Screen printed resonant tags for electronic article surveillance tags

Screen printing has been employed to print resonant tags on a plastic film for using as a low cost electronic article surveillance tags. The resonant frequency of the printed resonant tags can be tuned by simply varying the lengths or sizes of printed inductors and capacitors. The quality factor (Q) of the printed resonant tags strongly depends on the sheet resistance of the printed inductive patterns. The maximum Q factor of printed resonant tags attained was about 45. Since this resonant tag can be printed roll-to-roll on plastic films, a number of tags with various resonance frequencies can be mass produced at a lower cost.