CAJ | 학술논문

针对低频磁通信系统通信距离短的问题，设计了一种基于磁耦合感应的无源应答器。该无源应答器由收发天线、电源模块、信号处理、信号放大4部分构成。采用低功耗电路和大功率发射的设计理念，当接收天线将感应到的磁能转换成交流电能，整流滤波电路把交流电转换成直流电，经过稳压电路降压后对系统供电，功率放大器将调制信号放大，放大信号经过发射天线发送至阅读器，阅读器能有效地接收远程信号。
침대저빈자통신계통통신거리단적문제，설계료일충기우자우합감응적무원응답기。해무원응답기유수발천선、전원모괴、신호처리、신호방대4부분구성。채용저공모전로화대공솔발사적설계이념，당접수천선장감응도적자능전환성교류전능，정류려파전로파교류전전환성직류전，경과은압전로강압후대계통공전，공솔방대기장조제신호방대，방대신호경과발사천선발송지열독기，열독기능유효지접수원정신호。
For the problem of short communication distance in the low-frequency magnetic communication system,a passive transponder is designed based on magnetic coupling induction.The design consists of antennas,power storage,signal pro-cessing and signal amplifier.The system adopts the idea of low-power circuits and high-power emission design,magnetic en-ergy is converted into AC electric by the receiving antenna.Rectifier and filter circuit converts AC power into DC power. The system is supplied by DC power after a step-down by voltage circuit.Modulation signal is amplified by the signal pro-cessing module.The amplified signal is sent to the reader through the transmitting antenna.Because of the high amplifier power,the reader can easily receive the remote signal.