RFID-based flexible low-cost EM field probe

The capability of the RFID tags as a low cost flexible device to measure the EM complex field distribution has been presented and some preliminary results presented. The devices do not need any kind of electrical connexion giving them a high versatility to act as a remote EM probing device under different conditions of positioning and accessibility. Sensitivity and dynamic range are aspects that need to be further investigated in order to have systems capable of exploring large areas in terms of spatial dimensions and amplitude levels.