Dual-Printed-Dipoles Reader Antenna for UHF Near-Field RFID Applications
Dual-Printed-Dipoles Reader Antenna for UHF Near-Field RFID Applications
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DOI：
10.1109/lawp.2011.2121050
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发表时间：
2011-02
影响因子：
4.2
通讯作者：
Xiuping Li;Zijiang Yang
中科院分区：
文献类型：
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作者：
Xiuping Li;Zijiang Yang
在这封信中，一个双印刷偶极子阅读器天线，提出了一个超高频（UHF）近场射频识别（RFID）的应用。两个印刷偶极子组成一个回路，以提供同相电流性能。80 × 70 × 30 mm 3的小尺寸被证明是特殊的小尺寸和纯近场工业应用的要求。测得的阅读范围为37 mm（使用Impinj UHF按钮），无阅读空值。在电压驻波比小于1.5的条件下，实测带宽为220 MHz（750-970 MHz），覆盖了欧洲和FFC标准，与仿真结果吻合较好。此外，该天线具有小于-20 dBi的低远场增益，可应用于纯近场RFID系统。
In this letter, a dual-printed-dipoles reader antenna is proposed for ultrahigh frequency (UHF) near-field radio frequency identification (RFID) applications. The two printed dipoles compose a loop to provide in-phase current performance. A small dimension of 80 × 70 × 30 mm3 is demonstrated for special small-size and pure near-field industry application requirement. The measured reading range is 37 mm (with Impinj UHF button) without reading nulls. The measured bandwidth is 220 MHz (750-970 MHz) under the condition of voltage standing wave ratio (VSWR) less than 1.5, which covers the Europe and FFC standards and agrees well with the simulated results. In addition, the antenna has a low far-field gain less than -20 dBi, which can be applied in pure near-field RFID systems.