The main difference between RFID active technology and RFID passive technology is the presence of a battery inside active transponders. This battery allows to increase the transmission power and consequently also the reading distance. Instead, passive technology, in order to propagate the electromagnetic field uses a condenser that, once load, generates the electromagnetic field which moves the information present in the chip.
Passive RFID systems use tags with no internal power source and instead are powered by the electromagnetic energy transmitted from an RFID reader. Passive RFID tags are used for applications such as access control, file tracking, race timing, supply chain management,smart labels, and more. The lower price point per tag makes employing passive RFID systems economical for many industries.
Active RFID systems use battery-powered RFID tags that continuously broadcast their own signal. Active RFID tags are commonly used as “beacons” to accurately track the real-time location of assets or in high-speed environments such as tolling. Active tags provide a much longer read range than passive tags, but they are also much more expensive.
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For more information about RFID Tag, please visit:
http://www.rfidhy.com/rfid-product/industry-logistics/
