Hight Frequency RFID Tag
| Working Frequency | 3MHz ~ 30MHz |
|---|
We all know that for an RFID system to work properly, the reader and electronic tag must be “in resonance” or at the same frequency; otherwise, communication and identification cannot occur. Different operating frequencies also differ in their working principle, identification distance, and performance. Internationally, RFID is divided into different frequency categories such as Low Frequency (LF), High Frequency (HF), Ultra-High Frequency (UHF), and microwave, and each frequency band has certain differences in its working principle. LF and HF work on the principle of electromagnetic coupling, while UHF and microwave frequency bands use electromagnetic emission. The difference in operating frequency leads to different application scenarios.
The operating frequency of high-frequency RFID is generally 3MHz ~ 30MHz. The typical operating frequency is: 13.56MHz. From the perspective of radio frequency identification applications, the electronic tags in this frequency band should be classified as low-frequency tags because their working principle is exactly the same as that of low-frequency tags, that is, they work by inductive coupling. On the other hand, according to the general division of radio frequency, its working frequency band is also called high frequency, so it is often called high frequency tag. High-frequency electronic tags generally use passive methods, and their working energy is the same as that of low-frequency tags, which is also obtained from the radiation near-field of the reader coupling coil through inductive (magnetic) coupling. When the tag exchanges data with the reader, the tag must be located in the near-field area radiated by the reader’s antenna. The reading distance of IF tags is generally less than 1 meter (the maximum reading distance is 1.5 meters).
The biggest advantage of high-frequency RFID over low-frequency RFID:
1.Reading and writing is batch reading, and the transmission rate is faster.
2.The main application scenarios of high-frequency RFID can be subdivided from the two application angles of “card” and “label”.
Applications:
Bank cards, bus cards, access control cards, etc., as well as campus cards that can be seen everywhere in our daily life. High-frequency RFID “label” applications are mainly in the fields of book file management, anti-counterfeiting traceability, unmanned retail, industry, and medical treatment.
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