基于开口环谐振器的小型化射频识别标签天线

为了克服标签天线小型化技术中结构复杂,不易于与标签芯片匹配等问题,设计了一种基于开口环谐振器(split ring resonator,SRR)的天线结构。为了实现天线与芯片之间的匹配,该天线采用T型馈电网络。仿真结果表明:该天线具有较好的S11特性。天线的工作频段也包含中国UHF频段的920～925 MHz。设计的天线尺寸约为30mm×25mm,结构简单,很好地实现了天线小型化,并用矢量网络分析仪对天线的阻抗特性进行测试,且测试结果与仿真结果基本吻合。

Miniaturized RFID Tag Antenna Based on Split Ring Resonator

A UHF tag antenna based on split ring resonator(SSR) was proposed in this paper.The antenna was designed for the purpose of reducing the size of itself.A T-match network was used to make it have a good match with the RFID chip.The simulation results showed that the RFID tag antenna had a good S11 characteristic.The band of the antenna contained the band of the UHF(920~925MHz).The dimension of the antenna was 30 mm×25 mm.Moreover,it had a simple structure and miniaturized.The antenna designed in this paper was fabricated.Also,the impedance of the antenna was measured by vector network analyzer.The measurement and the simulation are basically consistent.