Research On Performance Test Of RFID Device Based On Electromagnetic Reverberation Chamber

Radio Frequency Identification(RFID)technology is a kind of automatic target identification technology which is achieved by backscatter coupling.It reads and writes electronic tags or RF cards by sending radio frequency signals from the reader and writer,thus realizing non-contact two-way data communication for the purpose of target identification and information exchange.With the continuous innovation of information technology,the application of RFID technology is more and more widely,such as automotive industry,warehouse management,identity recognition,e-commerce,and so on.In the development of the application of RFID technology,its application environment is complex and variable.Usually,it is not limited to simple and stable environments,but needs to be adapted to the test of various fast changing environments.Although many researchers have done a lot of research on RFID technology testing,there are still some limitations in the existing related testing standards:that is,the current testing of radio frequency identification devices is only under ideal conditions,which results in the inaccurate evaluation of the effectiveness and reliability of the performance of RFID devices under the actual complex wireless channel conditions.Therefore,this paper conducts the measurement and Simulation of wireless channel based on the electromagnetic reverberation chamber,and conducts the performance test research of RFD devices in complex wireless channel environment based on the electromagnetic reverberation chamber.In this paper,the working mode and working principle of the electromagnetic reverberation chamber are introduced in detail,the uniformity of the electromagnetic reverberation chamber is calculated accurately,the key measurement technologies of complex wireless channel parameters are studied,various complex wireless channel environments are simulated,the standard complex wireless channel measuring devices and analog repetition devices are established,and the effective trace of path attenuation and root mean square time extension is achieved.Source and accurate delivery.On the basis of quantitatively simulating and reproducing complex wireless channel parameters in the electromagnetic reverberation chamber,the requirements for parameter measurement and device construction in the performance test of RFID devices under complex wireless channel conditions are studied and analyzed,and the corresponding test device is initially established and the actual performance test is carried out.