Biography
Biography: Smail TEDJINI
Abstract
In this talk, we will explore some of the advances in the concepts and designs of UHF RFID tags. Some methods that allow RFID tags to acquire new capabilities, in particular sensing, will be discussed. Conventional RFID tags based on IC as well as chipless tags will be considered and examples of transforming these tags in sensors will be discussed. As example of tag sensors we will discuss the transformation of UHF RFID tag into a sensor of the permittivity of the substrate and we apply this concept for food quality monitoring by detecting the contamination of meat. Moreover using sensitive material, such as nanowires, could be used to monitor some of the environment parameters like temperature and humidity. Chipless examples using this evolution will be discussed. On the other hand, the exploitation of the nonlinearities generated by RFID chips could be considered for the design of semi-passive sensor. So an energy source is needed in this case, and one way is to collect the wasted energy generated by the nonlinear behavior of the RFID chip. So, the last part of the communication will discuss some new ideas extending the capabilities of RFID tags by exploiting their nonlinear behavior