Uhf Rfid Multi-protocol Card Reader Design And System Applications

UHF RFID system is becoming more widespread due to its advantage such as fast read w rite speed largememory long recognition distance and simultaneous read write multi tag.This paper introduces the characteristic and structure and principle and read write method of an UHF RFID tag accorded several protocol and presents the solution of its interrogator expatiates hardware design of interrogator and flow of software program.The design scheme of a RFID Radio Frequency Identification System is given in this paper The backscattermodulation technique is used to transmit the data to the reader from a tag.