Researchers have designed a system capable of simultaneously measuring hundreds of radio frequency identification (RFID) tags and rapidly testing new RFID tag prototypes.If several RFID tags are in the vicinity of a reader, the reader usually communicates with the tag transmitting the most powerful signal first and then puts it to ‘‘sleep’’ to prevent it from transmitting repeatedly. Then the reader moves to the next most powerful signal, and so on. This process can be very time-consuming.
The research, funded by the National Science Foundation and conducted with former graduate student Anil Rohatgi and current graduate student Joshua Griffin, was presented in April at the IEEE International Conference on RFID.
“This testbed allows us to measure the signal strength of tags hidden behind other tags and to rapidly test unique antenna configurations and multiple antennas without actually constructing new tags for each experiment,” said Gregory Durgin, an assistant professor in the Georgia Institute of Technology’s School of Electrical and Computer Engineering.
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