Development of RFID technology RFID Chip Production

　　RFID technology originated in the identification friend or foe system of World War II in 1948. It is a non-contact automatic identification technology based on the principle of shooting products. It uses wireless communication technology and large-scale integrated circuit technology as the core. The radio frequency signal and its spatial coupling and transmission characteristics drive the electronic tag circuit to transmit its stored unique code, which can automatically identify stationary or moving targets, and efficiently obtain target information data. It can also be achieved through further combination with Internet technology. Target tracking and information sharing within the ball range.

　　In 1948, Harry Stockman published the communication using reflected power, which laid the theoretical foundation for radio frequency identification RFID. From 1981 to 1990. RFID technology and products have entered the commercial application stage, and applications of various scales have begun to appear. After 1990, the standardization of RFID technology has received increasing attention, RFID products have been widely adopted, and the theory of RFID technology has been enriched and improved. Single-chip electronic tags, multi-electronic tag reading, wireless readable and writable, long-distance identification of passive electronic tags, and RFID adapting to high-speed moving objects are becoming a reality.

　　RFID technology developed earlier and faster abroad. Especially in the United States, Britain, Germany, Sweden, Switzerland, Japan, South Africa, there are relatively mature and advanced RFID systems. Among them, low-frequency short-range RFID systems are mainly concentrated in 125KHz, 13.56MHz systems; high-frequency long-range RFID systems are mainly concentrated in UHF frequency band (902~928MHz) 915MHz, 2.45GHz, 5.8GHz.

　　my country has also developed rapidly in the research of RFID technology, and the market cultivation has begun to bear fruit. A typical example is the launch of a long-distance automatic identification system with independent intellectual property rights in the construction of China's railway car number automatic identification system. In terms of short-distance RFID applications, many cities have implemented public transport radio frequency cards as prepaid electronic tickets, prepaid electronic meal cards and other applications. In terms of RFID technology research and product development, China has the ability to independently develop low-frequency, high-frequency, and microwave RFID electronic tags and readers, and system integration capabilities. The gap with foreign advanced RFID technology is mainly reflected in RFID chip technology. Nevertheless, in terms of tag chip design and development, there have been many successful low-frequency RFID system tag chips in the market in China.

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