DESIGN AND SIMULATION OF PASSIVE UHF RFID TEMPERATURE SENSOR TAG USING 3D EM SIMULATION TOOL

R.Thillaikkarasi, M.Revathi

Abstract: Temperature monitoring and analysis plays a vital role in many fields, predominantly in supply chain applications. Most commercial wireless tag antenna consists of transceivers, memory and batteries to maintain a temperature and time details which is costly, this in turn limits sensor tag employment. In this project, we propose a low cost temperature sensor on the passive UHF RFID tag to sense temperature variation in specified applications. The variations of field strength are measured through simulation in CST MW Studio. The reader distance range of the tag, in free space is limited over few meters. The probability of the proposed hypothesis is examined via theoretical and simulation means. It will be exposed that this sensing paradigm has great potential for frequently temperature sensing nodes and that helps to improve supply chain performance. To this multi-id tag antenna is implemented and compared to single tag antenna

Keywords: RFID tag design, UHF, temperature sensing, long range and CST

DOI: https://doi.org/10.15623/ijret.2014.0319037