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A simple tag antenna for the Korean ultra-high-frequency radio frequency identification (RFID) band (908–914 MHz) using a modified dipole structure is proposed. The overall dimension of the tag antenna is 64.1×17.8 mm. The input impedance of the designed tag antenna is 43+j800 Ω and is conjugately matched to a Philips EPC UCODE Gen 2 RFID tag microchip with an impedance of 43−j800 Ω at 912 MHz. Good wake-up sensitivity and radiation pattern characteristics were obtained in the desired frequency band.
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Choi et al. (2009) studied this question.
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