Current Situation and Future Trend of RFID-1.3 Classification of RFID tags

According to the internal structure of RFID tags, they are divided into active tags with battery (Tony Note: Also called active tags) and passive tags without battery (Tony Note: Also called passive tags) these two types. The Passive Tag uses the radio waves sent by the reader as the power to start the IC circuit. Therefore, it has the advantage of semi-permanent use, but the communication distance is shorter than that of the active tag. On the other hand, the active label uses an internal battery for wireless communication, so the communication distance is longer than that of the passive label. However, due to the limitation of the battery life, the active label is higher than the passive label, this is a disadvantage of relatively large size. (Table 2)

In addition, there is also an RFID tag with built-in battery: Do not send radio waves at ordinary times. When receiving the reader signal, the RFID tag with the sensor is sent for communication, wireless Communication is the same as passive labels, but the sensor uses a battery (Tony Note: for example, a temperature sensor or a vibration sensor ). This label is called semi-passive label (Tony Note: it is also a semi-passive label ).

(Table 2) Comparison of passive labels and active labels

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