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MULTI-FREQUENCY RFID TAG, READ AND WRITE DEVICE, AND READ AND WRITE METHOD

Abstract(summary):

The present invention relates to a multi-frequency RFID tag, a read and write device, and a read and write method. The RFID tag comprises a first far field antenna and a first near field antenna. The first far field antenna works at a read frequency and the first near field antenna works at a write frequency. A tag read operation and a tag write operation aimed at the same tag content information are implemented only through the read frequency and write frequency respectively. In the present invention, characteristics of different frequency bands are used, to separate the read operation from the write operation at different frequency bands, the same data storage space is used, the passive manner is used without requiring external power supply, and the anti-metal function is achieved by using anti-metal antennas and packaging materials, so the present invention is suitable for being widely used in the field of industrial control.


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