With the development of the Internet of Things technology, RFID products have entered people's lives, and rfid electronic tags are involved in various fields. RFID tags have different functions at different frequencies, and their application fields are also different.
High-frequency RFID tag is a kind of RFID technology, its working frequency is 13.56 mhz, wavelength is about 22 m.
Usually when passive RFID tags work, the digital exchange must be in the near-field area radiated by the RFID reader antenna. Because it is easy to make into a card shape, high-frequency tags are widely used in electronic ID cards, electronic door lock anti-theft (electronic remote door lock controllers), electronic ticketing, building access control systems, community property management, jewelry inventory management, smart shelf management, Fixed asset management system, library management system, etc.
The working frequency of UHF RFID tags is between 860MHz and 960MHz, which can be matched with different antennas, and can be divided into active RFID tags and passive RFID tags. When working, the RFID radio frequency tag should be in the long-distance area of the UHF reader antenna radiation field, and the coupling method between the RFID tag and the antenna is electromagnetic coupling. The radiated field of the UHF reader antenna provides radio frequency energy to the passive tag and wakes up the passive tag. The reading distance of the corresponding radio frequency identification system is generally more than 1 meter, the typical case is 4 meters long and 6 meters, and the maximum can reach more than 10 meters. The RFID reader antenna is generally a directional antenna, which can only be within the directional beam range of the reader antenna. The corresponding RFID radio frequency identification system has a relatively long reading distance, so it can be used for automatic identification of vehicles, high-frequency identification of vehicles, high-speed identification, high-speed identification, and high-speed identification.
The characteristics of high frequency rfid electronic tag and ultra high frequency rfid electronic tag:
High-frequency tags are cheaper than UHF tags, have strong penetration into non-metallic objects, and their operating frequency is not restricted by radio frequency control. They are suitable for objects with high water content, such as fruits.
UHF tags have high recognition sensitivity, can be read by multiple tags, have a wide range of action, fast data transmission speed, energy consumption, weak penetration, and there should be no too much interference in the work area.