This paper proposes a chip-less RFID tag based on microstrip resonators that works in the microwave frequency bands. The chip-less tag proposed is low-cost, easy to fabricate, and can be read wirelessly at long distances. Two tag prototypes, one with a single and the other with multiple resonators, have been designed, fabricated, and experimentally assessed. In particular, microstrip square resonators slotted in the center and loaded with capacitive structures have been considered. Moreover, to improve the sensibility and the operative range and to avoid alignment problems, the tags have been mounted on the focus of a linear 2D parabolic mirror. The obtained results are quite satisfactory in terms of operative range, sensibility, and accuracy. The preliminary experimental assessment shows that the proposed chip-less configuration can be easily adapted to different application scenarios to improve the passive signal and wireless reading capability.
A Simple Frequency Domain-Based Chipless Radio Frequency Identifier (RFID) System
Mulloni, Viviana;Marchi, Giada;
2025-01-01
Abstract
This paper proposes a chip-less RFID tag based on microstrip resonators that works in the microwave frequency bands. The chip-less tag proposed is low-cost, easy to fabricate, and can be read wirelessly at long distances. Two tag prototypes, one with a single and the other with multiple resonators, have been designed, fabricated, and experimentally assessed. In particular, microstrip square resonators slotted in the center and loaded with capacitive structures have been considered. Moreover, to improve the sensibility and the operative range and to avoid alignment problems, the tags have been mounted on the focus of a linear 2D parabolic mirror. The obtained results are quite satisfactory in terms of operative range, sensibility, and accuracy. The preliminary experimental assessment shows that the proposed chip-less configuration can be easily adapted to different application scenarios to improve the passive signal and wireless reading capability.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.