High Gain Coplanar UHF RFID Tag Antenna Using Inductively Coupled Feed for Metallic Applications

被引:0
作者
Salman, Karrar Naji [1 ]
Ismail, Alyani [1 ]
Saeedi, Tale [1 ]
机构
[1] Univ Putra Malaysia, Fac Engn, Dept Comp & Commun Syst, Upm Serdang 43400, Selangor, Malaysia
来源
2015 IEEE 12TH MALAYSIA INTERNATIONAL CONFERENCE ON COMMUNICATIONS (MICC) | 2015年
关键词
DESIGN;
D O I
暂无
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
In this design, a coplanar slim antenna had been proposed and designed for UHF RFID (860-960) MHz metallic objects. The slim antenna was presented with proximity coupled feeding, two symmetrical coplanar ground layers, and a transmission line fed by a U-shaped inductively coupled feed. Furthermore, the U-shaped inductive feeder consisted of two opposing symmetrical U-shaped structures to feed the top radiator of the antenna. The size of the antenna was 97.5 x 50 x 1.5 mm (3) over cap at 915 MHz. As a result, the peak gain for the antenna reached up to 5 dBi at 915 MHz. Furthermore, the bandwidth of the antenna was 24.875 MHz (900.125-925) MHz (the power reflection coefficient was lower than -3 dB), while the reading range reached up to 11 meters. Besides, the results obtained from the measurement displayed very good impedance matching due to the flexibility generated by the U-shaped inductive feeder. Moreover, the results retrieved exhibited very good agreement with the results obtained from the simulations.
引用
收藏
页码:77 / 81
页数:5
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