WO2020230696A1 - Dispositif d'antenne - Google Patents

Dispositif d'antenne Download PDF

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Publication number
WO2020230696A1
WO2020230696A1 PCT/JP2020/018548 JP2020018548W WO2020230696A1 WO 2020230696 A1 WO2020230696 A1 WO 2020230696A1 JP 2020018548 W JP2020018548 W JP 2020018548W WO 2020230696 A1 WO2020230696 A1 WO 2020230696A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna element
shielding member
antenna device
antenna
vehicle
Prior art date
Application number
PCT/JP2020/018548
Other languages
English (en)
Japanese (ja)
Inventor
豊 今村
Original Assignee
原田工業株式会社
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=73222944&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2020230696(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 原田工業株式会社 filed Critical 原田工業株式会社
Publication of WO2020230696A1 publication Critical patent/WO2020230696A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system

Definitions

  • a circuit board is further provided that is separated from the shielding member and electrically connected to the antenna element, and the circuit board is mounted on the antenna element in a state of being housed in the cover, or the vehicle. It may be arranged inside.
  • the circuit board By housing the circuit board in the cover, the circuit board can be protected from water droplets and the like. Further, by arranging the circuit board in the vehicle, the circuit board can be protected from water droplets and the like, and the antenna device can be miniaturized.
  • the power feeding unit 12 has a substantially rod shape and extends along the Z direction between the antenna element 2 and the circuit board 4.
  • the power feeding unit 12 may have a length of, for example, 10 mm or more and 50 mm or less in the Z direction.
  • the feeding unit 12 may have a length corresponding to the distance between the antenna element 2 and the shielding member 3 along the direction Z.
  • the distance between the antenna element 2 and the shielding member 3 along the direction Z is not limited to 10 mm or more and 50 mm or less.
  • the shielding member 3 is arranged between the antenna element 2 and the noise generation source of the vehicle in order to block the noise from the noise generation source toward the antenna element 2.
  • the shielding member 3 is grounded, for example, by being electrically connected to a metal member of the vehicle.
  • the shielding member 3 may be in direct contact with the metal member of the vehicle, or may be electrically connected to the metal member of the vehicle via a bracket, a ground wire, or the like.
  • Examples of noise generation sources in the vehicle include electrical components such as vehicle lamps, wipers, back cameras, compressors, inverters, and motors, and electronic devices such as monitors mounted in the vehicle. These noise generation sources may be limited depending on the position where the antenna device 1 is installed.
  • the amplifier circuit 32 is a kind of integrated circuit, and is provided on the main surface 31b of the substrate portion 31. In one embodiment, all integrated circuits and capacitances other than the amplifier circuit 32 may be provided on the main surface 31b. Further, the cable 6 is connected to the wiring pattern on the main surface 31b.
  • the circuit board 4 may be provided with an inductor that is electrically connected to the wiring pattern of the circuit board 4 and the power feeding unit 12.
  • the inductor is, for example, an air-core coil, and realizes miniaturization of the antenna device 1 while maintaining the electric length of the antenna device 1.
  • the inductor may be provided on the main surface 31a from the viewpoint of reducing loss.
  • the antenna device 1 is mounted on the vehicle body structure 101 of the vehicle 100. Specifically, the antenna device 1 is arranged in the rear spoiler 120 provided behind the roof 101b of the vehicle 100.
  • the rear spoiler 120 is made of an insulating resin and is provided above the back door 101a of the vehicle body structure 101.
  • the shielding member 3 of the antenna device 1 is fixed to the upper part of the back door 101a of the vehicle 100 by using the bracket 24 and the fastening member 111.
  • the shielding member 3 is grounded by being electrically connected to the vehicle body structure 101 via the bracket 24 and the fastening members 111 and 112 having conductivity in this way.
  • the first region R1 of the antenna element 2 is arranged at a position distant from the second region R2 with respect to the vehicle 100, that is, behind the vehicle 100.
  • the shielding member 3 is attached to the vehicle body structure 101 by the bracket 24.
  • FIG. 7 is a top view of the antenna device 1A according to the second embodiment
  • FIG. 8 is a bottom view of the antenna device 1A.
  • Comparative Experimental Example 1 a flat antenna not provided with the shielding member 3 was used as the antenna device.
  • Comparative Experimental Example 2 an antenna device was used in which the entire surface of the antenna element was arranged so as to overlap the shielding member in a plan view.
  • the antenna device according to the various embodiments has been described above, various modifications can be configured without changing the gist of the invention without being limited to the above-described embodiment.
  • at least one of the antenna element 2 and the shielding member 3 of the antenna device 1 of the first embodiment may have flexibility.
  • the antenna element 2 or the shielding member 3 can be easily deformed into a shape along the inner surface of the rear spoiler 120, the antenna device 1 can be easily housed in the rear spoiler 120.
  • the antenna device 1 is provided in the rear spoiler 120 above the back door 101a, but the installation position of the antenna device 1 is not limited to the inside of the rear spoiler 120.
  • the antenna device 1 may be provided, for example, on the side door or the front part of the roof of the vehicle 100. Further, the antenna device 1 may be provided in an exterior component of the vehicle 100, which is different from the rear spoiler 120.
  • the vehicle body structure 101 that functions as a shield may not intervene between the antenna element 2 and the noise generation source. Even in such a case, in the antenna device 1, since the shielding member 3 is connected to the antenna element 2, noise can be blocked by the shielding member 3.
  • the shielding members 3, 70 may be composed of, for example, a mesh-like or lattice-like conductive member.
  • the shape of the mesh or grid can have any shape such as round, quadrangular, triangular, and hexagonal.
  • the shielding members 3 and 70 may be a plate material in which the surface of the insulating material is coated with a conductive material.
  • Such shielding members 3, 70 are formed, for example, by applying a conductive material to a resin plate-shaped member, depositing a conductive material, or plating the conductive material.
  • the relationship between the length of the ground wire 7 and the noise blocking performance was evaluated. Specifically, in Experimental Example 7, the length of the ground wire 7 of the antenna device 1B was adjusted to measure the shield amount of the antenna device 1B.
  • the amount of shield refers to the peak sensitivity of the antenna device when noise is radiated from the antenna element 2 side along the Z direction and the antenna device when noise is radiated from the shield member 3 side along the Z direction. It shows the difference from the peak sensitivity of. The larger the amount of shielding, the higher the noise blocking performance of the shielding member 3.
  • FIG. 13 is a schematic plan view of the antenna device 1C according to the second modification.
  • the shielding member 3 of the antenna device 1C further includes a fourth plate portion 61 and a fifth plate portion 62.
  • the fourth plate portion 61 is connected to the first plate portion 21.
  • the fifth plate portion 62 is connected to the second plate portion 22.
  • the fourth plate portion 61 and the fifth plate portion 62 are provided in the vicinity of the circuit board 4.
  • the fourth plate portion 61 and the fifth plate portion 62 may be formed by bending a part of the first plate portion 21 and a part of the second plate portion 22, respectively.
  • the second antenna element 82 is provided at a position displaced in the Y direction with respect to the first antenna element 80, and is arranged at a position not overlapping the shielding member 3 when viewed from the Z direction.
  • the second antenna element 82 is made of metal or alloy and has a substantially L-shape in a plan view from the Z direction.
  • FIG. 18 is a side view of the second antenna element 82 as viewed from the Y direction. As shown in FIG. 18, the second antenna element 82 includes a first plate portion 82a, a second plate portion 82b, and a third plate portion 82c.
  • a part of the first antenna element 80 and at least a part of the shielding member 3 are arranged so as to overlap each other, and the second antenna element 82 and the shielding member 3 do not overlap each other. It is arranged like this. That is, of the first antenna element 80 and the second antenna element 82, only the first antenna element 80 is shielded by the shielding member 3. Since the antenna element for the AM signal is not easily affected by the surrounding conductors, the first antenna element 80 is shielded by the shielding member 3 while ensuring the reception sensitivity of the AM signal. The noise toward the air can be suppressed by the shielding member 3.
  • the antenna device 1F since only the first antenna element 80 for the AM signal is shielded by the shielding member 3, the separation distance between the first antenna element 80 and the shielding member 3 can be reduced. As a result, the antenna device 1F can be downsized. Further, since the second antenna element 82 has a substantially U-shaped (U-shaped) folded shape, it is possible to miniaturize the antenna device 1F while ensuring the reception sensitivity of the FM signal. It becomes.
  • the shielding member included in the antenna device of such an embodiment is provided so as to suppress the intrusion of noise into the antenna element for AM, for example, while not suppressing the intrusion of noise into the antenna element for DTV. This is because the frequency for AM radio is lower than the frequency for radio waves for DTV.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

Un mode de réalisation de la présente invention concerne un dispositif d'antenne comprenant : un élément d'antenne disposé le long d'une première surface plate ; un élément de protection qui est disposé entre l'élément d'antenne et une source de génération de bruit d'un véhicule et qui est disposé de manière à être séparé de l'élément d'antenne, au moins une partie de l'élément de protection étant disposée le long d'une seconde surface plate faisant face à la première surface plate ; et un élément isolant qui est constitué d'un matériau isolant et qui raccorde l'élément d'antenne à l'élément de protection. Une partie de l'élément d'antenne et au moins une partie de l'élément de protection sont disposées de manière à se chevaucher l'une l'autre vu depuis la direction dans laquelle la première surface plate et la seconde surface plate se font face.
PCT/JP2020/018548 2019-05-10 2020-05-07 Dispositif d'antenne WO2020230696A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-089924 2019-05-10
JP2019089924A JP6818078B2 (ja) 2019-05-10 2019-05-10 アンテナ装置

Publications (1)

Publication Number Publication Date
WO2020230696A1 true WO2020230696A1 (fr) 2020-11-19

Family

ID=73222944

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/018548 WO2020230696A1 (fr) 2019-05-10 2020-05-07 Dispositif d'antenne

Country Status (2)

Country Link
JP (1) JP6818078B2 (fr)
WO (1) WO2020230696A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022215713A1 (fr) * 2021-04-06 2022-10-13 ミツミ電機株式会社 Dispositif d'antenne

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194133A (en) * 1981-05-25 1982-11-29 Nissan Motor Co Ltd Wiring device for car
JPH02126413U (fr) * 1989-03-28 1990-10-18
JPH09307334A (ja) * 1996-03-13 1997-11-28 Mazda Motor Corp アンテナのアース構造及び車載用アンテナ装置
JP2007153019A (ja) * 2005-12-01 2007-06-21 Yagi Antenna Co Ltd ドア内蔵車載アンテナ
JP2009094901A (ja) * 2007-10-10 2009-04-30 Yokowo Co Ltd アンテナ装置
JP2009158990A (ja) * 2007-12-25 2009-07-16 Kojima Press Co Ltd アンテナ内蔵車両外装品
JP2018121143A (ja) * 2017-01-24 2018-08-02 原田工業株式会社 複合アンテナ装置
WO2019073691A1 (fr) * 2017-10-10 2019-04-18 原田工業株式会社 Dispositif d'antenne intégré à une carrosserie de véhicule

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194133A (en) * 1981-05-25 1982-11-29 Nissan Motor Co Ltd Wiring device for car
JPH02126413U (fr) * 1989-03-28 1990-10-18
JPH09307334A (ja) * 1996-03-13 1997-11-28 Mazda Motor Corp アンテナのアース構造及び車載用アンテナ装置
JP2007153019A (ja) * 2005-12-01 2007-06-21 Yagi Antenna Co Ltd ドア内蔵車載アンテナ
JP2009094901A (ja) * 2007-10-10 2009-04-30 Yokowo Co Ltd アンテナ装置
JP2009158990A (ja) * 2007-12-25 2009-07-16 Kojima Press Co Ltd アンテナ内蔵車両外装品
JP2018121143A (ja) * 2017-01-24 2018-08-02 原田工業株式会社 複合アンテナ装置
WO2019073691A1 (fr) * 2017-10-10 2019-04-18 原田工業株式会社 Dispositif d'antenne intégré à une carrosserie de véhicule

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022215713A1 (fr) * 2021-04-06 2022-10-13 ミツミ電機株式会社 Dispositif d'antenne

Also Published As

Publication number Publication date
JP2020188311A (ja) 2020-11-19
JP6818078B2 (ja) 2021-01-20

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