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首页> 外文期刊>IEEE Journal of Radio Frequency Identification >Design of a Wide Planar Waveguide Antenna for UHF Near-Field RFID Reader With High Reading Rate
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Design of a Wide Planar Waveguide Antenna for UHF Near-Field RFID Reader With High Reading Rate

机译：高读数近场RFID读卡器宽平面波导天线的设计

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摘要

UHF near-field RFID reader antenna based on leaky waveguide is proposed and the performance is evaluated using numerical simulation and experiment. In order to suppress the standing wave along transverse direction, a pair of notches is placed on the transverse edge of the mesh layer of the planar waveguide. Diversity operation by switching impedance of the end terminal of the planar waveguide antenna is also introduced to suppress the standing wave effect along longitudinal direction. Numerical simulation and experiment show that the near-field null lines parallel to the longitudinal direction is almost removed by the presence of the notches and the distribution of the field strength becomes almost uniform because of the utilization of the switching diversity. It is demonstrated that the reading performance of the commercial RFID tags is greatly improved by using the proposed RFID reader antenna with the diversity operation of termination impedance.
机译：提出了基于泄漏波导的UHF近场RFID读取器天线，使用数值模拟和实验评估性能。为了沿横向抑制驻波，将一对凹口放置在平面波导的网格层的横向边缘上。还引入了通过切换平面波导天线的端部端子的阻抗的分集操作，以沿纵向抑制驻波效果。数值模拟和实验表明，由于存在开关分集，几乎通过凹口存在平行于纵向的近场零点几乎除去了凹口的分布变得几乎是均匀的。结果证明，通过使用具有终止阻抗的分集操作的提出的RFID读取器天线，大大提高了商业RFID标签的读取性能。

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