A Universal UHF RFID Reader Antenna
A Universal UHF RFID Reader Antenna
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DOI：
10.1109/tmtt.2009.2017290
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发表时间：
2009-05-01
影响因子：
4.3
通讯作者：
Chung, Hang Leong
中科院分区：
文献类型：
--
作者：
Chen, Zhi Ning;Qing, Xianming;Chung, Hang Leong
提出了一种用于通用超高频 (UHF) 射频识别 (RFID) 应用的宽带圆极化贴片天线。该天线由两个截角贴片和一条带有开路端接的悬挂微带线组成。主贴片由四个探头馈电，这些探头依次连接到悬挂的微带馈线。测量结果表明，该天线在 818-964 MHz 的 UHF 频段或 16.4% 上实现了 -15 dB 的回波损耗、8.3 dBic 的增益、3 dB 的轴比 (AR) 和 75 度的 3 dB AR 波束宽度。因此，所提出的天线对于全球 840-960 MHz UHF 频段的 UHF RFID 应用是通用的。此外，还进行了参数研究，以促进工程师的设计和优化过程。
A broadband circularly polarized patch antenna is proposed for universal ultra-high-frequency (UHF) RF identification (RFID) applications. The antenna is composed of two corner-truncated patches and a suspended microstrip line with open-circuited termination. The main patch is fed by four probes which are sequentially connected to the suspended microstrip feed line. The measurement shows that the antenna achieves a return loss of -15 dB, gain of 8.3 dBic, axial ratio (AR) of 3 dB, and 3-dB AR beamwidth of 75 degrees over the UHF band of 818-964 MHz or 16.4%. Therefore, the proposed antenna is universal for UHF RFID applications worldwide at the UHF band of 840-960 MHz. In addition, a parametric study is conducted to facilitate the design and optimization processes for engineers.