| 摘要 |
An RFID(Radio Frequency Identification) transceiving system is provided to perform differential processing of signals received through various receiving angles, improve a recognition rate of a signal by transmitting a transmitting signal through a circular polarization component, and maintain communication stably. A signal separating unit(110) separates the received signal into an I(In-phase) signal and a Q(Quadrature-phase) signal by performing phase conversion of a received signal having phase difference. A first mixer unit(140) synthesizes the I signal to generate an I+ signal and an I- signal having predetermined phase difference. A second mixer unit(145) synthesizes the Q signal to generate a Q+ signal and a Q- signal having predetermined phase difference. A switch unit(115,120) switches the I signal to the first mixer unit or switches the Q signal to the second mixer unit.
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