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February 7th, 2008
At yesterday's International Solid State Circuit Conference, Holst Centre - founded by the Belgian nanoelectronics research center IMEC and the Dutch research center TNO - presents a plastic 64-bit inductively-coupled passive RFID tag operating at 13.56MHz. With a record 780bit/s data readout of 64 bits over 10cm, the device approaches item-level tagging requirements. The tag generates a 5-fold higher bit rate compared to state-of-the-art plastic RFID systems. The achievement paves the way for low-cost high-volume RFID tags to replace barcodes.
The RFID system consists of a low-cost inductive antenna, capacitor, plastic rectifier and plastic circuit, all on foil. The LC antenna resonates at 13.56MHz and powers up the organic rectifier with an AC voltage at this frequency. From this voltage, the rectifier generates the DC supply voltage for the 64-bit organic transponder chip which drives the modulation transistor between the on and off state with a 64bit code sequence. The foil with the transponder chip was processed by Polymer Vision.
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