Printable Chipless RFID Tags for IoT Applications

The recent growth in identification, tracking, and sensing applications for internet of things (IoT) has pushed the RFID technology to gain much attention due to its remarkable advantages compared to conventional identification techniques. A new chipless RFID tag based on multiresonator is discussed in this paper. The proposed tag has a data capacity of 6-bits in range of 6.1 to 6.6 GHz with a size of 3.313×1.0225 cm
²
. The density of coding per structure of the tag reaches 1.771 bits/cm
²
. The proposed tag consists of a multiresonating circuit and two cross-polarized ultra-wideband (UWB) antennas for transmission and reception respectively. The prototype of the tag is designed on a Taconic TLX-8 substrate with dielectric constant
$\varepsilon_{r}=2.55$
and 0.5 mm thickness. The proposed passive chipless RFID tag is suitable to be incorporated in many industrial and IoT applications.