Abstract
This paper presents an optimized ink-reducing meander dipole antenna structure suitable for implementing printed radio frequency identification (RFID) tags. The proposed antenna designs contain empty ink-reducing hollowed-out areas along the antenna's arms such that the resulting antennas require much less conductive ink to produce yet still achieve decent antenna performance compared with the conventional solid-arm dipole antennas. The simulation results demonstrate that when the ratio between the width of the hollowed-out areas and the width of the antenna arms is about 0.6, the resulting RFID tag experiences a slight read range performance degradation of <10%, while it offers a sizeable ink consumption reduction of almost 50%.
Highlights
Printed radio frequency identification (RFID) technology has recently gained much interest for item-level labeling and tracking applications
By utilizing a low-cost printing technique such as inkjet printing or screen printing, a printed RFID tag antenna of a desirable planar structure can be economically formed such that conductive ink is only printed on the intended areas and no ink is wasted in the unused nonconductive areas [3,4,5,6,7]
A costeffective printed RFID tag antenna design should minimize the amount of conductive ink required for printing a designed tag antenna structure, while the resulting RFID tag should still achieve good read range performance
Summary
Printed radio frequency identification (RFID) technology has recently gained much interest for item-level labeling and tracking applications. A costeffective printed RFID tag antenna design should minimize the amount of conductive ink required for printing a designed tag antenna structure, while the resulting RFID tag should still achieve good read range performance. In [9, 10], a narrow-line RFID dipole antenna structure is proposed, but the resulting design achieves low antenna gain and poor read range performance. This work proposes an ink-reducing meander dipole antenna structure that requires less conductive ink for fabrication of good performance low-cost RFID tags. The simulation results demonstrate that the proposed ink-reducing meander dipole antenna structure can trim down the amount of conductive ink required to produce the resulting tag by about 46%, while the resulting printed RFID tag still achieves a comparable level of read range performance as the printed RFID tag composed of a solid-arm dipole antenna
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