摘要
为解决目前有源RFID标签的能耗问题,提出了基于射频触发唤醒技术(Radio wake-up)的低功耗解决方案。在传统有源RFID标签的基础上增加射频唤醒电路,阅读器首先发送一个唤醒信号,将附近的标签从休眠状态唤醒,然后进行数据通信。这使得有源标签大部分时间均处于低功耗的休眠状态,该方式可大幅减少射频通信模块的功耗,延长有源标签的寿命。仿真结果表明,该电路在-45.2 dBm输入功率下可唤醒标签,唤醒距离为30m,且唤醒电路的功耗仅为4.11μW(3V,1.37μA),能够满足大部分应用需求。
This paper presents an implementation of radio-triggered circuit to decrease energy consumption of active RFID tag. A radio-triggered circuit is added to a traditional active tag. Active tag stays in sleep mode until Reader sends Radio Wake-up signal. Active Tag can save a lot of energy then prolong its lifespan by adopting this working mode. The simulating results demonstrate that the sensitivity of the circuit can reach -45. 2 dBm, which means that the reader can wake up tags about 30 meters away. The energy consumption of this circuit is only 4. 11 μW. These features can meet the requirements of many applications.
出处
《电子科技》
2013年第10期151-155,共5页
Electronic Science and Technology
基金
河南省教育厅科学技术研究重点基金资助项目(12B510020)资助
关键词
射频识别
射频唤醒
低功耗
有源标签
radio frequency identification（RFID）
radio wake-up
low power consumption
active tag
