UHF RFID tag antennas printed directly onto cardboard

Ultra-high frequency radio frequency identification tag antennas were screen printed directly onto pharmaceutical packaging and a comparison between commercially available inlays and printed tag antennas using two different inks was made. The research revealed that the properties of the reference tag were slightly better than those for tags A and B on the empty boxes. Nevertheless, all of the samples can be successfully read for lengths of up to 105 and 125 cm for horizontally and vertically oriented tags, respectively. None of the tags compared can be read successfully when placed in close proximity to a metallic surface or a liquid (Journal of Imaging Science and Technology, September 2015).
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