Read Range/Rate Improvement of an LF RFID-Based Tracking System

The mechanical vibration of metal structures has a great effect on low frequency (LF) radio frequency identification (RFID). The return signal link established from the tag to the reader is affected by induced current caused by magnetic coupling. The interference affects the performance of the RFID reader by distorting the binary information transmitted by the tag. This paper presents a new practical technique that avoids the coupling interference, and improves the reading range. The RFID system was analyzed at LF level to provide a new solution that complies with ISO standards to satisfy the industrial application requirements. Measurements and experimental results show the validity of the proposed solution and show a significant enhancement in performance.