期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：10
页码：10097
DOI：10.15680/IJIRSET.2015.0410056
出版社：S&S Publications
摘要：A multi frequency RFID reader/writer system is capable of identify different tags which are operatingat multi frequencies simultaneously. The unavailability of a dedicated read/writer for all rfid tags has created abottleneck in expansion of the rfid market. The present system can be able to support most regularly used frequenciesin the RFID world. The reader includes a radio frequency modulation and demodulation for each operating frequencyof the tags and these modules are integrated and interfaced to microcontroller. Each of the radio frequency modulereceives the signal from the tags with associated operating frequency and converts the return signal into a pulsesequence which is detected by the controller, it locks the pulse sequence and decodes the data according to the protocolassociated with the tag.
关键词：KEY WODS Multi frequency; RFID read/writer; tag
