April 21, 2023
WiCom lab, Institute of Informatics and Telecommunications (IIT) hosted guest speaker Mr Florindo Bevilacqua, Ph.D. student at the University of Salerno in Italy, to give a talk titled Chipless RFID tags: design, manufacturing and characterisation on Thursday 27 April 2023 at 14:00.
Watch the video of the talk:
About the talk: Nowadays, the target identification can profit of the Radio Frequency Identification (RFID) technology, a rapidly developing automatic wireless communication approach used to identify tagged objects. In this framework, a promising technology is the one based on passive tags, the so called chipless RFID tags. These devices are capable of encoding data in the scattered electromagnetic wave, either in time or frequency domain, without exploiting any active electronic circuit. Although time-coded tags show an increased detection robustness, frequency-coded tags are more practical in terms of coding capacity, tag size, and reader costs. The considered tags are also called Radar Cross Section (RCS) based tags. These tags consist of a carrier substrate containing several scattering resonators physically implementing the tag-ID. A specified resonance frequency in the spectrum of the backscattered signal is associated to each resonator. Adding or dropping resonators allow the coding of different IDs. Chipless RFID tag design strategies mainly focus on improving the number of bits coded in a given physical area. Accordingly, the tags can be made smaller in size while still maintaining their performance and functionality. Moreover, to be more versatile and adaptable to different applications scenarios, the reading capability of the tags should be almost independent of the incident direction of the impinging illuminating wave. Furthermore, the research on chipless RFID technology can be also exploited to meet the growing demand for wearable applications. In this context, embroidered chipless RFID tags are a promising type of wearable RFID tags that can be integrated into textiles and other fabrics. This talk will present the research results about the key steps involved in designing, manufacturing, and characterization of innovative and compact chipless RFID tags. Particularly, the robustness of reading the tags at different angles of incidence has been experimentally validated. In addition, the preliminary steps to develop an embroidered chipless RFID tag for wearable applications will also be briefly discussed.
Short bio: Florindo Bevilacqua received the Master degree (summa cum laude) in Biomedical Engineering from the University of Naples Federico II, Italy, in 2020. Since November 2020, he is a PhD. candidate in “Innovative Engineering Technologies for Industrial Sustainability”, at the University of Salerno, Italy, “track applied electromagnetics”, under the supervision of the Professor Francesco D’Agostino (University of Salerno) and Professor Amedeo Capozzoli (University of Naples Federico II). During his Ph.D. program, he is collaborating with the Electromagnetic Field Research Group of the University of Naples Federico. The abroad studying period of his Ph.D. research activity, has been completed at the Wireless Communications Laboratory (WiCom) of the Institute of Informatics and Telecommunications (IIT) of the Greek National Research Centre “Demokritos” (NCSRD), under the supervision of the Dr. Antonis Alexandridis and the Professor Yiannis Vardaxoglou. His current research interests include, complex and phaseless near-field-far-field transformation techniques, inverse problems, complex and phaseless inverse scattering, tomography, and design of chipless radio frequency identification tag.
