Programmable Organic Chipless RFID Tags Inkjet Printed on Paper Substrates

Abstract

In this paper, an organic, fully recyclable and eco-friendly 20-bit inkjet-printed chipless RFID tag is presented. The tag operates in the near field and is implemented by means of chains of resonant elements. The characterization and manufacturing process of the tag, printed with a few layers of a commercial organic ink on conventional paper substrate (DIN A4), are presented, and tag functionality is demonstrated by reading it by means of a custom-designed reader. The tags are read by proximity (through the near field), by displacing them over a resonator-loaded transmission line, and each resonant element (bit) of the tag is interrogated by a harmonic signal tuned to the resonance frequency. The coupling between the reader line and the resonant elements of the tag produce and amplitude modulated (AM) signal containing the identification (ID) code of the tag.

Experimental Study of the Jetting Behavior of High-Viscosity Nanosilver Inks in Inkjet-Based 3D Printing

“…Inkjet printing has been developed as a typical 3D printing process method that is usually termed inkjet-based 3D printing. It has attracted wide attention in the application of printed electronics to create functional transistors [1], strains [2], flexible devices [3], RFID tags [4], and antennas [5] due to its potential advantages, such as having a simple process compared with photolithography or etching process, reduction of waste materials, and cost-effectiveness with direct patterning [6]. However, current inkjet-printed electronics are restricted to planar or quasi-3D patterns because the utilized low-viscosity (<1000 mPa•s) conductive ink limits its 3D-forming capability.…”