FSM based FM0 and Miller encoder for UHF RFID Tag Emulator

The radio frequency identification system (RFID) is becoming very popular system wireless technologies. The UHF RFID tag emulator is a part of RFID testing tools. The UHF RFID tag emulator would be imitating the behavior of RFID Tag. The UHF RFID tag emulator (860 Mhz to 960 MHz) is aimed for testing the RFID systems and also as a general-purpose communication link to other electronic devices. In this work, we have presented high-level architecture of tag emulator and the design of FM0 encoder and Miller encoder. As motivated by finite state machine, encoders are discussed with particular focus to use the RFID emulator as data transport device and debugging tool. The synthesis result shows that FSM design is efficient and we have achieved operating frequency of 192.641 MHz and 188.644 MHz for FM0 and Miller encoders.