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How does RFID work without power?
The signal is necessary to wake or activate the tag and is transmitted through the antenna. The signal itself is a form of energy that can be used to power the tag. The transponder is the part of the RFID tag that converts that radio frequency into usable power, as well as sends and receives messages.
What is meant by RFID reader?
What is the frequency of RFID?
What is a RFID system?
An RFID system consists of three components: an antenna and transceiver (often combined into one reader) and a transponder (the tag). The antenna uses radio frequency waves to transmit a signal that activates the transponder. When activated, the tag transmits data back to the antenna.
What is the use of RFID?
What is the RFID technology?

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