A Ku-band RFID system for robust road-to-car communications

This paper deals with a robust RFID system for road-to-car communications. The RFID system operates in Ku-band and consists of a fixed transmitter, located in the road side, and of a receiver unit placed on the moving target, i.e. on the car. A slotted waveguide antenna array is used to accurately define the position of the moving object. When the latter crosses the antenna beam a triggering pulse is generated by the receiver: such a pulse can be used to reset and update the electronics aboard the vehicle and to log specific, location dependent information, into the car computer. A digital transmission of Gold sequences and a post-processing unit has been exploited to increase the robustness and the temporal accuracy of the system.