Vehicle window having a transponder
A vehicle window includes a first glass pane, a transponder having an antenna and a control unit for communicating with a reader, wherein the control unit includes a memory for storing identification data. A reflector is associated with and spaced apart from the transponder for increasing an antenna gain of the antenna, wherein the reflector is implemented as a transparent, electrically conductive coating and/or as a metallic ring.
1. Vehicle window, comprising:
a) a first glass pane,
b) a transponder having an antenna and a control unit for communicating with a reader, wherein the control unit includes a memory for storing identification data,
the vehicle window further comprising a reflector associated with and spaced apart from the transponder for increasing an antenna gain of the antenna, wherein the reflector is implemented as a transparent, electrically conductive coating and/or as a metallic ring,
wherein the transparent, electrically conductive coating has a region permeable to electromagnetic radiation in the frequency range of the antenna, and wherein the transponder or a surface of an orthogonal projection of the transponder is entirely arranged in a region permeable to electromagnetic radiation in the frequency range of the antenna.
2. The vehicle window according to claim 1 , wherein the reflector has at least one line conductor.
3. The vehicle window according to claim 1 , wherein the reflector has two line conductors, which are in each case arranged at the same distance from the transponder.
4. The vehicle window according to claim 1 , wherein the reflector is implemented as a closed ring.
5. The vehicle window according to claim 1 , wherein the operation of the transponder is energy self-sufficient.
6. The vehicle window according to claim 1 , wherein the transponder is an RFID transponder.
7. The vehicle window according to claim 1 , wherein the transponder operates in a frequency range from 800 MHz to 3 GHz.
8. The vehicle window according to claim 1 , wherein die identification data are provided for identification of a vehicle.
9. The vehicle window according to claim 1 , wherein the first glass pane is joined to a second glass pane via a thermoplastic intermediate layer.
10. The vehicle window according to claim 1 , wherein the vehicle window is a motor vehicle window.
11. Vehicle, including a vehicle window according to claim 1 .
12. Method for producing a vehicle window according to claim 1 , the method comprising:
a) attaching the transponder having the control unit for communicating with a reader to a surface of the first glass pane, to a surface of a second glass pane or between the first and the second glass pane, wherein the control unit has a memory for storing identification data and the antenna, and
b) arranging the reflector associated with and spaced apart from the transponder for increasing an antenna gain of the antenna on a surface of the first glass pane, on a surface of the second glass pane, or between the first and the second glass pane.
13. A method comprising utilizing the vehicle window according to claim 1 in a vehicle of transportation for travel on land, in the air, or on water.
14. The vehicle window according to claim 7 , wherein the frequency range is from 800 MHz to 2.45 GHz.
15. The vehicle window according to claim 14 , wherein the frequency range is from 860 MHz to 930 MHz.
16. The vehicle according to claim 11 , wherein the vehicle is a motor vehicle.
17. The method according to claim 13 , wherein the vehicle is motor vehicle.
18. The method according to claim 13 , wherein the vehicle window is a windshield, rear window, and/or roof panel.
19. The vehicle window according to claim 1 , wherein the transponder is positioned substantially centrally in the region permeable to electromagnetic radiation.