Design Guidelines for Gap Coupled Spiral Microstrip Resonators in Chipless RFID Tags

A Glimpse to the Future of RFID Technology Guest Editorial of the Special Issue on IEEE RFID-TA 2019 Conference

“…Their increasing interest is due to their reduced cost with respect to classical passive RFID tags thank to the removal of the chip, which represents the most extensive part. To implement a chipless RFID system, the tag design is an important aspect [items (25) and (26) in the Appendix]. Paredes et al [item (25) in the Appendix] designed a tag consisting of a chain of metal patches etched or printed on a dielectric substrate, and tag encoding is achieved by patch size.…”