Realization of RF Section of OBU in ETC System

A new way to realize RF section of OBU in ETC is introduced in this article. Based on the function to be accomplished the hardware is designed and the software is programmed. A dedicated chip for ETC, BK5822, is used in RF transceiver unit, and the RF transceiver link is designed. A simple-structured notched-rectangular antenna fed by micro strip line, which can be connected with RF link easily, can realize right handed circularly polarized. Its other parameters meet the DSRC standard. Coordinated by the related software, the RF section designed in this article has been applied in OBU and the communication with RSU has been realized.