High-Performance Chipless Radio-Frequency Identification Tags: Using a Slow-Wave Approach for Miniaturized Structure
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A novel planar chipless radio frequency identification (RFID) tag is introduced in this paper. The tag is composed of miniaturized multiple reflecting antennas based on a slow wave structure. To validate the proposed approach, a tag with a coding capacity of 16 bits has been designed with a compact size of 15 × 21 mm². Tags with different pattern configurations have been performed using a Rogers RO4003 substrate and its radar cross-section responses have been measured. Compared to conventional multi-resonator tags, the proposed tag offers a good miniaturization ratio and spectral coding efficiency. In addition, the measurements revealed high Q factor and coding robustness which demonstrates the efficiency of the used approach to develop high performance chipless tags.
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