一种紧凑的射频识别标签天线设计

A Compact RFID Tag Antenna Design

提出了一款紧凑的用于超高频射频识别系统的标签天线。天线由一个弯折的偶极子天线网络和一个U形寄生元件构成。通过在偶极子和寄生元件中利用感性耦合来使天线进一步小型为48×26.3mm2。提出的天线具有较小的尺寸、较宽的带宽和良好的辐射性能。在915MH0dBi,最大阅读距离为10.16m。制作了相应的实物天线,仿真和测试结果说明所设计的天线满足用要求。

Abstract： In this paper,a compact tag antenna for UHF RFID systems is proposed. The proposed antenna consists of a meandered dipole, a T-matching network and a U shaped parasitic element. The tag antenna is miniaturized by utilizing inductive coupling between the meandered dipole and parasitic element. The overall dimension of the proposed tag antenna is 48 ×26.3mm^2. The proposed tag antenna has advantages of small size, wide bandwide and good radia- tion performance. It has a gain of 1.80dBi and a maximum reading distance of 10.16m at 915MHz. The proposed tag antenna has been fabricated. Both simulated and measured results show that the designed antenna is satisfied with RFID application.