Process-Dependence of Inkjet Printed Folded Dipole Antenna for 2.45 Ghz RFID Tags

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 4Language: englishTyp: PDF

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Shao, Botao; Chen, Qiang; Amin, Yasar; Hllstedt, Julius; Tenhunen, Hannu; Zheng, Li-Rong (iPack Vinn Excellence Center, School of Information and Communication Technology, KTH (Royal Institute of Technology), Forum 120, 164 40 Stockholm-Kista, Sweden)
Liu, Ran (Department of Microelectronics, Fudan University, 200433, Shanghai, Chi)

This paper focuses on the process dependence of an inkjet printed folded dipole antenna based on practical parameters in a typical inkjet printing process. We present the effect of width variations and number of overprinting times on the antenna properties such as gain, radiation efficiency and input impedance. Furthermore we investigate the read range degradation of the tag on which the antenna is attached, due to width or thickness variations. In addition, an comparison between an inkjet printed antenna on a regular paper substrate and a copper antenna on Printed Circuit Board (PCB) was made, manifesting the strong competitiveness of the printed silver antenna as a low cost solution.