| 摘要 |
An RFID(Radio Frequency Identification) transceiving system is provided to perceive channels used by another system, and to process frequency hopping by avoiding a channel from which interference occurs, thereby stably carrying out communication. Receiving mixer(142,146) process receiving signals into baseband signals. Transmission mixer(192,196) process transmission signals into RF(Radio Frequency) signals. A PLL(Phase Locked Loop) circuit(200) supplies oscillating frequency signals to the receiving mixer and the transmission mixer. A controller(160) perceives RFID channels used in another system by processing the baseband receiving signals, combines the transmission signals by generating interference channel information, and processes frequency hopping by controlling the PLL circuit. |
