Self-Powered Wireless Temperature Sensors Exploit RFID Technology
IEEE Pervasive Computing
Low power AES hardware architecture for radio frequency identification
IWSEC'06 Proceedings of the 1st international conference on Security
A coin detection system by coupled printed spiral inductors
WSEAS Transactions on Circuits and Systems
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A passive RFID tag with security and measurement concepts is presented. The sensor interface module has a resistance deviation-to-time interval converter. The passive RFID tag embedded with a converter is described. A prototype RFID tag using a converter has been built with CMOS 0.35µm technology. The experimental results have shown that the tag has an 8 bits resolution and a linearity characteristic when the output pulse is counted by a 3.39 MHz clock. The proposed converter is insensitive to the pulse width change regardless of environment changes. The design principle and the circuit configuration are simple. The proposed converter is expected to find wide applications in the signal processing of various sensors.