RFID reader designing for identification of industrial metallic objects

摘要

An electronic circuit design of the RFID (Radio Frequency Identification) reader was the aim of our research. This device is designed for identification of transponders, which are present on the surface of metal elements or inside machine elements made of metal. In order to achieve that, we optimized the antenna reader circuit, that works in near field (magnetic coupling), by means of field flux lines analysis (using finite elements method) and experimental data collecting. Finally, one obtaines a specific shaped magnetic field around the reader.