射频自动目标识别技术

Technology of RF automatic object identification

射频自动目标识别技术是利用微波及收发天线实现对目标的远距离自动识别 ,文中对多通道零中频检测技术、无源反射调制技术及射频供电技术进行了分析和实验研究 ,并设计研制出了一套射频自动识别系统 .该系统只用单一频率即可完成收发功能 ,具有节约频率资源的特点 .所研制的射频识别系统工作于91 5MHz ,射频功率 1 .5W ,射频卡为平板振子结构 ,作用距离 0～ 1 0m ,数据 1 0kb s ,具有计算机控制自动显示 。

The technology of radio frequency automatic object identification is discussed. It utilizes microwave and transmitter/receiver antenna to realize automatic identification of far distance object. The technology includes multichannel homodyne, reflection modulating without radio frequency source and beam powered by radio frequency energy. A system of radio frequency automatic object identification is developed. The transmitter/receiver of the automatic object identification system operates at the same frequency with the advantage of sparing frequency resource. It operates at 915 MHz with 1.5W output power. The RF card adopts the structure of planar dipole. The maximum identification distance is up to 10 meters,the data rate reaches 10 kb/s.It can display automatically the data controlled by computer and print the report forms.