A Broadband UHF Near-Field RFID Antenna
A Broadband UHF Near-Field RFID Antenna
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DOI：
10.1109/tap.2010.2078432
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发表时间：
2010-09
影响因子：
5.7
通讯作者：
X. Qing;C. K. Goh;Zhi Ning Chen
中科院分区：
文献类型：
--
作者：
X. Qing;C. K. Goh;Zhi Ning Chen
提出了一种用于超高频 (UHF) 近场射频识别 (RFID) 应用的宽带分段环形天线。使用分段线，即使环路的周长大于两个工作波长，沿环路的电流分布也保持同相，使得所提出的天线在天线的近场区域中产生强且均匀的磁场分布。天线原型印刷在一块 FR4 基板上，整体尺寸为 ，在 840-960 MHz 的整个 UHF RFID 频段上实现了具有良好阻抗匹配和均匀磁场分布的大询问区域。
A broadband segmented loop antenna is presented for ultra high frequency (UHF) near-field radio frequency identification (RFID) applications. Using a segmented line, the current distribution along the loop is kept in phase even though the perimeter of the loop is more than two operating wavelengths so that the proposed antenna generates strong and even magnetic field distribution in the near-field zone of the antenna. The antenna prototype, printed onto a piece of FR4 substrate, with an overall size of , achieves a large interrogation zone of with good impedance matching and uniform magnetic field distribution over the entire UHF RFID band of 840-960 MHz.