Evaluation of 13.56 mhz rfid system considering tag magnetic field intensity

Abstract

RFID is an automatic recognition tool for correctly inputting information into the management system. In recent years, RFID has become widespread in various situations because it is very convenient. However, RFID is affected by the environment in the vicinity and communication performance changes. In the previous work, we have shown the possibility to expand the communication distance between the reader and the target tag when some interference tags come close to each other. In this paper, after increasing tags as the interference source, we evaluate the communication distance. Furthermore, we observe the magnetic field intensity on the position of the target tag by using the spectrum analyzer when some interference tags come close to each other.