中文摘要：

为使阅读器在有限功率输出的情况下识别距离远和覆盖区域广,提出了一种新的天线设计方案,即采用相控阵天线实现阅读器空间区域的波束扫描,天线单元辐射贴片与地平面开槽,阵元尺寸减小51%左右,进而减小了天线阵列总尺寸.实际测量结果与仿真分析吻合,该相控阵天线可以工作在902-928MHz,最大增益为16.05dBi,主波束扫描范围达到±50%,可以有效地扩大阅读器的识别区域.

英文摘要：

In order to have a far identification distance and a wide working range under the limited power output of RFID reader, a novel design scheme of antenna is presented. It utilizes phased-array antenna to achieve the beam scanning. By means of cutting narrow slots at the radiation patch and the ground plane, around 51% reduction of area is obtained. The design of miniaturization of antenna element reduces array total size. The measured results fit the simulation analysis. The presented antenna operates at 902-928 MHz, the peak gain is 16.05 dBi and the main beam direction can be switched between the angles of ±50%, the identification area is expanded effectively.