PROJECT TITLE :
Orientation Detection Using Passive UHF RFID Technology [Education Column]
A straightforward, compact, rechargeable handheld radio-frequency identification (RFID) reader was designed to detect the orientation of tagged objects. The system uses a linearly polarized reader antenna and the orientation sensor of the mobile device to identify the orientation of the tag. The system works within the ultra-high-frequency (UHF) RFID band. Detailed testing was done in numerous surroundings with varied materials and tags. The system was in a position to correctly identify the orientation in several cases with a median angular error of less than ten°. This system will also be used to demonstrate the concept of polarization.
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