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摘要
The integration of passive RFID tags in different applications is important in order to increase product functionality. The present research was focused on the optimization of the printing process conditions for the screen printing of passive UHF RFID antennas for the box tracking in logistics and for newspaper tracking in the retail trade. The antennas were printed on uncoated and coated recycled papers and coated cardboards. Two different conductive inks were applied with a semi-automatic screen printer. Drying conditions were varied in order to obtain a good print quality and the appropriate electrical properties of the conductive printed layer on all the printing substrates. The integration of flip chips was applied to the printed antennas. At the end of our research, an analysis of the printed antennas and the final UHF RFID tags was carried out. The quality of the printed antennas was first evaluated by image analysis, after which the electrical properties, such as the impedance and radiation patterns, were measured. To analyse the quality of UHF RFID tags, the maximum reading length was also determined.
We demonstrated that working UHF RFID tags with screen printed antennas can be realized on substrates with lower quality, such as uncoated recycled papers. The main influence on the final working tag is the quality of the conductive ink itself.
- 出版日期2014-4
