The present disclosure relates to an antenna configuration for a vehicle and more particularly, to an arrangement of blade or fin antennas on a roof of a vehicle which minimizes radio wave interference between the antennas.
Modern vehicles receive and communicate information using radio waves of a variety of different frequencies and bandwidths. Each of these different frequencies and bandwidths may be associated with different systems and functions of the vehicle. For example, a vehicle may receive radio waves associated with audio/visual entertainment functions, navigation functions, command and control functions, vehicle-to-vehicle communication functions, telemetry or data functions, and a variety of other types of communications that may be received or transmitted to and from the vehicle.
In order to receive and/or transmit signals via each of these various frequencies and bandwidths, a vehicle is equipped with multiple antennas configured to facilitate communication over different specific frequencies. The arrangement and placement of these multiple antennas on portions of the vehicle may cause radio wave interference between adjacent antennas, thereby reducing signal quality and clarity.
There is a need in the art for a vehicle antenna configuration that minimizes radio wave interference and that is securely mounted to a roof of a vehicle.
In one aspect, an antenna configuration for a roof of a vehicle is provided. The antenna configuration includes a first set of antennas spaced apart from an edge of the roof of the vehicle by a first distance. The antenna configuration also includes a second set of antennas spaced apart from the edge of the roof of the vehicle by a second distance. The second distance is greater than the first distance.
In another aspect, an antenna configuration for a roof of a vehicle is provided. The antenna configuration includes a first set of antennas mounted to a first structural component of the roof of the vehicle. The antenna configuration also includes a second set of antennas mounted to a second structural component of the roof of the vehicle. The first structural component is closer to a rear end of the vehicle than the second structural component.
In another aspect, a roof of a vehicle is provided. The roof includes an outer panel, a first structural component extending in a lateral direction across the roof, and a second structural component extending in the lateral direction across the roof. The first structural component is closer to a rear edge of the roof than the second structural component. The roof also includes an antenna configuration attached to the roof. The antenna configuration includes a first set of antennas mounted to the first structural component and a second set of antennas mounted to the second structural component. The first set of antennas are spaced apart from the rear edge of the roof by a first distance. The second set of antennas are spaced apart from the edge of the roof by a second distance. The second distance is greater than the first distance.
Other systems, methods, features and advantages of the disclosure will be, or will become, apparent to one of ordinary skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description and this summary, be within the scope of the disclosure, and be protected by the following claims.
The disclosure can be better understood with reference to the following drawings and description. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the disclosure. Moreover, in the figures, like reference numerals designate corresponding parts throughout the different views.
An antenna configuration for a roof of a vehicle is provided that minimizes radio wave interference between adjacent antennas and that is securely mounted to the vehicle roof. In some embodiments, the antenna configuration of the present disclosure may be arranged on a roof of a vehicle in the form of an autonomous ground vehicle. The techniques of the present embodiments may also be applied to antenna configurations arranged on other types of vehicles, such as conventional motor vehicles, electric vehicles, hybrid vehicles, and other types of vehicles configured for air, ground, or water that use multiple antennas for receiving and/or transmitting signals over different radio frequency wavelengths and/or bandwidths.
Referring now to
In an example embodiment, roof 102 includes an outer panel 104 that is configured to cover over one or more structural components of vehicle 100 and roof 102 to provide a substantially continuous exterior surface on the top of vehicle 100. In some embodiments, the individual antennas of antenna configuration 110 are mounted on roof 102 of vehicle 100 so that the antennas are exposed on top of outer panel 104. That is, outer surfaces of the antennas of antenna configuration 110 and the exterior surface of outer panel 104 of roof 102 are exposed to air flowing over the top of vehicle 100 as vehicle 100 is moving.
In the present embodiments, the antennas of antenna configuration 110 are in the form of “shark fin” or blade antennas. These shark fin or blade antennas have a generally three-dimensional triangular shape, with a pointed narrow front edge that widens and rises to a larger rear edge. In some embodiments, the shark fin or blade antennas have sides that slope upwards towards a central ridge that runs in a longitudinal direction from the front edge to the rear edge. The shape and form of the shark fin or blade antenna is configured to provide an aerodynamic configuration that does not disrupt airflow traveling over the exterior surface of the vehicle on which the antennas are mounted (e.g., airflow traveling over outer panel 104 of roof 102 of vehicle 100). In an example embodiment, the shark fin antennas may have approximate dimensions of 160 mm in length, 75 mm in width, and 60 mm in height.
In some embodiments, vehicle 100 has a front end 106 and a rear end 108 arranged on opposite ends along a longitudinal direction of vehicle 100. In an example embodiment, antenna configuration 110 is arranged at or near rear end 108 of vehicle 100. For example, as shown in
Referring now to
Referring now to
In this embodiment, antenna configuration 110 includes a first set 300 of antennas, including a first antenna 302, a second antenna 304, and a third antenna 306. First set 300 of antennas is disposed rearward on roof 102 of vehicle 100 adjacent to second edge 114 of roof 102. In this embodiment, antenna configuration 110 also includes a second set 310 of antennas, including a fourth antenna 312 and a fifth antenna 314. Second set 310 of antennas is disposed forward of first set 300 of antennas on roof 102 of vehicle 100 and is spaced farther from second edge 114 in the longitudinal direction than first set 300 of antennas (e.g., second set 310 of antennas is closer to first edge 112 of roof 102 than first set 300 of antennas).
As described above, the arrangement of each set of antennas (e.g., first set 300 and second set 310) and the arrangement of the individual antennas in each set (e.g., first antenna 302, second antenna 304, and third antenna 306 associated with first set 300 and fourth antenna 312 and fifth antenna 314 associated with second set 310) are selected to minimize radio wave interference between adjacent antennas. As shown in
In some embodiments, first distance D1 and second distance D2 may be in a range of approximately 160 mm to 380 mm. That is, the lateral separation distance between first antenna 302 and second antenna 304 and second antenna 304 and third antenna 306 may be from 160 mm up to 380 mm apart from each other. In one embodiment, first distance D1 and second distance D2 may be approximately 250 mm.
As shown in
In addition to the separation distances between each individual antenna in each set, the antennas of first set 300 and the antennas of second set 310 may also be spaced apart on roof 102 from each other. For example, in this embodiment, the back edges of each antenna in first set 300 (e.g., first antenna 302, second antenna 304, and third antenna 306) are substantially aligned along a first lateral direction 308 extending between first lateral side 116 and second lateral side 118. In one embodiment, these back edges of each antenna in first set 300 are separated from second edge 114 of roof 102 by a fourth distance D4. In this embodiment, fourth distance D4 is oriented approximately in the longitudinal direction of roof 102 extending between opposite front and rear edges 112, 114. In an example embodiment, fourth distance D4 is selected so that the antennas of first set 300 may be mounted to a structural component of roof 102, as described below. In one embodiment, fourth distance D4 is approximately 75 mm. It should be understood that fourth distance D4 may be larger or smaller, for example, depending on the location of the structural component from rear edge 114 of roof 102.
Similarly, the back edges of each antenna in second set 310 (e.g., fourth antenna 312 and fifth antenna 314) are substantially aligned along a second lateral direction 316 extending between first lateral side 116 and second lateral side 118. In an example embodiment, first lateral direction 308 and second lateral direction 316 are parallel to each other. In one embodiment, these back edges of each antenna in second set 310 are separated from second edge 114 of roof 102 by a fifth distance D5. Fifth distance D5 is greater than fourth distance D4 and is oriented approximately in the longitudinal direction of roof 102 extending between opposite front and rear edges 112, 114. That is, the antennas of second set 310 of antennas are located forward of the antennas of first set 300 of antennas (i.e., second set 310 is closer towards first edge 112 of roof than first set 300). In an example embodiment, fifth distance D5 is selected so that the antennas of second set 310 may be mounted to a structural component of roof 102, as described below. In one embodiment, fifth distance D5 is approximately 225 mm. It should be understood that fifth distance D5 may be larger or smaller, for example, depending on the location of the structural component from rear edge 114 of roof 102.
Additionally, as shown in
As described above, the arrangement of first set 300 of antennas and second set 310 of antennas of antenna configuration 110 are configured to minimize or eliminate interference between adjacent antennas. For example, as shown in
As shown in
In this embodiment, roof rail upper member 402 is arranged along second edge 114 of roof 102 at rear end 108 of vehicle 100 and roof bow member 400 is arranged forward of roof rail upper member 402 closer to first edge 112 of roof 102 than roof rail upper member 402 (e.g., in a direction towards front end 106 of vehicle 100). In some embodiments, roof 102 may also include a roof rail lower member (e.g., a roof rail lower member 612 shown in
In some embodiments, the antennas of antenna configuration 110 may be mounted to one or more portions of the structural components of roof 102 to provide a secure attachment to roof 102. In an example embodiment, antenna support brackets may be provided to mount each antenna of antenna configuration 110 to a structural component of roof 102. For example, in one embodiment, the antennas of second set 310 of antenna configuration 110 are each mounted to a portion of roof bow member 400 via antenna support brackets. As shown in
Additionally, the antennas of first set 300 of antenna configuration 110 are each mounted to a portion of roof rail upper member 402 and/or roof rail lower member via antenna support brackets. As shown in
In an embodiment, housing 500 of fifth antenna 314 may have a substantially triangular three dimensional shape resembling a “shark fin” or blade. In this embodiment, the shape of housing 500 of fifth antenna 314 includes a narrow front edge 504 where the lateral sides of housing 500 meet together at a rounded point and a wider rear edge 506 that extends vertically upwards away from the surface of outer panel 104. In this embodiment, front edge 504 is facing towards front end 106 of vehicle 100 and rear edge 506 is facing towards rear end 108 of vehicle 100.
In some embodiments, fifth antenna 314 may be attached or mounted to first antenna support bracket 404 disposed beneath outer panel 104. As described above, in some embodiments, antenna support brackets may be attached to structural components of roof 102 to provide a secure attachment to roof 102. For example, in this embodiment, first antenna support bracket 404 is attached to roof bow member 400. In one embodiment, first antenna support bracket 404 may be attached to an end 512 of roof bow member 400, as shown in
In an example embodiment, fifth antenna 314 may further include an anchor member 508 that extends through aligned holes or apertures in outer panel 104 and first antenna support bracket 404. In one embodiment, anchor member 508 includes a central opening that is configured to receive a fastener 510. When fastener 510 is inserted into the central opening of anchor member 508, anchor member 508 expands to press against the perimeter of the aligned holes or apertures in outer panel 104 and first antenna support bracket 404 and holds fifth antenna 314 securely in place on outer panel 104 of roof 102 of vehicle 100.
As shown in
In an embodiment, housing 600 of second antenna 304 may have a substantially triangular three dimensional shape resembling a “shark fin” or blade. In this embodiment, the shape of housing 600 of second antenna 304 includes a narrow front edge 604 where the lateral sides of housing 600 meet together at a rounded point and a wider rear edge 606 that extends vertically upwards away from the surface of outer panel 104. In this embodiment, front edge 604 is facing towards front end 106 of vehicle 100 and rear edge 606 is facing towards rear end 108 of vehicle 100.
In some embodiments, second antenna 304 may be attached or mounted to fourth antenna support bracket 410 disposed beneath outer panel 104. As described above, in some embodiments, antenna support brackets may be attached to structural components of roof 102 to provide a secure attachment to roof 102. For example, in this embodiment, fourth antenna support bracket 410 is attached to roof rail upper member 402 and/or a roof rail lower member 612. As shown in
In one embodiment, fourth antenna support bracket 410 may be attached to an end 614 of roof rail lower member 612 and/or an end 616 of roof rail upper member 402, as shown in
In an example embodiment, second antenna 304 may further include an anchor member 608 that extends through aligned holes or apertures in outer panel 104 and fourth antenna support bracket 410. In one embodiment, anchor member 608 includes a central opening that is configured to receive a fastener 610. When fastener 610 is inserted into the central opening of anchor member 608, anchor member 608 expands to press against the perimeter of the aligned holes or apertures in outer panel 104 and fourth antenna support bracket 410 and holds second antenna 304 securely in place on outer panel 104 of roof 102 of vehicle 100.
The techniques described herein with reference to the example embodiments provide an antenna configuration for a roof of a vehicle that minimizes radio wave interference between adjacent antennas and that is securely mounted to the roof of the vehicle.
While various embodiments of the disclosure have been described, the description is intended to be exemplary, rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible that are within the scope of the disclosure. Accordingly, the disclosure is not to be restricted except in light of the attached claims and their equivalents. Also, various modifications and changes may be made within the scope of the attached claims.
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