Mobility

Novel Dragon Shape UHF RFID Tag Antenna

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Executive Summary

Novel modified dragon shape UHF RFID tag antenna is proposed where both flexibility and compactness features are achieved. Choosing LCP material as antenna substrate and modified dragon curve as antenna shape both flexibility and compactness features are achieved, respectively. Induced EMF method is used considering wire radius effect to obtain a new expression for the input impedance of conventional dipole. Modified dragon shape is applied to the conventional dipole and the obtained shape is conjugate matched to the RFID tag chip. The obtained results are compared with previous published ones. Structure RCS and CMF are investigated. PRC of the proposed structure is computed, measured and discussed. The proposed structure is novel, cheap, flexible, compact, wideband and suitable for UHF RFID applications.

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