A 3D Printed Flexible Passive RFID for Temperature Sensing

The 3D printed passive radio frequency identification (RFID) tags with integrated electronic components on flexible polyimide is fabricated. The RF antenna and chip interconnection are printed with a silver nanoparticle based conductive ink. The antenna was optimized to match with resonance frequency of RFID chip as 910 MHz. And components and an RFID chip are mounted and soldered. Selected RFID chip contains electronic product code (EPC) and built-in temperature sensor, which allows temperature sensing ability as well as multiple identification.