What is the difference between HF RFID and UHF RFID technology

source：hf RFID Popular：rfid fpc tag release time：2021-05-25 11:22:04 Article author：sznbone

　　Both HF RFID and UHF RFID are radio frequency identification technologies, but what is the difference between the two? We can analyze it from three dimensions: frequency, protocol, and application.

　　frequency

　　HF RFID is also called HF RFID, with a frequency of 13.56MHz, which is one of the first RFID technologies to be standardized. The reader transmits information through electromagnetic coupling with the electronic tag and the magnetic field, but its reading range and speed are relatively poor.

　　UHF RFID, also known as UHF RFID, has a frequency of 858-930MHz, and transmits data through radio frequency transmission. Its maximum reading range is 20-30 feet, which is better than high-frequency RFID.

　　protocol

　　There are several widely used communication protocols and standards for HF RFID, including ISO 15693 and ISO 14443. The biggest advantage of ISO 15693 is its recognition efficiency. The recognition distance can be extended to more than 1.5 meters through a larger power reader. ISO 14443 is commonly known as Mifare 1 series products. The recognition distance is short but the price is low and the confidentiality is good. Most Used for access control, bus cards, etc.

　　There are many standards for UHF RFID, but the most common ones in China are international standards, national standards, industry standards, corporate standards, etc. The most popular ones are the 6C and 6D standards, namely ISO/IEC 18000-6C(63) , ISO/IEC 18000-6D(64).

　　application

　　The high frequency ISO 15693 was used as a contactless smart card standard in the past. Now many collaborative ISO 15693 labeling and reading and writing products are also used for other purposes, including libraries, smart retail, archives and other fields. And ISO14443 is used by access control, public transportation, safe campus, home and school entrance and exit passages, etc.

　　UHF is the dominant technology in supply chain management, such as in box and pallet tracking, and returnable container identification. It is also widely used in industrial automation, business process tracking, asset management, inventory monitoring, handling monitoring, identity recognition, Depot management and document security and other fields.

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