A Kind Of RFID Solution With The Feature Of Liner-feedback-shift-register

Radio Frequency Identification is a new method of the auto-identification filed, it is the technology of which makes use of radio frequency coupling in space(alternative magnetic field or alternative electromagnetic field) to implement information communication and realize the automatic identification. As for the using of the world and China, we give a solution of the RFID system.This paper studied a kind of radio frequency identification (RFID) solution with the feature of liner-feedback-shift-register, which works at the 13.56MHz frequency. It shows the designer of the tag and target, some innovations of the key circuits and arithmetic, such as using MOS rather than diode for commutate; the impendence modulation of the tag, the type D radio frequency power amplifier.In the introduction of the analog part, it gives some key circuits' designer, such as the impendence modulation of the tag, improved commutate circuits; the modulation of the target and the type D power amplifier.In the introduction of the digit part, it gives the designer of the control section and the memory section, the liner-feedback-shift-register and show the work principle of the tag. This solution can improve the efficiency and reliability by taking advantage of the liner-serial's randomicity. Combining the shift-register and EEPROM as control cell can increase the speed of responding. It also can decrease the responding of reading or writing signals, system consumption for the system through using the FRAM as memory cell.The key part of the designer has already done, after the module inter test and the system test, we confirm the system will be popular used in the field of book management, goods distribution, products circulation and so on.