The differences between ultra-high frequency and high-frequency RFID electronic tags in their applications

　　With the rapid development of IoT technology, the application of electronic tags now spans various fields.

     Today, let's briefly understand the differences between ultra-high frequency and high-frequency RFID electronic tags in their applications:

　　The typical operating frequency of high-frequency RFID tags is 13.56MHz, generally passive mode. When exchanging data with the tag, the tag must be located within the near-field area radiated by the RFID reader antenna. The reading distance of high-frequency tags is generally less than 1 meter. Because high-frequency tags can be conveniently made into card-like forms, they are widely used in electronic tickets, electronic ID cards, electronic lock anti-theft (electronic remote lock controllers), community property management, and building access control systems.

　　UHF tags operate at 860MHz and between Suntech and 960MHz, and can be divided into active and passive tags. During operation, the RFID tag is located in the far-field region of the UHF reader antenna's radiation field, and the coupling between the RFID tag and it is electromagnetic coupling. The antenna radiation field of the UHF reader provides RF energy to passive tags, waking them up. The corresponding RFID system generally has a reading distance greater than 1 meter, with typical cases being 4 meters for Shangtai and 6 meters, with a maximum range of over 10 meters. Reader antennas are generally directional; only RF tags within the reader antenna's directional beam range can be read/written. Due to their long reading range and fast data transmission rates, UHF tags are widely used for automatic identification of railway vehicles, container identification, and can also be used in highway vehicle identification and automatic toll collection systems.

　　Features of high-frequency and ultra-high-frequency electronic tags:

　　1. High-frequency tags are cheaper than ultra-high frequency tags, save energy, have strong penetration power through non-metallic objects, and operate at a frequency not restricted by radio frequency control, making them ideal for objects with high water content, such as fruit.

　　2. UHF has a wide range of operation and fast data transmission speed, but it consumes more energy and has weaker penetration, so the work area cannot be heavily interfered, making it suitable for monitoring goods transported from seaports to warehouses. Moreover, UHF systems are relatively expensive, generally about 10 times more expensive.

　　That's all for the differences between ultra-high frequency and high-frequency RFID electronic tags in application.