What is the working principle of RFID?

2019-07-19 16:41:04 6

The basic working principle of RFID technology is not complicated: the reader transmits a specific frequency of the radio frequency signal through the transmitting antenna, and generates an induced current when the electronic tag enters the effective working area, thereby obtaining energy, and the electronic tag is activated, so that the electronic tag encodes itself. The information is sent out through the built-in RF antenna; the receiving antenna of the reader receives the modulated signal sent from the tag, and transmits it to the reader signal processing module via the antenna adjuster. After demodulation and decoding, the valid information is sent to the background host system. Correlated processing; the host system identifies the identity of the tag according to the logical operation, and performs corresponding processing and control for different settings, and finally issues a command signal to control the reader to complete the corresponding read and write operations.

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