为降低射频识别( RFID) 系统中标签的成本，提出了基于I 型缝隙谐振器的印刷无芯片标签． 通过在导电材料上增加或者缺失不同长度、不同宽度的I 型缝隙进行信息编码，得到各种编码的标签，然后利用标签的雷达散射截面( RCS) 提取标签信息． 在37. 0mm × 20. 5mm 的F4BM-1 /2 基板上实现了12bit 的无芯片标签． 仿真和实验测试结果表明: 标签上的每个谐振器对应频谱上的一个谐振频率，改变缝隙的长度可大范围地改变谐振频率，改变缝隙的宽度只轻微地改变谐振频率; 减小相邻缝隙之间的间距或缝隙的宽度可以提高编码容量．

In order to decrease the cost of RFID ( Radio Frequency Identification Devices) tags,a printable compact chipless tag on the basis of I-shaped slot resonators is proposed.By adding or removing the I-shaped slots of different length and width on conductive materials to perform information coding,different coded tags are obtained.Then,tag information is acquired from the radar cross-section ( RCS) of tags.Finally,the chipless tags of twelvebit code capacity are achieved on a 37.0 mm × 20.5 mm F4BM-1 /2 substrate.Simulation and experimental results demonstrate that ( 1) every slot resonator has its corresponding resonant frequency; ( 2) adjusting the length of slots can change the resonant frequency by a large margin,while adjusting the width can change it slightly; and ( 3) decreasing the space of adjacent slots or the width of slots can greatly improve coding capacity.