Zeshan Ali is a postdoctoral researcher with the Grenoble INP, part of Université Grenoble Alpes, in France. He specializes in the design of RF/microwave circuits for chipless RFID tags and systems, radar signal processing, multi-band filters, reconfigurable filters and optimization methods. Etienne Perret is an Associate Professor with the Grenoble INP, part of Université Grenoble Alpes. He is interested in electromagnetic modeling of passive devices for millimeter and submillimeter-wave applications, wireless communication systems including RFID and chipless RFID technologies, non-volatile nano-ionic RF switches, and advanced computer-aided design techniques based on the development of automated co-design synthesis computational approaches. He has contributed to numerous pioneering works in the field of chipless RFID. Nicolas Barbot is Associate Professor with the Grenoble INP, part of Université Grenoble Alpes. His research interests include backscattering communications, RFID, chipless RFID and antenna theory, especially the use of chipless tags as low-cost, battery-free and robust sensors. Romain Siragusa is Associate Professor with the Grenoble INP, part of Université Grenoble Alpes. He specializes in the field of wireless communications, especially RFID.