる。 In FIG. 5, when the metal portion 51 is installed, the radiant power becomes small in the angle region smaller than -15 degrees. This effect is greater than when the linear metal portion 5 of FIG. 2 is arranged. Further, in the angle region larger than 30 degrees, the effect of increasing the radiated power can be obtained.
　実施例２によれば、送信アンテナ部４の櫛歯状に形成した複数の突起部４ａ間にメタル部５１を設置することにより、メタル部５１を配置した側における所定の領域の放射電力を小さくすることができる。また、実施例２によれば、メタル部５１を配置した側と反対側における所定の領域の放射電力を大きくすることができる。 According to the second embodiment, by installing the metal portion 51 between the plurality of protrusions 4a formed in the shape of comb teeth of the transmitting antenna portion 4, the radiant power of the predetermined region on the side where the metal portion 51 is arranged can be reduced. can do. Further, according to the second embodiment, it is possible to increase the radiant power in a predetermined region on the side opposite to the side where the metal portion 51 is arranged.
　次に本発明の実施例３について説明する。実施例１と同様の構成については、同一の符号を付し、その詳細な説明は省略する。 Next, Example 3 of the present invention will be described. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
　実施例３において実施例１と異なるところは、メタル部に複数個の突起を設けた点にある。図６は本発明の実施例３に係る送信アンテナ部とメタル部の上面図であり、図７は本発明の実施例３に係る電磁波の放射電力特性における計算結果の一例を示す図である。 The difference between Example 3 and Example 1 is that a plurality of protrusions are provided on the metal portion. FIG. 6 is a top view of the transmitting antenna portion and the metal portion according to the third embodiment of the present invention, and FIG. 7 is a diagram showing an example of a calculation result in the radiant power characteristic of the electromagnetic wave according to the third embodiment of the present invention.
　図６において、送信アンテナ部４には、送信アンテナ部４の表面から突出した突起部４ａ，４ｂが形成されており、突起部４ａ側がメタル部５２と対向している。送信アンテナ部４は櫛歯状に形成されている。また、メタル部５２の送信アンテナ部４と対向する側には、複数の突起部５２ａ（メタル部突起）が形成されている。メタル部５２の送信アンテナ部４側は、櫛歯状に形成されている。複数の突起部５２ａは、それぞれが隣り合う突起部４ａ同士の間に配置されている。すなわち、送信アンテナ部４とメタル部５２は、互いの櫛歯が噛み合うように配置されている。このように構成することにより、メタル部５の設置スペースを小さくでき、回路基板３を小型化できる。実施例３では、回路基板３を小型化できることにより、製造コストを低減できると共に、レーダ装置を搭載できる対象・範囲を広げることができる。 In FIG. 6, the transmitting antenna portion 4 is formed with protrusions 4a and 4b protruding from the surface of the transmitting antenna portion 4, and the protrusion 4a side faces the metal portion 52. The transmitting antenna portion 4 is formed in a comb-teeth shape. Further, a plurality of protrusions 52a (metal protrusions) are formed on the side of the metal portion 52 facing the transmitting antenna portion 4. The transmission antenna portion 4 side of the metal portion 52 is formed in a comb-teeth shape. The plurality of protrusions 52a are arranged between the protrusions 4a adjacent to each other. That is, the transmitting antenna portion 4 and the metal portion 52 are arranged so that their comb teeth mesh with each other. With such a configuration, the installation space of the metal portion 5 can be reduced, and the circuit board 3 can be miniaturized. In the third embodiment, the circuit board 3 can be miniaturized, so that the manufacturing cost can be reduced and the target and range in which the radar device can be mounted can be expanded.
　図７では、実線はメタル部５が無い場合、破線はメタル部５１がある場合（図４）、一点鎖線はメタル部５２がある場合（図６）を示している。 In FIG. 7, the solid line indicates the case where the metal portion 5 is not present, the broken line indicates the case where the metal portion 51 is present (FIG. 4), and the alternate long and short dash line indicates the case where the metal portion 52 is present (FIG. 6).
　図７において、メタル部５２を設置すると、－１５度よりも小さい角度領域において、放射電力が小さくなっている。さらに、－４０度よりも小さい角度領域においては図４（実施例２）の構成よりも放射電力が小さくなっている。また、３０度よりも大きい角度領域においては、図４（実施例２）の構成よりも放射電力を大きくする効果も得られる。 In FIG. 7, when the metal portion 52 is installed, the radiant power becomes small in the angle region smaller than -15 degrees. Further, in the angle region smaller than −40 degrees, the radiated power is smaller than that of the configuration of FIG. 4 (Example 2). Further, in the angle region larger than 30 degrees, the effect of increasing the radiant power as compared with the configuration of FIG. 4 (Example 2) can be obtained.
　実施例３によれば、送信アンテナ部４の櫛歯状に形成した複数の突起部４ａ間にメタル部５２の櫛歯状に形成した複数の突起部５２ａを設置することにより、メタル部５２を配置した側における所定の領域の放射電力を小さくすることができる。また、実施例３によれば、メタル部５２を配置した側と反対側における所定の領域の放射電力を大きくすることができる。 According to the third embodiment, the metal portion 52 is formed by installing the plurality of protrusions 52a formed in the shape of a comb of the metal portion 52 between the plurality of protrusions 4a formed in the shape of a comb of the transmitting antenna portion 4. The radiant power in a predetermined area on the arranged side can be reduced. Further, according to the third embodiment, it is possible to increase the radiant power in a predetermined region on the side opposite to the side where the metal portion 52 is arranged.
　実施例１～３では、メタル部を回路基板上に配置した構成を示したが、メタル部はこの配置に限定されるものではない。例えばレドーム部の側面から延ばしたリブに載置するようにしても良い。或いは、回路基板３に載置部を設け、この載置部にメタル部を載置するようにしても良い。メタル部はレドーム部で囲まれる空間内に配置すれば良い。 In Examples 1 to 3, the configuration in which the metal portion is arranged on the circuit board is shown, but the metal portion is not limited to this arrangement. For example, it may be placed on a rib extending from the side surface of the radome portion. Alternatively, a mounting portion may be provided on the circuit board 3 and a metal portion may be mounted on the mounting portion. The metal part may be arranged in the space surrounded by the radome part.
　以上、本発明の実施例について説明したが、本発明は上記実施例に限定されるものではない。従って、本発明の概念や要旨から逸脱しない範囲において様々な形態で実施することが可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. Therefore, it can be carried out in various forms without departing from the concept and gist of the present invention.
　１…レーダ装置、２…レドーム部、３…回路基板、３…回路基板、４…送信アンテナ部、４ａ，４ｂ…突起部（アンテナ部突起）、５，５１，５２…メタル部、７…車両、２１…表面、５２ａ…複数の突起部（メタル部突起） 1 ... Radar device, 2 ... Radome part, 3 ... Circuit board, 3 ... Circuit board, 4 ... Transmit antenna part, 4a, 4b ... Projection part (antenna part protrusion), 5, 51, 52 ... Metal part, 7 ... Vehicle , 21 ... Surface, 52a ... Multiple protrusions (metal protrusions)

Claims (8)

  1. 　電磁波を送信する送信アンテナ部を備えた回路基板と、前記回路基板を覆うレドーム部を備えたレーダ装置であって、
    　前記レドーム部で囲まれる空間内に、回路と接続されていないメタル部を備えたことを特徴とするレーダ装置。     A radar device including a circuit board having a transmitting antenna portion for transmitting electromagnetic waves and a radome portion covering the circuit board.
    A radar device characterized in that a metal portion not connected to a circuit is provided in a space surrounded by the radome portion.
  2. 　請求項１において、
    　前記メタル部は、前記回路基板上に配置したことを特徴とするレーダ装置。     In claim 1,
    The radar device is characterized in that the metal portion is arranged on the circuit board.
  3. 　請求項１において、
    　前記メタル部は、前記送信アンテナ部から送信された電磁波を反射することを特徴とするレーダ装置。     In claim 1,
    The metal portion is a radar device characterized in that it reflects an electromagnetic wave transmitted from the transmitting antenna portion.
  4. 　請求項３において、
    　前記送信アンテナ部と前記メタル部は、鋼板、亜鉛鍍鋼板、亜鉛熔射、銅板、銅箔、アルミ板、アルミ箔の何れかで構成したことを特徴とするレーダ装置。     In claim 3,
    A radar device characterized in that the transmitting antenna portion and the metal portion are made of any one of a steel plate, a zinc-plated steel plate, zinc spray, a copper plate, a copper foil, an aluminum plate, and an aluminum foil.
  5. 　請求項２において、
    　前記送信アンテナ部と前記メタル部は、同じ厚さとすることを特徴とするレーダ装置。     In claim 2,
    A radar device characterized in that the transmitting antenna portion and the metal portion have the same thickness.
  6. 　請求項２において、
    　前記送信アンテナ部と前記メタル部は直線状に形成され、平行に配置されていることを特徴とするレーダ装置。     In claim 2,
    A radar device characterized in that the transmitting antenna portion and the metal portion are formed in a straight line and are arranged in parallel.
  7. 　請求項２において、
    　前記送信アンテナ部は、前記メタル部に向けて突出した複数の突起を備え、前記複数の突起の隣り合う突起間の少なくとも１か所に前記メタル部を配置したことを特徴とするレーダ装置。     In claim 2,
    The transmitting antenna portion is a radar device including a plurality of protrusions protruding toward the metal portion, and the metal portion is arranged at at least one place between adjacent protrusions of the plurality of protrusions.
  8. 　請求項１において、
    　前記レーダ装置は車両に取付けられた際、前記車両側に前記メタル部を配置したことを特徴とするレーダ装置。     In claim 1,
    The radar device is a radar device characterized in that when the radar device is attached to a vehicle, the metal portion is arranged on the vehicle side.
PCT/JP2021/033467 2020-12-07 2021-09-13 Radar device WO2022123845A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001127523A (en) * 1999-10-29 2001-05-11 Mitsubishi Electric Corp Microstrip array antenna with radome
JP2010109890A (en) * 2008-10-31 2010-05-13 Mitsubishi Electric Corp Antenna device
WO2014178125A1 (en) * 2013-04-30 2014-11-06 古河電気工業株式会社 Radar apparatus
US20150097730A1 (en) * 2013-10-08 2015-04-09 Robert Bosch Gmbh Radar sensor including a radome
US20170179586A1 (en) * 2015-12-17 2017-06-22 Robert Bosch Gmbh Device for receiving microwave radiation
JP2019041224A (en) * 2017-08-24 2019-03-14 株式会社デンソーテン Antenna device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6171277B2 (en) 2012-07-13 2017-08-02 株式会社デンソー Radar equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001127523A (en) * 1999-10-29 2001-05-11 Mitsubishi Electric Corp Microstrip array antenna with radome
JP2010109890A (en) * 2008-10-31 2010-05-13 Mitsubishi Electric Corp Antenna device
WO2014178125A1 (en) * 2013-04-30 2014-11-06 古河電気工業株式会社 Radar apparatus
US20150097730A1 (en) * 2013-10-08 2015-04-09 Robert Bosch Gmbh Radar sensor including a radome
US20170179586A1 (en) * 2015-12-17 2017-06-22 Robert Bosch Gmbh Device for receiving microwave radiation
JP2019041224A (en) * 2017-08-24 2019-03-14 株式会社デンソーテン Antenna device

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