【作者】 王霖川； 李莉；

【Author】 WANG Linchuan;LI Li;Beijing Key Laboratory of Work Safety Intelligent Monitoring;School of Electronic Engineering, Beijing University of Posts and Telecommunications;

【机构】 安全生产智能监控北京市重点实验室； 北京邮电大学电子工程学院；

【摘要】 本文提出了一种工作于UHF频段的小型化、低剖面、三环形RFID标签天线。天线总尺寸为26×26×0.8mm~3(0.08×0.08×0.002λ~3),采用FR4基板(ε_r=4.4)。天线由三个开口环形结构组成,其中,外面的两个开口环的开口方向相差90度,内环与标签芯片相连,构成一个闭合环。与弯折偶极子形标签天线相比,本文所提出的三环形标签天线具有良好的3维全向辐射方向图,增益最大值与最小值仅相差5.8dB。更多还原

【Abstract】 A miniaturized, low-profile and 3-loop UHF RFID tag antenna is proposed in this paper, whose overall size is 26×26×0.8 mm~3(0.08×0.08×0.002λ~3) and the material of substrate is FR4(ε_r = 4.4). The antenna is composed of three open-loop elements. The open direction of one of the two outer loops is 90 degrees different from the other.The inner loop is composed a closed-loop by connecting with a tag chip. In comparison with meandered-dipole tag antennas, the gain pattern of the proposed 3-loop tag antenna is near-3 D omnidirectional, whose deviation in all directions is less than 5.8 dB.更多还原