It shows 40 % save of conductive ink materials while keeping the same performance for conventional half-wave dipole antennas and meander line antennas. Furthermore, a novel RFID tag antenna design adopting linearly tapering technique is introduced. The field measurements of the proof-of-concept of the tag produced by toner-transferring process and flexible printed circuit boards are provided to validate the practicability of the reconfigurable ten-bit chipless RFID tag. In the second type of tags, a group of LC tanks are exploited for encoding data in frequency domain with their resonances. Both simulation and measurement efforts are made to verify the feasibility of the eight-bit fully printed paper-based tag.

To enable a fully printed encoding circuit, linearly tapering technique is adopted in the first type of tags to cope with parasitic resistances of printed conductors. Two types of chipless tags, one based on time-domain reflections and the other based on frequency domain signatures, are introduced.

This paper reviews recent advances in fully printed chipless radio frequency identification (RFID) technology with special concern on the discussion of coding theories, ID generating circuits, and tag antennas.

Printed rfid