Compact and Coding Expandable Chipless RFID Tag with Bending Arms
Keywords:
Chipless RFID tag, multi-stop band filter, resonant unitsAbstract
In order to construct a compact chipless RFID tag with scalable coding capacity, a design is proposed that includes bending arms along both sides of the microstrip transmission line. Each bending arm produces a resonant frequency, which indicates one bit. And the bending structure can effectively reduce the coupling between units. A 12-bit chipless RFID tag with dimensions of 37×17.7mm2 is designed with a frequency band from 5GHz to 6.05GHz. And a 40-bit chipless RFID tag is proposed with a frequency band from 2.95GHz to 5.65GHz. Both amplitude and Group Delay responses of the proposed tag are measured and analyzed. The measurement results are in good agreement with the simulation results. The measured results achieve stability and high capacity the coded information.
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References
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