Analysis of identification distance of passive UHF RFID tag based on RCS
基于RCS的无源超高频RFID标签识别距离研究*

Through studying the power collected,transmitted and reflected by the tag in a passive ultra high frequency(UHF) RFID system,this paper presented a new method to calculate the identification distance of the tag based on radar cross section(RCS).By using the high frequency electromagnetic simulation software FEKO on modeling and simulating of the tag antenna to compute the RCS of the tag antenna with different loads,and combining with the expression of identification distance, found the maximum identification distance. Then compared to measured parameters, the results coincided with the actual parameters. It has provided good reference to the identification performance of the tag.