Simulation of a Radio Frequency Identification System

As supply chains become more complex, RFID deployment is needed for efficient item identification and tracking. A system simulation of RFID is constructed in this paper. RFID systems consist of tags and readers. Tags are components that store the information and are physically attached to each item. The tag transmits information back to the reader by modulating an RF signal in the UHF frequency range. The reader recovers data to identify the tag. In this paper, the system is simulated by electrical models.The tag is represented by a simple model. A wireless channel with path loss and variable environmental factors establishes the reader-tag link. The reader has a mono-static architecture. Performance of the whole system can be studied as function of the operation distance. System modeling can be optimized by modifying the parameters of the building blocks. Finally, simulation results showing code recovery are also included in this paper.