Vehicle antenna
Embodiments of the present invention provide an aerodynamic device for a vehicle, comprising one or more antenna elements arranged to extend from a surface of the aerodynamic device.
1. An aerodynamic device for a vehicle, the aerodynamic device comprising:
first and second radomes, the first radome comprising a first antenna element and the second radome comprising a second antenna element, the first and second antenna elements extending from a surface of the aerodynamic device, wherein both of the first and second antenna elements are generally aligned with a first axis, and wherein the first and second antenna elements are spaced apart along a second axis perpendicular to the first axis; and
a conductive layer oriented generally perpendicular to the first and second antenna elements, wherein the first and second antenna elements extend upwardly from the conductive layer and the conductive layer provides a common ground plane for the first and second antenna elements.
2. The aerodynamic device of claim 1 , wherein the first and second antenna elements are configured to transmit and/or receive signals at wavelengths between 0.42 m and 0.05 m.
3. The aerodynamic device of claim 1 , wherein the first axis is a longitudinal axis of the vehicle and the second axis is a lateral axis of the vehicle.
4. The aerodynamic device of claim 1 , wherein the first and second antenna elements are patch antennas.
5. The aerodynamic device of claim 4 , wherein each patch antenna has a polygonal shape.
6. The aerodynamic device of claim 1 , wherein the first and second antenna elements are spaced apart such that the first and second antennas are decorrelated.
7. The aerodynamic device of claim 6 , wherein the first and second antenna elements are spaced apart by at least one quarter of a wavelength.
8. The aerodynamic device of claim 1 , wherein the first and second antenna elements are spaced apart along the second axis by at least 50 mm, and wherein the first and second antenna elements are spaced apart along the second axis by less than 200 mm.
9. The aerodynamic device of claim 1 , wherein the first and second antenna elements are spaced apart along the second axis by at least 100 mm.
10. The aerodynamic device of claim 9 , wherein the first and second antenna elements are spaced apart along the second axis by 101 mm.
11. The aerodynamic device of claim 1 , further comprising at least two additional antenna elements, and/or wherein each of the first and second antenna elements comprises a pair of antenna elements.
12. The aerodynamic device of claim 1 , wherein one or more of the first and second antenna elements extend from an upper surface of the aerodynamic device.
13. The aerodynamic device of claim 1 , wherein the conductive layer is positioned within the aerodynamic device.
14. The aerodynamic device of claim 1 , wherein the conductive layer is positioned beneath a surface of the aerodynamic device.
15. The aerodynamic device of claim 1 , wherein an upper portion of the first radome and/or the second radome is removable.
16. The aerodynamic device of claim 1 , further comprising at least one light emitting device, a window washing apparatus, and/or a window wiping apparatus.
17. A vehicle comprising the aerodynamic device of claim 1 .
18. The vehicle of claim 17 , wherein the aerodynamic device is a spoiler positioned at a rear portion of the vehicle.
19. The vehicle of claim 17 , wherein the aerodynamic device is a spoiler configured to form a generally continuous surface with a roof of the vehicle.
20. The aerodynamic device of claim 1 , wherein at least a portion of each of the first and second radomes is formed integrally with the aerodynamic device.