Passive UltraWideBand RFID for localization
The developed system Ultra Wide Band – RFID allows for the precise location and tracking of tagged objects, at low cost. It is made by a reader that interrogates multiple tags (passive or semi-passive) thus determining their distance with centimeter-level accuracy.
The system Ultra Wide Band (UWB) – RFID is made by a reader that interrogates multiple tags (passive or semi-passive) in the vicinity by transmitting a query signal. The tags respond to reader via backscatter modulation that is to vary the load as a function of the antenna that the tag sends the reader (typically the identifier). By a proper analysis of the UWB backscattered signal, the reader is able to estimate with centimeter-level accuracy the distance of tags (ranging). If more readers are present, tags can be localized by combining all ranging estimates.
- Centimeter-level ranging accuracy of batteryless tags;
- RFID systems;
- Precise localization and tracking
of the objects with tags at low cost.
- Several UWB-RFID systems coexisting in the same area;
- Resistance to interference;
- Centimeter-level ranging;
- Low average power transmitted;
- Excellent penetration through walls;
- Higher degree of security ;
- High number of tags manageable simultaneously.