An UHF Reader Antenna Design for Near-field RFID Applications

被引：0
|
作者：
Liu, Hsien-Wen [1 ]
Yang, Chang-Fa [1 ]
Weng, Chung-Hsun [1 ]
Kuo, Huang-Lin [1 ]
Wu, Kuo-Hsien [1 ]
Lin, Yu-Shu [1 ]
机构：
[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei, Taiwan
来源：
APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5 | 2009年
关键词：
RFID; inductive coupling; capacitive coupling; UHF reader antenna; near-field;
D O I：
暂无
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 paper, two UHF reader antennas based respectively on inductive and capacitive couplings for near-field RFID applications are presented. To identify item-level tags with inductive coupling, a loop-type antenna is developed to have strong magnetic fields in near zone. As for the capacitive coupling, a near-field focusing circular patch array fed by a network with various input phases for radiation elements is proposed to enhance the electric field in near zone. Thus, dipole-like tags can be recognized with the capacitive coupling. Measurements show that those antennas operating with commercial readers provide good performance of tag identifications for near-field RFID applications with inductive and capacitive couplings, respectively.
引用
收藏
页码：2394 / 2397
页数：4
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