Button‐shaped radio‐frequency identification tag combining three‐dimensional and inkjet printing technologies

A ‘button‐shaped’ three‐dimensional (3D) radio‐frequency identification (RFID) tag combining 3D printing and inkjet printing technologies in fabrication for the first time is proposed. The button shape facilitates the tag's integration with clothes for the purposes of identification and access control. The proposed tag features a compact size (radius 15 mm, height 7.5 mm) and a good performance with a measured maximum reading range of 2.1 m (4.0 W equivalent isotropically radiated power) in the RFID Federal Communications Commission band (902–928 MHz). Furthermore, the combination of the 3D printing and inkjet printing technologies reduces the fabrication time and cost.