Johanna Virkki

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—– The embedding of radio frequency identification (RFID) tags into plywood boards will enable the identification and tracking of individual plywood boards and end products of plywood. Even more benefits can be achieved by adding sensing functions into these tags. We present tags that are embeddable inside plywood by direct inkjet-printing on pure birch(More)
—Material choices in electronic devices have a huge impact on the environment. The use of environmental-friendly processes and renewable materials is a growing trend. We present the inkjet-printing of antennas for passive UHF RFID tags on wood, paper, and cardboard. We printed the prototype antennas without surface treatments. We evaluated the performance(More)
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. Abstract: We compare the maximum read range of passive ultra high frequency (UHF) radio frequency identification(More)
—In this paper, the parameters for inkjet-printing and photonic sintering of silver and copper nanoparticle inks on flexible polyimide substrate were studied by manufacturing simple line patterns. The results were then utilized to manufacture passive ultra high frequency (UHF) radio frequency identification (RFID) tag antennas on polyimide substrate. The(More)
Characterization of two-turns external loop antenna with magnetic core for efficient wireless powering of cortical implants, " accepted in IEEE Antennas Wireless Propag. Lett., 2016. Brush-painting and photonical sintering of copper and silver inks on cotton fabric to form antennas for wearable UHF RFID tags, " published online before print in " Fabrication(More)
—The use of passive ultra high-frequency (UHF) radio frequency identification (RFID) integrated into plywood boards is proposed to enable the identification and tracking of individual plywood boards and end products of plywood. For the first time, tags are embeddable inside plywood by direct inkjet-printing tag antennas on pure birch veneer. The use of(More)