Zilong Chen, Yang Yang, Xiaoxiang He, Shengchuan Xiao
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Hybrid Frequency-Polarisation Coding Method for Chipless Radio-Frequency Identification Tags With Angular Orientation
In this paper, a hybrid coding method for chipless radio-frequency identification (RFID) tag with angular orientation is proposed. Frequency-shift coding is achieved by controlling the size of three complementary split single ring resonators (CSSRR). And on the basis, we add a dimension of polarisation coding, which is achieved through changes in the radar cross-section (RCS) response caused by the rotation of CSSRR. Three angular-orientation structures are designed to identify the polarised rotating angle of each CSSRR by their changes in the RCS response. The simulated and measured results show that the hybrid frequency-polarisation coding can generate 884736 coded IDs (19.75 bits), which is 216 times more than the number of IDs generated by the frequency coding only.
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Radiowave propagation at all frequencies and environments.
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