UHF RFID Reader Antenna for Near-Field and Far-Field Operations

被引：65
|
作者：
Shrestha, Bijaya [1 ]
Elsherbeni, Atef [2 ]
Ukkonen, Leena [1 ]
机构：
[1] Tampere Univ Technol, Rauma Res Unit, Dept Elect, Rauma 26100, Finland
[2] Univ Mississippi, Dept Elect Engn, University, MS 38677 USA
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2011年 / 10卷
基金：
芬兰科学院;
关键词：
Far-field; near-field; radio frequency identification (RFID); reader antenna; ultrahigh frequency (UHF);
D O I：
10.1109/LAWP.2011.2174603
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this letter, a radio frequency identification (RFID) reader antenna designed for near-field and far-field operation at the European ultrahigh frequency (UHF) band is presented. Segmented loop technique is implemented for near-field operation, whereas a patch antenna is included inside the loop for far-field operation. The fabricated antenna works from 864 to 873 MHz with reflection coefficient less than -10 dB, thus covering the European UHF RFID band. Its linearly polarized radiation pattern provides a 4-dBi gain. The reading capabilities of the antenna are up to 9 cm and 6 m for near-field and far-field applications, respectively.
引用
收藏
页码：1274 / 1277
页数：4
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