VEHICLE WITH A DEVICE FOR PASSIVE ACCESS CONTROL

Abstract

A vehicle with a device for passive authorization control is provided. The device features ultra-wideband antenna devices, by means of which the device with an electronic key for checking authorization for access is able to communicate activation of a function or the starting of the vehicle. At least one of the antenna devices features at least one reflector that is arranged at a distance from one ultra-wideband antenna of the antenna device.

Claims

1. A device for passive authorization control of a vehicle, the device including: an electronic key for checking authorization for access; ultra-wideband antenna devices by means of which the device communicates activation of a function or the starting of the vehicle, wherein at least one of the antenna devices features at least one reflector that is arranged at a distance from an ultra-wideband antenna of the antenna device.

2. The vehicle in accordance with claim 1, wherein the reflector includes a reflector plate.

3. The vehicle in accordance with claim 1, wherein the reflector forms a part of the body of the vehicle.

4. The vehicle in accordance with claim 1, wherein the antenna device features a housing and the reflector is positioned within the housing and is formed by a housing wall and on a housing wall.

5. The vehicle in accordance with claim 4, wherein the reflector is a coating of a housing wall.

6. The vehicle in accordance with claim 1, wherein the reflector is flat.

7. The vehicle in accordance with claim 1, wherein the reflector is convex.

8. The vehicle in accordance with claim 1, wherein the antennas and the reflector allocated to them feature a distance of approx. 10 mm.

9. The vehicle in accordance with claim 1, wherein the antenna device features more than one antenna.

10. The vehicle in accordance with claim 1, wherein the antenna device is suitable and set up for transmitting linearly polarized signals.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Reference is now made more particularly to the drawings, which illustrate the best presently known mode of carrying out the invention and wherein similar reference characters indicate the same parts throughout the views.

[0015] FIG. 1 is a schematic diagram of an antenna arrangement in a vehicle.

DETAILED DESCRIPTION OF THE DRAWINGS

[0016] The antenna arrangement 1 shown in FIG. 1 features a housing 10 made of plastic in which the antenna is arranged. The antenna 12 is formed by tracks on a circuit carrier 13. The antenna arrangement 1 further features a reflector 11 that is designed to have a distance of approx. 10 mm to the antenna. The reflector 11 is designed to be on a housing wall and implemented in the form of a coating of the housing wall.

[0017] The housing 10 and thus the entire antenna arrangement 1 are mounted at an azimuth angle individual to each vehicle in relation to a direction longitudinal to the vehicle, preferentially in the area of a bumper or a vehicle lamp, behind a plastic cover on the bumper or the vehicle lamp that are penetrated by the signals transmitted by the antenna arrangement 1 and to be received by the antenna arrangement 1. The azimuth angle may, for example, be between 10 and 30 in relation to the direction longitudinal to the vehicle.

LIST OF REFERENCE SYMBOLS

[0018] 1 Antenna arrangement [0019] 10 Housing [0020] 11 Reflector [0021] 12 Antenna [0022] 13 Circuit carrier