WO2020090718A1 - 車両用アンテナシステム - Google Patents
車両用アンテナシステム Download PDFInfo
- Publication number
- WO2020090718A1 WO2020090718A1 PCT/JP2019/042136 JP2019042136W WO2020090718A1 WO 2020090718 A1 WO2020090718 A1 WO 2020090718A1 JP 2019042136 W JP2019042136 W JP 2019042136W WO 2020090718 A1 WO2020090718 A1 WO 2020090718A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- substrate
- vehicle
- dielectric
- substrate surface
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- 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
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3283—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle side-mounted antennas, e.g. bumper-mounted, door-mounted
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/206—Microstrip transmission line antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
Definitions
- the present invention relates to a vehicle antenna system.
- an on-vehicle antenna device used for LTE there is an antenna device arranged on a rear spoiler (for example, refer to Patent Document 1).
- an antenna device arranged on a rear spoiler for example, refer to Patent Document 1.
- a shark fin type antenna device arranged on a roof for example, refer to Patent Document 2.
- a conventional single antenna placed at one location on the vehicle can achieve both improved antenna gain and wider directivity. Difficult to make In addition, it is difficult for a conventional single antenna device to support both horizontal polarization and vertical polarization that realizes high antenna gain.
- the present disclosure provides a vehicle antenna system that can achieve both improvement of antenna gain and widening of directivity and has small polarization dependence.
- the vehicle is provided with a plurality of antenna sets provided on or near at least one of the front and rear sides and the left and right sides of the vehicle.
- a first antenna set included in the plurality of antenna sets has a first antenna and a second antenna
- a second antenna set included in the plurality of antenna sets has a third antenna and a fourth antenna
- a third antenna set included in the plurality of antenna sets has a fifth antenna and a sixth antenna
- a fourth antenna set included in the plurality of antenna sets has a seventh antenna and an eighth antenna
- the first antenna, the third antenna, the fifth antenna, and the seventh antenna each have a higher antenna gain when transmitting and receiving horizontal polarization than when transmitting and receiving vertical polarization.
- the second antenna, the fourth antenna, the sixth antenna, and the eighth antenna each have a higher antenna gain when transmitting and receiving vertical polarization than when transmitting and receiving horizontal polarization.
- An antenna system for a vehicle, which is a highly vertically polarized antenna, is provided.
- an antenna system for a vehicle that can achieve both improvement of antenna gain and widening of directivity and has small polarization dependence.
- FIG. 9 is a diagram showing the directivity of FIG. 7 and the directivity of FIG. 8 together. It is a figure which shows an example of the vehicle which mounts the antenna system for vehicles of another embodiment concerning this indication in a top view. It is a figure which shows an example of the vehicle which mounts the antenna system for vehicles of another embodiment concerning this indication in a top view.
- a deviation such as a parallel, a right angle, a right angle, a horizontal direction, a vertical direction, a vertical direction, a horizontal direction, and the like is allowed to the extent that the effect of the present invention is not impaired.
- the X-axis direction, the Y-axis direction, and the Z-axis direction respectively represent a direction parallel to the X-axis, a direction parallel to the Y-axis, and a direction parallel to the Z-axis.
- the X-axis direction, the Y-axis direction, and the Z-axis direction are orthogonal to each other.
- An XY plane, a YZ plane, and a ZX plane are a virtual plane parallel to the X-axis direction and the Y-axis direction, a virtual plane parallel to the Y-axis direction and the Z-axis direction, and a virtual plane parallel to the Z-axis direction and the X-axis direction, respectively. Represents.
- the vehicle antenna system according to the present disclosure has a high frequency band such as a microwave and a millimeter wave (for example, an SHF (Super High Frequency) band of 3 to 30 GHz and an EHF (Extremely High Frequency) band of 30 to 300 GHz).
- a high frequency band such as a microwave and a millimeter wave
- Send and receive radio waves Send and receive radio waves.
- the vehicle antenna system according to the present disclosure is applicable to, for example, a V2X communication system, a fifth generation mobile communication system (so-called 5G), an in-vehicle radar system, and the like, but the applicable system is not limited to these. Absent.
- FIG. 1 is a diagram showing from above an example of a vehicle equipped with a vehicle antenna system according to an embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating an example of a vehicle in which the vehicle antenna system according to the embodiment of the present disclosure is mounted in a side view.
- the antenna system 101 shown in FIGS. 1 and 2 is an example of a vehicle antenna system including a plurality of antenna sets provided on or near dielectrics on at least one of the front and rear sides and the left and right sides of the vehicle 100.
- the X-axis direction corresponds to the vehicle width direction of the vehicle 100
- the Y-axis direction corresponds to the front-back direction of the vehicle 100
- the Z-axis direction corresponds to the vertical direction of the vehicle 100.
- the XY plane corresponds to the horizontal plane
- the Z-axis direction corresponds to the direction perpendicular to the horizontal plane (vertical direction).
- the first antenna set 1 is provided in the vicinity of the front windshield 110, which is a dielectric, on the front side of the vehicle 100, and more specifically, is installed in the vicinity of the inside of the passenger compartment at the upper center of the windshield 110.
- the second antenna set 2 is provided in the vicinity of the right fixed window glass 120 which is a dielectric on the right side of the vehicle 100, and more specifically, the vehicle at the front end of the right fixed window glass 120. It is installed near the indoor side.
- the third antenna set 3 is provided in the vicinity of the rear glass 130, which is a dielectric, on the rear side of the vehicle 100, and more specifically, is installed in the vicinity of the inside of the vehicle in the upper center of the rear glass 130.
- the fourth antenna set 4 is provided in the vicinity of the left fixed window glass 140, which is a dielectric on the left side of the vehicle 100, and more specifically, the vehicle at the front end of the left fixed window glass 140. It is installed near the indoor side.
- Each antenna set is formed so as to be able to transmit and receive radio waves of a predetermined frequency included in a range of 3 GHz or more and 100 GHz or less, for example.
- the first antenna set 1 has a first antenna 11 and a second antenna 12, and the second antenna set 2 has a third antenna 13 and a fourth antenna 14.
- the third antenna set 3 has a fifth antenna 15 and a sixth antenna 16, and the fourth antenna set 4 has a seventh antenna 17 and an eighth antenna 18.
- Each of the first antenna 11, the third antenna 13, the fifth antenna 15, and the seventh antenna 17 has a higher antenna gain when transmitting and receiving horizontal polarization than when transmitting and receiving vertical polarization. It is a high horizontal polarization antenna.
- Each of the second antenna 12, the fourth antenna 14, the sixth antenna 16, and the eighth antenna 18 has a higher antenna gain when transmitting and receiving vertical polarization than when transmitting and receiving horizontal polarization. It is a high vertically polarized antenna.
- G H ⁇ G V is 10 [dB].
- the cross polarization discrimination degree between the horizontal polarization antenna and the vertical polarization antenna may be 10 [dB] or more, and more preferably 15 [dB] or more.
- G V ⁇ G H is 10 [dB].
- the cross polarization discrimination degree between the vertically polarized antenna and the horizontally polarized antenna may be 10 [dB] or more, and more preferably 15 [dB] or more.
- the antenna system 101 In the antenna system 101, four antenna sets 1, 2, 3 and 4 are distributed in the front, rear, left and right of the vehicle 100. Therefore, even if the beam width of one or a plurality of antenna sets among the antenna sets 1, 2, 3 and 4 is narrowed by narrowing the beam widths of those antenna sets, the beam widths of the remaining antenna sets are reduced. The antenna gain reduction due to the narrowing can be covered. Therefore, the antenna system 101 can achieve both improvement of the antenna gain and widening of the directivity as compared with the case where a single antenna is installed at one place on the vehicle.
- the beam width here can be considered as, for example, a half-value angle centered on the main beam.
- each of the antenna sets 1, 2, 3, and 4 has both a horizontal polarization antenna and a vertical polarization antenna. Therefore, the antenna system 101 can handle both horizontal polarization and vertical polarization, and can reduce polarization dependence.
- the present embodiment it is possible to provide a vehicle antenna system that can achieve both the improvement of the antenna gain and the widening of the directivity and the effect of reducing the polarization dependence.
- NLOS Non Line Of Sight
- the first antenna 11 and the second antenna 12 each have a main beam in terms of achieving both improvement of antenna gain and widening of directivity and reduction of polarization dependence.
- the first substrate 51 and the second substrate 52 are It is preferable that the antennas are arranged so that their normal directions to the antenna surfaces are different from each other.
- the “antenna surface” corresponds to the plane (more specifically, the substrate surface).
- the direction of the main beam (also referred to as the main lobe) is the direction in which the antenna gain is highest measured with respect to an arbitrary reference point on the vehicle (for example, the location where the antenna set is installed) (maximum gain direction). ) Represents.
- each of the third antenna 13 and the fourth antenna 14 is different in that the improvement of the antenna gain and the widening of the directivity can both be achieved and the polarization dependence can be reduced. It is preferable that the main beams are arranged in different directions. For example, when the third antenna 13 is provided on the third substrate 53 and the fourth antenna 14 is provided on the fourth substrate 54, the third substrate 53 and the fourth substrate 54 are mutually It is preferable that the antennas are arranged so that their normal directions to the antenna surface are different.
- the fifth antenna 15 and the sixth antenna 16 each have a point that both improvement of the antenna gain and widening of the directivity can be achieved and polarization dependence is reduced. It is preferable that the main beams are arranged in different directions. For example, when the fifth antenna 15 is provided on the fifth substrate 55 and the sixth antenna 16 is provided on the sixth substrate 56, the fifth substrate 55 and the sixth substrate 56 are provided with each other. It is preferable that the antennas are arranged so that their normal directions to the antenna surface are different.
- the seventh antenna 17 and the eighth antenna 18 are respectively different from the viewpoint that both the improvement of the antenna gain and the widening of the directivity can be achieved and the polarization dependence is reduced. It is preferable that the main beams are arranged in different directions. For example, when the seventh antenna 17 is provided on the seventh substrate 57 and the eighth antenna 18 is provided on the eighth substrate 58, the seventh substrate 57 and the eighth substrate 58 are provided with each other. It is preferable that the antennas are arranged so that their normal directions to the antenna surface are different.
- the directivity of the antenna system 101 on a horizontal plane centering on the vehicle 100 can be made close to omnidirectional. Further, it is possible to improve the reception sensitivity of both the horizontally polarized wave and the vertically polarized wave that come from each direction of all directions (that is, improve the non-polarization property).
- the antennas 11 to 18 are arranged so that the directions of their respective main beams are all different.
- the substrates 51 to 58 are arranged such that the normal directions to the respective antenna surfaces are all different.
- FIG. 3 shows that the directions of the main beams of the antennas 11 to 18 when the vehicle 100 is viewed from above are all different.
- 11h, 12v, 13h, 14v, 15h, 16v, 17h, and 18v represent half-value angles around the main beam formed by the antennas 11 to 18 when the vehicle 100 is viewed from above.
- the directions of the main beams formed by the antennas 11 to 18 when the vehicle 100 is viewed from above correspond to the centers of the respective half-value angles.
- each antenna may be set so that the normal directions of the substrates 51 to 58 are all different.
- the direction of the main beam of the antennas 11, 13, 15, 17 for horizontal polarization and the direction of the main beam of the antennas 12, 14, 16, 18 for vertical polarization show the vehicle 100 upward. It shows that they exist in a clockwise direction when viewed from.
- the antennas 11 to 18 such that the directions of the main beams of the horizontally polarized wave and the vertically polarized wave are alternately present in the clockwise direction, the antenna system 101 on the horizontal plane centered on the vehicle 100 is provided.
- the directivity of can be made more omnidirectional. Further, it is possible to further improve the reception sensitivity of both the horizontally polarized wave and the vertically polarized wave coming from each direction of all directions.
- the angle formed by the direction of the main beam of the first antenna 11 and the direction of the main beam of the second antenna 12 is referred to as ⁇ 12 .
- the angle ⁇ 12 is preferably 90 ° or more and less than 180 °, more preferably 100 ° or more and 170 ° or less, still more preferably 110 ° or more and 160 ° or less.
- the angle formed by the first substrate 51 and the second substrate 52 is referred to as ⁇ 12 .
- angles ⁇ 34 , ⁇ 56 , and angle ⁇ 78 described later are the cases where the substrate surface and the antenna surface are arranged in parallel in each antenna.
- the angle ⁇ 12 is preferably 90 ° or more and less than 180 °, more preferably 100 ° or more and 170 ° or less, still more preferably 110 ° or more and 160 ° or less.
- the angle ⁇ 34 formed by the direction of the main beam of the third antenna 13 and the direction of the main beam of the fourth antenna 14 is preferably in the same angular range as the angle ⁇ 12 for the same reason.
- the angle ⁇ 34 formed by the third substrate 53 and the fourth substrate 54 is preferably in the same angle range as the angle ⁇ 12 for the same reason. The same applies to the angle ⁇ 56 formed by the fifth substrate 55 and the sixth substrate 56 and the angle ⁇ 78 formed by the seventh substrate 57 and the eighth substrate 58.
- the antennas 11 to 18 are preferably arranged so that the elevation angle ⁇ in the direction of each main beam is 0 ° or more and 60 ° or less, and preferably 10 ° or more and 60 ° or less.
- the substrates 51 to 58 in each antenna are preferably arranged such that the elevation angle ⁇ in the normal direction is 0 ° or more and 60 ° or less, and preferably 10 ° or more and 60 ° or less. .. That is, in this case, the elevation angle ⁇ becomes equal to the elevation angle ⁇ .
- FIG. 4 is a diagram showing an elevation angle ⁇ or an elevation angle ⁇ .
- the elevation angle ⁇ or the elevation angle ⁇ represents an angle formed with the horizontal plane 90, and the broken line in the drawing indicates the direction of the main beam.
- the elevation angle ⁇ or the elevation angle ⁇ in the angle range of 10 ° or more and 60 ° or less, it is possible to improve the reception sensitivity of both the vertically polarized wave and the horizontally polarized wave coming from above the vehicle 100.
- the first antenna set 1 is provided on the windshield 110, which is an example of a dielectric on the front side of the vehicle 100, or in the vicinity thereof.
- the arrangement (alignment direction) of the first antenna 11 and the second antenna 12 is not particularly limited, but when the vehicle 100 is viewed from above, the direction of each main beam is as shown in FIG. It is preferable that they are arranged side by side in the horizontal direction (X-axis direction in the case of FIG. 1) so as to face the front region of the.
- the obstruction of the view through the windshield 110 is suppressed as compared with the case where the first antenna 11 and the second antenna 12 are arranged side by side in the direction perpendicular to the horizontal plane.
- the first substrate 51 and the second substrate 52 are arranged side by side in the horizontal direction so as to face the front region of the vehicle 100 in order to suppress the obstruction of the view through the windshield 110. It is preferably arranged.
- the first antenna set is provided on the windshield 110, for example, it may be overlapped with at least a part or the whole of a shielding film (not shown) around the windshield 110, or the front glass 110 and the rear view mirror. If it is provided between them, it is easy to suppress the obstruction of the view through the windshield 110.
- the concealing film include ceramics such as a black ceramics film.
- the third antenna set 3 is provided on the rear glass 130, which is an example of a dielectric on the rear side of the vehicle 100, or in the vicinity thereof.
- the arrangement (arrangement direction) of the fifth antenna 15 and the sixth antenna 16 is not particularly limited, but the direction of each main beam when the vehicle 100 is viewed from above is as shown in FIG. It is preferable that they are arranged side by side in the horizontal direction (X-axis direction in the case of FIG. 1) so as to face the rear region of the.
- the fifth antenna 15 and the sixth antenna 16 are arranged side by side in the horizontal direction, it is possible to suppress the obstruction of the view through the rear glass 130 as compared with the case where the fifth antenna 15 and the sixth antenna 16 are arranged side by side in the direction perpendicular to the horizontal plane.
- the fifth substrate 55 and the sixth substrate 56 are arranged side by side in the horizontal direction so as to face the rear area of the vehicle 100.
- the third antenna set is provided on the rear glass 130, for example, if it is overlapped with at least a part or all of the shielding film around the rear glass 130, it is easy to suppress the blocking of the view through the rear glass 130.
- the second antenna set 2 is provided on the right fixed window glass 120, which is an example of the dielectric on the right side of the vehicle 100, or in the vicinity thereof.
- the arrangement (arrangement direction) of the third antenna 13 and the fourth antenna 14 is not particularly limited, but when the vehicle 100 is viewed from above, the direction of each main beam is as shown in FIG.
- the direction of each main beam is as shown in FIG.
- the obstruction of the view through the fixed window glass 120 on the right side is suppressed as compared with the case where they are arranged side by side in the horizontal direction. Often you can. This is because the fixed window glass 120 on the right side has a shorter horizontal length than other window glasses such as the windshield 110.
- the third substrate 53 and the fourth substrate 54 are vertically arranged so as to face the right region of the vehicle 100. It is preferable that they are arranged side by side in the direction.
- the second antenna set 2 When the second antenna set 2 is provided on the fixed window glass 120 on the right side, for example, if it is made to overlap at least a part or all of the shielding film around the fixed window glass 120 on the right side, It is easy to control the obstruction of visibility.
- the second antenna set 2 When a resin frame is provided around the right fixed window glass 120 as a dielectric, the second antenna set 2 may be overlapped with a part or all of the resin frame so that a predetermined antenna gain can be obtained. By doing so, it is easy to suppress the obstruction of the view through the fixed window glass 120 on the right side.
- the fourth antenna set 4 is provided on or near the left fixed window glass 140, which is an example of a dielectric on the left side of the vehicle 100.
- the arrangement (direction in which the seventh antenna 17 and the eighth antenna 18 are arranged) is not particularly limited, but when the vehicle 100 is viewed from above, the direction of each main beam is as shown in FIG. Are preferably arranged side by side in the direction perpendicular to the horizontal plane (vertical direction; in the case of FIG. 1, the Z-axis direction) so as to face the left side region.
- the seventh antenna 17 and the eighth antenna 18 are arranged side by side in the vertical direction, as compared with the case where the seventh antenna 17 and the eighth antenna 18 are arranged side by side in the horizontal direction, blocking of the view through the left fixed window glass 140 is suppressed. Often you can. This is because the left fixed windowpane 140 has a horizontal length shorter than that of other windowpanes such as the windshield 110.
- the seventh substrate 57 and the eighth substrate 58 are vertically arranged so as to face the left region of the vehicle 100. It is preferable that they are arranged side by side in the direction.
- the fourth antenna set 4 When the fourth antenna set 4 is provided on the left fixed window glass 140, for example, when it is made to overlap with at least a part or all of the shielding film around the left fixed window glass 140, the fourth antenna set 4 is provided over the fixed window glass 140. It is easy to control the obstruction of visibility.
- the fourth antenna set 4 When a resin frame is provided around the left fixed window glass 140 as a dielectric, the fourth antenna set 4 may be overlapped with part or all of the resin frame so that a predetermined antenna gain is obtained. By doing so, it is easy to suppress the obstruction of the view through the fixed window glass 140 on the left side.
- the third antenna 13 and the fourth antenna 14 arranged side by side in the vertical direction are arranged so as to intersect with each other, and are arranged side by side in the vertical direction.
- the seventh antenna 17 and the eighth antenna 18 are preferably arranged so as to cross each other. In this way, by being arranged so as to intersect with each other, the outer dimensions of the second antenna set 2 and the fourth antenna set 4 in the horizontal direction can be reduced.
- the third substrate 53 and the fourth substrate 53 arranged side by side in the vertical direction are arranged.
- Substrates 54 are preferably arranged to intersect each other.
- the seventh substrate 57 and the eighth substrate 58 arranged side by side in the vertical direction are It is preferably arranged so as to intersect with each other.
- the antenna gain of each main beam of the antennas 11 to 18 is preferably 4 dBi or more and 11 dBi or less, more preferably 5 dBi or more and 10 dBi or less, and further preferably 6 dBi or more and 9 dBi or less.
- the antenna gain of the main beam is set to 4 dBi or more and 11 dBi or less, the half-value angle of the main beam becomes about 40 ° or more and 90 ° or less. Therefore, by horizontally arranging the antennas 11, 13, 15, 17 for horizontal polarization whose antenna gain is adjusted in such a range, the antenna gain is improved and the directivity is widened in horizontal polarization. Can achieve both.
- the antennas 12, 14, 16 and 18 for vertically polarized waves whose antenna gains are adjusted in such a range at four locations, the antenna gain is improved and the wide angle of directivity is increased in vertically polarized waves. Can be achieved at the same time.
- the mutual distance between the horizontally polarized antennas 11, 13, 15, 17 is preferably 10 ⁇ or more, more preferably 15 ⁇ or more, and further preferably 20 ⁇ . That is all.
- the mutual distance between the vertically polarized antennas 12, 14, 16, and 18 is preferably 10 ⁇ or more, more preferably 15 ⁇ or more, and further preferably 20 ⁇ or more.
- the upper limit of the mutual distance varies depending on the size of the vehicle in which each antenna is mounted.
- the mutual distance between the antennas for the same polarization is 10 ⁇ or more, the correlation coefficient between the antennas is significantly reduced compared to the case where the distance is less than 10 ⁇ . Therefore, each antenna is MIMO (Multiple Input Multiple Output). ) Suitable for use as an antenna. For example, in the case of a radio wave having a frequency of 28 GHz, 10 ⁇ is about 100 mm.
- FIG. 5 is a diagram showing an example of an antenna set having a horizontal polarization antenna 30 and a vertical polarization antenna 40 arranged side by side in the horizontal direction.
- the antenna set shown in FIG. 5 is an example of the above-described first antenna set 1 and third antenna set 3, for example.
- the horizontally polarized antenna 30 corresponds to the first antenna 11
- the vertically polarized antenna 40 corresponds to the second antenna 12.
- the horizontally polarized antenna 30 corresponds to the fifth antenna
- the vertically polarized antenna 40 corresponds to the sixth antenna 16.
- Horizontally polarized antenna 30 is a planar antenna having a dielectric substrate 36 on which antenna conductors 31 and 32 are formed.
- the dielectric substrate 36 has a first substrate surface and a second substrate surface opposite to the first substrate surface.
- the horizontal polarization antenna 30 is a microstrip antenna (patch antenna)
- the antenna conductors 31 and 32 and the strip conductor 33 formed on the first substrate surface are opposed to each other via the dielectric substrate 36 (
- a ground conductor (not shown) is formed on the second substrate surface.
- the strip conductor 33 is a feed line whose tip portion is connected in parallel to the patch-shaped antenna conductors 31, 31.
- the inner conductor 34a of the coaxial cable 34 is conductively connected to the strip conductor 33, and the outer conductor of the coaxial cable 34 is conductively connected to a ground conductor formed on the second substrate surface.
- the opposite side (not shown) of the coaxial cable 34 is connected to a vehicle-mounted communication device.
- the vertically polarized antenna 40 is a planar antenna having a dielectric substrate 46 on which antenna conductors 41 and 42 are formed.
- Dielectric substrate 46 has a first substrate surface and a second substrate surface opposite to the first substrate surface.
- the vertically polarized antenna 40 is a microstrip antenna (patch antenna)
- the antenna conductors 41 and 42 and the strip conductor 43 formed on the first substrate surface are opposed to each other via the dielectric substrate 46 (
- a ground conductor (not shown) is formed on the second substrate surface.
- the strip conductor 43 is a feed line whose tip is connected in series to the patch-shaped antenna conductors 41, 41.
- the inner conductor 44a of the coaxial cable 44 is conductively connected to the strip conductor 43, and the outer conductor of the coaxial cable 44 is conductively connected to a ground conductor formed on the second substrate surface.
- the opposite side (not shown) of the coaxial cable 44 is connected to a vehicle-mounted communication device.
- the antenna set shown in FIG. 5 may have a hinge mechanism in which the dielectric substrates 36 and 46 rotate about the rotation axis 21. By rotating the dielectric substrates 36 and 46 about the rotation axis 21, a normal direction 35 of the dielectric substrate 36 and a normal direction 45 of the dielectric substrate 46 are obtained so that desired antenna gain and directivity can be obtained. You can adjust the angle between and.
- the substrate surface of the dielectric substrate 36, the antenna surfaces of the antenna conductors 31 and 32, the substrate surface of the dielectric substrate 46, and the antenna surfaces of the antenna conductors 41 and 42 are arranged in the Z-axis direction. It is shown to be parallel. However, as described above, the antenna set of FIG. 5 is installed in the vehicle 100 so that the main beam has an elevation angle ⁇ or an elevation angle ⁇ in a predetermined range by forming an inclination of a predetermined angle with respect to the Z-axis direction. You may.
- FIG. 6 is a diagram showing an example of an antenna set having a horizontal polarization antenna 30 and a vertical polarization antenna 40 arranged side by side in the vertical direction.
- the antenna set shown in FIG. 6 is an example of the above-described second antenna set 2 and fourth antenna set 4, for example.
- the horizontally polarized antenna 30 corresponds to the third antenna 13
- the vertically polarized antenna 40 corresponds to the fourth antenna 14.
- the horizontally polarized antenna 30 corresponds to the seventh antenna 17, and the vertically polarized antenna 40 corresponds to the eighth antenna 18.
- the configurations of the horizontal polarization antenna 30 and the vertical polarization antenna 40 shown in FIG. 6 are the same as those described above.
- the antenna set shown in FIG. 6 may have a mechanism in which the dielectric substrates 36 and 46 rotate about the rotation axis 22. By rotating the dielectric substrates 36 and 46 about the rotation axis 22, a normal direction 35 of the dielectric substrate 36 and a normal direction 45 of the dielectric substrate 46 are obtained so that desired antenna gain and directivity can be obtained. You can adjust the angle between and.
- the substrate surface of the dielectric substrate 36, the antenna surfaces of the antenna conductors 31 and 32, the substrate surface of the dielectric substrate 46, and the antenna surfaces of the antenna conductors 41 and 42 are arranged in the Z-axis direction. It is shown to be parallel. However, as described above, the antenna set of FIG. 6 is also installed in the vehicle 100 so that the main beam has an elevation angle ⁇ or an elevation angle ⁇ in a predetermined range by inclining the antenna set at a predetermined angle with respect to the Z-axis direction. You may.
- the vertically polarized antenna or the horizontally polarized antenna is not limited to the microstrip antenna, and other types of antennas may be used.
- it may be a planar antenna fed by a coplanar line.
- FIG. 7 is a diagram showing an example of directivity of the antennas 12, 14, 16, 18 which are a plurality of vertically polarized antennas.
- WSVANT”, “RQLVANT”, “BLVANT”, and “RQRVANT” shown in FIG. 7 indicate examples of antenna gain measurement results of the antennas 12, 14, 16, and 18, respectively.
- FIG. 8 is a diagram showing an example of directivity of the antennas 11, 13, 15, and 17, which are a plurality of horizontally polarized antennas.
- “WSHANT”, “RQLHANT”, “BLHHANT”, and “RQRHANT” shown in FIG. 8 indicate examples of the antenna gain measurement results of the antennas 11, 13, 15, and 17, respectively.
- FIG. 9 is a diagram showing the directivity of FIG. 7 and the directivity of FIG. 8 together.
- the directivity of the antenna system 101 can be made close to omnidirectional. As described above, it is possible to realize the antenna system 101 which can achieve both the improvement of the antenna gain and the widening of the directivity and has a small polarization dependence.
- the antenna gain was measured by setting the center of the turntable to the center of the vehicle with each antenna attached as shown in Figs. Then, in each of the vertically polarized wave and the horizontally polarized wave transmitted from the transmitting antenna fixed to the outside of the turntable, the azimuth angle in the horizontal plane with the antenna is changed and the vertical polarization is changed with the elevation angle with the antenna fixed. The antenna gain for waves and horizontal polarization was measured.
- the angle ⁇ 12 (corresponding to the angle ⁇ 12 ), the angle ⁇ 34 (corresponding to the angle ⁇ 34 ), the angle ⁇ 56 (corresponding to the angle ⁇ 56 ) and the angle ⁇ 78 (angle ⁇ ) formed by the two dielectric substrates (Corresponding to 78 ) were set to 135 °, respectively. Further, each dielectric substrate of each antenna set was tilted by 10 ° with respect to the Z-axis direction, and installed so that the elevation angle ⁇ and the elevation angle ⁇ were 10 °. The fixed transmitting antenna was arranged so that the elevation angle ⁇ was on the extension line of 10 °.
- FIGS. 7 to 9 show the antenna gains in the range of the azimuth angle ⁇ r of 0 ° to 360 °, the antenna gains at the respective azimuth angles ⁇ r are the antenna gains when the elevation angle ⁇ is 10 °. It is the figure which showed in plan.
- the type of vehicle 100 shown in FIGS. 1 and 2 is a two-door type, but the present invention is also applicable to other vehicle types such as sedans, hatchbacks, vans, buses, and trucks.
- the four antenna sets may be provided on or near the dielectrics on the front and rear sides of the vehicle. More specifically, among the four antenna sets, one or more antenna sets are provided near the windshield 110 on the front side of the vehicle, and the remaining one or more antenna sets are on the rear side of the vehicle. It may be provided near the rear glass 130.
- the two antenna sets provided near the windshield 110 on the front side of the vehicle one is installed near the upper left portion of the windshield 110 and closer to the inside of the vehicle compartment, and the other is set at the upper right portion of the windshield 110. It may be installed near the passenger compartment.
- the two antenna sets provided near the rear glass 130 on the rear side of the vehicle one is installed near the upper right portion of the rear glass 130 inside the vehicle compartment, and the other is set in the upper left vehicle compartment of the rear glass 130. It may be installed near the inside.
- one antenna set is installed near the inside of the vehicle in the upper center of the windshield 110, and the remaining three antenna sets are provided in the upper right, upper center, and upper left compartments of the rear glass 130, respectively. It may be installed near the inside.
- the four antenna sets may be provided on the dielectric on each of the left and right sides of the vehicle or in the vicinity thereof. More specifically, among the four antenna sets, one or more antenna sets are provided in the vicinity of the window glass on the right side of the vehicle, and the remaining one or more antenna sets are installed on the window on the left side of the vehicle. It may be provided near the glass.
- two antenna sets are provided in each of the right front part and the right rear part, and the remaining two antenna sets are provided in each of the left front part and the left rear part. Good.
- two antenna sets are installed near the upper left portion and upper right portion of the windshield 110 near the inside of the vehicle compartment, and the remaining two antenna sets are provided on the right fixed window glass 120 and the left side, respectively. It may be installed on the fixed window glass 140 near the inside of the vehicle.
- the dielectric on the right side of the vehicle is not limited to the fixed window glass 120 on the right side, but may be the right door glass 150 provided on the right door or the fixed window glass on the right side in front of the right door glass 150.
- the window glass in can be used.
- the dielectric on the left side of the vehicle is not limited to the fixed window glass 140 on the left side, such as the left door glass 160 provided on the left door or the fixed window glass on the left side in front of the left door glass 160. It may be the window glass on the left side.
- the number of antenna sets is not limited to four and may be five or more. Further, the number of antennas included in one antenna set is not limited to two and may be three or more.
- the antenna set is not limited to being provided in the vicinity of a dielectric such as a window glass, and may be directly attached by being attached to the dielectric or embedded.
- the dielectric is not limited to the window glass, but may be glass bonded to the pillar, or another dielectric such as resin, for example, a resin member such as an instrument panel or a lining in the vehicle interior.
- FIG. 10 is a diagram showing from above an example of a vehicle equipped with a vehicle antenna system of another embodiment according to the present disclosure.
- FIG. 10 exemplifies a plurality of antenna sets provided in the vicinity of window glass on both front and rear sides and left and right sides of the vehicle 100. Note that in the description of the antenna system 201, the description of the antenna system 101 is cited for the same configuration as the antenna system 101.
- the vehicle antenna system 201 has the first to fourth antenna sets 1 to 4 similarly to the vehicle antenna system 101, but two types (that is, for horizontal polarization) that configure each antenna set. And (for vertically polarized waves) are arranged so that the directions of the main beams of the antennas are the same. That is, the first antenna 11 and the second antenna 12, which compose the first antenna set 1, are provided on a substrate on the same plane or a plane parallel to each other. Similarly, the third antenna 13 and the fourth antenna 14, which form the second antenna set 2, are provided on the substrates on the same plane or planes parallel to each other, and form the third antenna set 3.
- the fifth antenna 6 and the sixth antenna 16 are provided on a substrate on the same plane or a plane parallel to each other, and further, the seventh antenna 17 and the eighth antenna 18 constituting the fourth antenna set 4 are The substrates are provided on the same plane or planes parallel to each other.
- the horizontal polarization main beam and the vertical polarization are respectively provided at four positions of the vehicle 100 in the front direction, the right direction, the rear direction, and the left direction.
- the two main beams of waves are in the same direction.
- Such an antenna system 201 is suitable for a system that transmits and receives both vertically polarized waves and horizontally polarized waves well.
- the half-value angle centered on each main beam is preferably 60 ° or more and 120 ° or less in order to widen the directivity, depending on the arrangement of each antenna set.
- the half-value angle centered on the main beam tends to lower the reception sensitivity when it is widened, so it is preferable to set it according to a predetermined specification.
- FIG. 11 is a diagram showing from above an example of a vehicle equipped with a vehicle antenna system of another embodiment according to the present disclosure.
- FIG. 11 shows the vicinity of window glass on the side where the azimuth angle is ⁇ 45 ° with respect to the front of the vehicle 100 and the side where the azimuth angle is ⁇ 45 ° with respect to the rear of the vehicle 100.
- the plurality of antenna sets provided in FIG. Note that in the description of the antenna system 301, the description of the antenna system 201 is cited for the same configuration as the antenna system 201.
- the vehicle antenna system 301 has first to fourth antenna sets 1 to 4, and two types (that is, for horizontal polarization, which configure each antenna set). It is arranged so that the directions of the main beams of the antenna (for vertically polarized waves) are the same. In this case as well, although depending on the arrangement of each antenna set, the half-value angle around each main beam is preferably 60 ° or more and 120 ° or less in order to widen the directivity.
- the first antenna set 1 is provided in or near the dielectric in the azimuth angle + 45 ° with respect to the front of the vehicle 100.
- the first antenna set 1 is provided on the right side of the windshield 110, but the fixed window glass on the right side in front of or in the vicinity of the right door glass 150 or in front of the right door glass 150. Alternatively, it may be provided in the vicinity thereof.
- the second antenna set 2 is provided at or near the dielectric in the azimuth + 45 ° direction with respect to the rear of the vehicle 100.
- the second antenna set 2 is provided on the right side of the rear glass 130 in FIG. 11, the second fixed antenna 120 on the right side of the rear door glass 150 or in the vicinity thereof, or on the right side fixed window glass 120 behind the right door glass 150 or It may be provided in the vicinity thereof.
- the third antenna set 3 is provided at or near the dielectric in the azimuth direction of ⁇ 45 ° with respect to the rear of the vehicle 100.
- the third antenna set 3 is provided on the left side of the rear glass 130, but the third fixed antenna 140 is provided on the left side of the rear glass 130 or in the vicinity thereof, or on the left side fixed window glass 140 behind the left door glass 160 or It may be provided in the vicinity thereof.
- the fourth antenna set 4 is provided at or near the dielectric in the azimuth direction of ⁇ 45 ° with respect to the front of the vehicle 100.
- the fourth antenna set 4 is provided on the left side of the windshield 110 in FIG. 11, the left fixed window glass that is located in front of or near the left door glass 160 or in front of the left door glass 160. Alternatively, it may be provided in the vicinity thereof.
- each antenna set has the same main beam direction of the horizontal polarization antenna and the main beam direction of the vertical polarization antenna as in the vehicle antenna systems 201 and 301, the shape of the vehicle Alternatively, more than four may be arranged according to desired reception sensitivity.
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Support Of Aerials (AREA)
Abstract
Description
車両の前後両側と左右両側のうち少なくとも一方の両側にある誘電体又はその近傍に設けられる複数のアンテナセットを備え、
前記複数のアンテナセットに含まれる第1のアンテナセットは、第1のアンテナと第2のアンテナを有し、
前記複数のアンテナセットに含まれる第2のアンテナセットは、第3のアンテナと第4のアンテナを有し、
前記複数のアンテナセットに含まれる第3のアンテナセットは、第5のアンテナと第6のアンテナを有し、
前記複数のアンテナセットに含まれる第4のアンテナセットは、第7のアンテナと第8のアンテナを有し、
前記第1のアンテナと前記第3のアンテナと前記第5のアンテナと前記第7のアンテナはそれぞれ、垂直偏波を送受する場合に比べて水平偏波を送受する場合の方が、アンテナ利得が高い水平偏波アンテナであり、
前記第2のアンテナと前記第4のアンテナと前記第6のアンテナと前記第8のアンテナはそれぞれ、水平偏波を送受する場合に比べて垂直偏波を送受する場合の方が、アンテナ利得が高い垂直偏波アンテナである、車両用アンテナシステムを提供する。
2 第2のアンテナセット
3 第3のアンテナセット
4 第4のアンテナセット
11 第1のアンテナ
12 第2のアンテナ
13 第3のアンテナ
14 第4のアンテナ
15 第5のアンテナ
16 第6のアンテナ
17 第7のアンテナ
18 第8のアンテナ
21,22 回転軸
30 水平偏波アンテナ
31,32 アンテナ導体
33 ストリップ導体
34 同軸ケーブル
35 法線方向
36 誘電体基板
40 垂直偏波アンテナ
41,42 アンテナ導体
43 ストリップ導体
44 同軸ケーブル
45 法線方向
46 誘電体基板
51 第1の基板
52 第2の基板
53 第3の基板
54 第4の基板
55 第5の基板
56 第6の基板
57 第7の基板
58 第8の基板
90 水平面
100 車両
101,201,301 車両用アンテナシステム
110 フロントガラス
120 右側の固定窓ガラス
130 リアガラス
140 左側の固定窓ガラス
150 右ドアガラス
160 左ドアガラス
Claims (25)
- 車両の前後両側と左右両側のうち少なくとも一方の両側にある誘電体又はその近傍に設けられる複数のアンテナセットを備え、
前記複数のアンテナセットに含まれる第1のアンテナセットは、第1のアンテナと第2のアンテナを有し、
前記複数のアンテナセットに含まれる第2のアンテナセットは、第3のアンテナと第4のアンテナを有し、
前記複数のアンテナセットに含まれる第3のアンテナセットは、第5のアンテナと第6のアンテナを有し、
前記複数のアンテナセットに含まれる第4のアンテナセットは、第7のアンテナと第8のアンテナを有し、
前記第1のアンテナと前記第3のアンテナと前記第5のアンテナと前記第7のアンテナはそれぞれ、垂直偏波を送受する場合に比べて水平偏波を送受する場合の方が、アンテナ利得が高い水平偏波アンテナであり、
前記第2のアンテナと前記第4のアンテナと前記第6のアンテナと前記第8のアンテナはそれぞれ、水平偏波を送受する場合に比べて垂直偏波を送受する場合の方が、アンテナ利得が高い垂直偏波アンテナである、車両用アンテナシステム。 - 前記第1のアンテナは第1の基板に備えられ、前記第2のアンテナは第2の基板に備えられ、前記第1の基板の基板面と前記第2の基板の基板面とは法線方向が異なり、
前記第3のアンテナは第3の基板に備えられ、前記第4のアンテナは第4の基板に備えられ、前記第3の基板の基板面と前記第4の基板の基板面とは法線方向が異なり、
前記第5のアンテナは第5の基板に備えられ、前記第6のアンテナは第6の基板に備えられ、前記第5の基板の基板面と前記第6の基板の基板面とは法線方向が異なり、
前記第7のアンテナは第7の基板に備えられ、前記第8のアンテナは第8の基板に備えられ、前記第7の基板の基板面と前記第8の基板の基板面とは法線方向が異なる、請求項1に記載の車両用アンテナシステム。 - 前記第1の基板の基板面と前記第2の基板の基板面とがなす角度は、90°以上180°未満であり、
前記第3の基板の基板面と前記第4の基板の基板面とがなす角度は、90°以上180°未満であり、
前記第5の基板の基板面と前記第6の基板の基板面とがなす角度は、90°以上180°未満であり、
前記第7の基板の基板面と前記第8の基板の基板面とがなす角度は、90°以上180°未満である、請求項2に記載の車両用アンテナシステム。 - 前記第1の基板、前記第2の基板、前記第3の基板、前記第4の基板、前記第5の基板、前記第6の基板、前記第7の基板および前記第8の基板は、各々の基板面の法線方向が全て異なるように配置される、請求項2又は3に記載の車両用アンテナシステム。
- 前記第1の基板、前記第2の基板、前記第3の基板、前記第4の基板、前記第5の基板、前記第6の基板、前記第7の基板及び前記第8の基板は、各々の基板面の法線方向の仰角が0°以上60°以下となるように配置される、請求項2から4のいずれか一項に記載の車両用アンテナシステム。
- 前記第1のアンテナセットは、前記車両の前側にある誘電体又はその近傍に設けられ、前記第1の基板及び前記第2の基板は、前記車両の前方領域に面するように、水平方向に並んで配置され、
前記第3のアンテナセットは、前記車両の後側にある誘電体又はその近傍に設けられ、前記第5の基板及び前記第6の基板は、前記車両の後方領域に面するように、水平方向に並んで配置される、請求項2から5のいずれか一項に記載の車両用アンテナシステム。 - 前記第2のアンテナセットは、前記車両の右側にある誘電体又はその近傍に設けられ、前記第3の基板及び前記第4の基板は、前記車両の右方領域に面するように、水平面に垂直な方向に並んで配置され、
前記第4のアンテナセットは、前記車両の左側にある誘電体又はその近傍に設けられ、前記第7の基板及び前記第8の基板は、前記車両の左方領域に面するように、水平面に垂直な方向に並んで配置される、請求項2から6のいずれか一項に記載の車両用アンテナシステム。 - 前記車両を上方から見たとき、前記第3の基板及び前記第4の基板は、相互に交差するように配置され、前記第7の基板及び前記第8の基板は、相互に交差するように配置される、請求項7に記載の車両用アンテナシステム。
- 前記第1のアンテナと前記第2のアンテナは、各々の主ビームの方向が異なるように配置され、
前記第3のアンテナと前記第4のアンテナは、各々の主ビームの方向が異なるように配置され、
前記第5のアンテナと前記第6のアンテナは、各々の主ビームの方向が異なるように配置され、
前記第7のアンテナと前記第8のアンテナは、各々の主ビームの方向が異なるように配置される、請求項1に記載の車両用アンテナシステム。 - 前記第1のアンテナの主ビームの方向と前記第2のアンテナの主ビームの方向とがなす角度は、90°以上180°未満であり、
前記第3のアンテナの主ビームの方向と前記第4のアンテナの主ビームの方向とがなす角度は、90°以上180°未満であり、
前記第5のアンテナの主ビームの方向と前記第6のアンテナの主ビームの方向とがなす角度は、90°以上180°未満であり、
前記第7のアンテナの主ビームの方向と前記第8のアンテナの主ビームの方向とがなす角度は、90°以上180°未満である、請求項9に記載の車両用アンテナシステム。 - 前記第1のアンテナ、前記第2のアンテナ、前記第3のアンテナ、前記第4のアンテナ、前記第5のアンテナ、前記第6のアンテナ、前記第7のアンテナ及び前記第8のアンテナは、各々の主ビームの方向が全て異なるように配置される、請求項9又は10に記載の車両用アンテナシステム。
- 前記第1のアンテナ、前記第2のアンテナ、前記第3のアンテナ、前記第4のアンテナ、前記第5のアンテナ、前記第6のアンテナ、前記第7のアンテナ及び前記第8のアンテナは、各々の主ビームの方向の仰角が0°以上60°以下となるように配置される、請求項9から11のいずれか一項に記載の車両用アンテナシステム。
- 前記第1のアンテナセットは、前記車両の前側にある誘電体又はその近傍に設けられ、前記第1のアンテナ及び前記第2のアンテナは、各々の主ビームの方向が前記車両の前方領域に向くように、水平方向に並んで配置され、
前記第3のアンテナセットは、前記車両の後側にある誘電体又はその近傍に設けられ、前記第5のアンテナ及び前記第6のアンテナは、各々の主ビームの方向が前記車両の後方領域に向くように、水平方向に並んで配置される、請求項9から12のいずれか一項に記載の車両用アンテナシステム。 - 前記第2のアンテナセットは、前記車両の右側にある誘電体又はその近傍に設けられ、前記第3のアンテナ及び前記第4のアンテナは、各々の主ビームの方向が前記車両の右方領域に向くように、水平面に垂直な方向に並んで配置され、
前記第4のアンテナセットは、前記車両の左側にある誘電体又はその近傍に設けられ、前記第7のアンテナ及び前記第8のアンテナは、各々の主ビームの方向が前記車両の左方領域に向くように、水平面に垂直な方向に並んで配置される、請求項9から13のいずれか一項に記載の車両用アンテナシステム。 - 前記車両を上方から見たとき、前記第3のアンテナ及び前記第4のアンテナは、相互に交差するように配置され、前記第7のアンテナ及び前記第8のアンテナは、相互に交差するように配置される、請求項14に記載の車両用アンテナシステム。
- 前記水平偏波アンテナの主ビームの方向と前記垂直偏波アンテナの主ビームの方向とが前記車両を上方から見たときに時計回りで交互に存在するように、前記第1のアンテナ、前記第2のアンテナ、前記第3のアンテナ、前記第4のアンテナ、前記第5のアンテナ、前記第6のアンテナ、前記第7のアンテナ及び前記第8のアンテナは、配置される、請求項1から15のいずれか一項に記載の車両用アンテナシステム。
- 前記第1のアンテナ、前記第2のアンテナ、前記第3のアンテナ、前記第4のアンテナ、前記第5のアンテナ、前記第6のアンテナ、前記第7のアンテナ及び前記第8のアンテナは、各々の主ビームのアンテナ利得が4dBi以上11dBi以下である、請求項1から16のいずれか一項に記載の車両用アンテナシステム。
- 前記第1のアンテナ、前記第2のアンテナ、前記第3のアンテナ、前記第4のアンテナ、前記第5のアンテナ、前記第6のアンテナ、前記第7のアンテナ及び前記第8のアンテナは、各々の主ビームを中心とする半値角が40°以上90°以下となるように配置される、請求項17に記載の車両用アンテナシステム。
- 前記第1のアンテナは第1の基板に備えられ、前記第2のアンテナは第2の基板に備えられ、前記第1の基板の基板面と前記第2の基板の基板面とは法線方向が同一であり、
前記第3のアンテナは第3の基板に備えられ、前記第4のアンテナは第4の基板に備えられ、前記第3の基板の基板面と前記第4の基板の基板面とは法線方向が同一であり、
前記第5のアンテナは第5の基板に備えられ、前記第6のアンテナは第6の基板に備えられ、前記第5の基板の基板面と前記第6の基板の基板面とは法線方向が同一であり、
前記第7のアンテナは第7の基板に備えられ、前記第8のアンテナは第8の基板に備えられ、前記第7の基板の基板面と前記第8の基板の基板面とは法線方向が同一である、請求項1に記載の車両用アンテナシステム。 - 前記第1のアンテナセットは、前記車両の前側にある誘電体又はその近傍に設けられ、
前記第2のアンテナセットは、前記車両の右側にある誘電体又はその近傍に設けられ、
前記第3のアンテナセットは、前記車両の後側にある誘電体又はその近傍に設けられ、
前記第4のアンテナセットは、前記車両の左側にある誘電体又はその近傍に設けられる、請求項1から19のいずれか一項に記載の車両用アンテナシステム。 - 前記第1のアンテナセットは、前記車両の前方に対して方位角+45°方向にある誘電体又はその近傍に設けられ、
前記第2のアンテナセットは、前記車両の後方に対して方位角+45°方向にある誘電体又はその近傍に設けられ、
前記第3のアンテナセットは、前記車両の後方に対して方位角-45°方向にある誘電体又はその近傍に設けられ、
前記第4のアンテナセットは、前記車両の前方に対して方位角-45°方向にある誘電体又はその近傍に設けられる、請求項19に記載の車両用アンテナシステム。 - 送受する電波の波長をλとすると、
前記第1のアンテナと前記第3のアンテナと前記第5のアンテナと前記第7のアンテナとの相互間距離は、10λ以上であり、
前記第2のアンテナと前記第4のアンテナと前記第6のアンテナと前記第8のアンテナとの相互間距離は、10λ以上である、請求項1から21のいずれか一項に記載の車両用アンテナシステム。 - 前記誘電体は、ガラス又は樹脂である、請求項1から22のいずれか一項に記載の車両用アンテナシステム。
- 前記車両の前側にある誘電体及び前記車両の後側にある誘電体は、ガラスである、請求項6,13,20のいずれか一項に記載の車両用アンテナシステム。
- 前記第1のアンテナセット、前記第2のアンテナセット、前記第3のアンテナセット及び前記第4のアンテナセットは、3GHz以上100GHz以下の周波数の電波を送受する、請求項1から24のいずれか一項に記載の車両用アンテナシステム。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020553878A JP7308861B2 (ja) | 2018-10-31 | 2019-10-28 | 車両用アンテナシステム |
| DE112019005416.3T DE112019005416B4 (de) | 2018-10-31 | 2019-10-28 | Antennensystem für ein Fahrzeug |
| CN201980067834.5A CN112868136B (zh) | 2018-10-31 | 2019-10-28 | 车辆用天线系统 |
| US17/239,229 US11804649B2 (en) | 2018-10-31 | 2021-04-23 | Antenna system for vehicle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-206013 | 2018-10-31 | ||
| JP2018206013 | 2018-10-31 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/239,229 Continuation US11804649B2 (en) | 2018-10-31 | 2021-04-23 | Antenna system for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020090718A1 true WO2020090718A1 (ja) | 2020-05-07 |
Family
ID=70463684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/042136 Ceased WO2020090718A1 (ja) | 2018-10-31 | 2019-10-28 | 車両用アンテナシステム |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11804649B2 (ja) |
| JP (1) | JP7308861B2 (ja) |
| CN (1) | CN112868136B (ja) |
| DE (1) | DE112019005416B4 (ja) |
| WO (1) | WO2020090718A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022168843A1 (ja) * | 2021-02-05 | 2022-08-11 | Agc株式会社 | 車両用アンテナシステム |
| JPWO2024029098A1 (ja) * | 2022-08-01 | 2024-02-08 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE1950326A1 (en) * | 2019-03-15 | 2020-07-14 | Icomera Ab | Wireless communication system for ground based vehicles |
| JP7643450B2 (ja) * | 2020-03-24 | 2025-03-11 | Agc株式会社 | 車両用アンテナシステム |
| US11448722B2 (en) * | 2020-03-26 | 2022-09-20 | Intel Corporation | Apparatus, system and method of communicating radar signals |
| JPWO2022210699A1 (ja) * | 2021-03-29 | 2022-10-06 | ||
| DE112022004607T5 (de) | 2021-09-29 | 2024-07-11 | AGC Inc. | Fahrzeugantennengerät |
| EP4250481A1 (en) | 2022-03-24 | 2023-09-27 | Volvo Truck Corporation | Antenna arrangements for heavy-duty vehicles |
| GB202209353D0 (en) * | 2022-06-27 | 2022-08-10 | Secr Defence | Omnidirectional vehicle antenna apparatus |
| WO2025225747A1 (ko) * | 2024-04-22 | 2025-10-30 | 엘지전자 주식회사 | 차량용 안테나 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000036780A (ja) * | 1998-07-17 | 2000-02-02 | Toyota Motor Corp | 移動体用ダイバーシチアンテナ装置 |
| JP2000236205A (ja) * | 1999-02-15 | 2000-08-29 | Nippon Sheet Glass Co Ltd | 衛星通信アンテナ |
| JP2013085058A (ja) * | 2011-10-07 | 2013-05-09 | Yupiteru Corp | 電子機器、及び電波受信モジュール |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6351237B1 (en) * | 1995-06-08 | 2002-02-26 | Metawave Communications Corporation | Polarization and angular diversity among antenna beams |
| JP4064978B2 (ja) * | 2004-05-28 | 2008-03-19 | 株式会社デンソー | 車載アンテナの搭載構造 |
| WO2016125876A1 (ja) | 2015-02-05 | 2016-08-11 | 株式会社フジクラ | 車載用アンテナ装置 |
| EP3176871B1 (en) | 2015-02-05 | 2019-05-01 | Fujikura Ltd. | Vehicle-mounted antenna device |
| CN107492711A (zh) | 2016-06-10 | 2017-12-19 | 株式会社友华 | 车载用天线装置 |
| JP6661494B2 (ja) | 2016-08-30 | 2020-03-11 | 株式会社デンソーテン | アンテナ装置 |
| JP6825994B2 (ja) | 2017-06-02 | 2021-02-03 | ニッタン株式会社 | 防火システム、制御装置及び制御方法 |
-
2019
- 2019-10-28 WO PCT/JP2019/042136 patent/WO2020090718A1/ja not_active Ceased
- 2019-10-28 CN CN201980067834.5A patent/CN112868136B/zh active Active
- 2019-10-28 DE DE112019005416.3T patent/DE112019005416B4/de active Active
- 2019-10-28 JP JP2020553878A patent/JP7308861B2/ja active Active
-
2021
- 2021-04-23 US US17/239,229 patent/US11804649B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000036780A (ja) * | 1998-07-17 | 2000-02-02 | Toyota Motor Corp | 移動体用ダイバーシチアンテナ装置 |
| JP2000236205A (ja) * | 1999-02-15 | 2000-08-29 | Nippon Sheet Glass Co Ltd | 衛星通信アンテナ |
| JP2013085058A (ja) * | 2011-10-07 | 2013-05-09 | Yupiteru Corp | 電子機器、及び電波受信モジュール |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022168843A1 (ja) * | 2021-02-05 | 2022-08-11 | Agc株式会社 | 車両用アンテナシステム |
| JPWO2022168843A1 (ja) * | 2021-02-05 | 2022-08-11 | ||
| JP7708126B2 (ja) | 2021-02-05 | 2025-07-15 | Agc株式会社 | 車両用アンテナシステム |
| JPWO2024029098A1 (ja) * | 2022-08-01 | 2024-02-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112019005416B4 (de) | 2025-03-20 |
| CN112868136B (zh) | 2024-04-26 |
| US11804649B2 (en) | 2023-10-31 |
| DE112019005416T5 (de) | 2021-07-22 |
| CN112868136A (zh) | 2021-05-28 |
| JP7308861B2 (ja) | 2023-07-14 |
| US20210242578A1 (en) | 2021-08-05 |
| JPWO2020090718A1 (ja) | 2021-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7308861B2 (ja) | 車両用アンテナシステム | |
| KR102725688B1 (ko) | 차량에 배치되는 안테나 모듈 | |
| KR102707822B1 (ko) | 차량에 배치되는 안테나 모듈 | |
| US11502426B2 (en) | Antenna device | |
| KR20220106203A (ko) | 다층 유리 패치 안테나 | |
| JP7298600B2 (ja) | 車両用アンテナ、車両用アンテナ付き窓ガラス及びアンテナシステム | |
| US20250202093A1 (en) | Antenna system for vehicles | |
| EP1434301B1 (en) | Vehicle windowpane antenna apparatus | |
| EP4557514A1 (en) | Antenna module disposed in vehicle | |
| JP4141979B2 (ja) | 自動車用高周波ガラスアンテナ | |
| CN107978844A (zh) | 车辆用天线以及带天线的窗玻璃 | |
| JP3833609B2 (ja) | 車載アンテナ | |
| JP7835227B2 (ja) | 車両用アンテナ装置 | |
| EP2009733A1 (en) | Glass antenna for vehicle | |
| US20230223697A1 (en) | Coplanar antenna structure having a wide slot | |
| US20240322422A1 (en) | Antenna device | |
| JP6971277B2 (ja) | アンテナ、無線通信装置及び移動体 | |
| US20240145924A1 (en) | Antenna and antenna apparatus for vehicle | |
| WO2023100908A1 (ja) | アンテナ装置及び車両用アンテナ装置 | |
| CN120834836A (zh) | 车辆 | |
| JPH02206923A (ja) | 陸上移動通信システム |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19880337 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020553878 Country of ref document: JP Kind code of ref document: A |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19880337 Country of ref document: EP Kind code of ref document: A1 |
|
| WWG | Wipo information: grant in national office |
Ref document number: 112019005416 Country of ref document: DE |