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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Dual-band circularly polarized flat antenna with plano convex and concave slots for RFID readers
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Dual-band circularly polarized flat antenna with plano convex and concave slots for RFID readers

机译：具有平面凹凸槽的双频段圆极化扁平天线，用于RFID阅读器

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摘要

This article has proposed a circularly polarized dual-band antenna with unidirectionalrnpattern operating at the bandwidth frequencies of 920–925 MHz and 2.40–2.48 GHzrnfor radiofrequency identification (RFID) readers. The proposed antenna structure isrnof a radiating patch with a single feeder and two pairs of plano convex and concavernslots. This work has innovated and utilized the convex and concave slotting techniquernto generate the circular polarization. The simulated results showed that therndual-band antenna is of circular polarization (CP) and unidirectional radiation patternrnwith the 3 dB axial ratio and the respective gains of 1.31 and 1.36 dBic for the experimentalrnlower and upper bandwidth frequencies. An antenna prototype wasrnsubsequently fabricated and tests performed. The simulated and measured results arernin good agreement, rendering the proposed dual-band antenna with plano convex andrnconcave slots suitably applicable to the ultrahigh frequency and microwave RFIDrnreaders.
机译：本文提出了一种单向模式的圆极化双频天线，其工作频率为920-925 MHz和2.40-2.48 GHzrn，用于射频识别（RFID）阅读器。所提出的天线结构是具有单个馈线和两对平凸凹面槽的辐射贴片。这项工作已经创新并利用了凹凸开槽技术来产生圆极化。仿真结果表明，双频天线为圆极化（CP）和单向辐射方向图，轴向比为3 dB，实验的低，高带宽频率分别具有1.31和1.36 dBic的增益。随后制造了天线原型并进行了测试。仿真结果与实测结果吻合良好，使得所提出的双凸天线具有平凸凹凹槽，适用于超高频和微波RFID读卡器。

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