Low-profile UHF RFID reader antenna with CP radiation and coupled feeding technique

被引：8
|
作者：
Huang, Guan-Long [1 ]
Sim, Chow-Yen-Desmond [2 ]
Lin, Chuan-Wei [2 ]
Gao, Ming-Jie [2 ]
机构：
[1] Natl Univ Singapore, Dept Elect & Comp Engn, Temasek Labs, Singapore 117411, Singapore
[2] Feng Chia Univ, Dept Elect Engn, Taichung, Taiwan
来源：
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING | 2016年 / 26卷 / 09期
关键词：
annular-ring patch; circular polarization; coupled feeding technique; RFID; UHF; PATCH ANTENNA; TAG ANTENNA; DESIGN;
D O I：
10.1002/mmce.21034
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A low profile annular-ring patch antenna with circularly polarized (CP) radiation for radio frequency identification (RFID) reader applications in the ultra-high frequency (UHF) band (922-928 MHz) is presented in this article. Perturbation method is applied by loading a pair of triangular open-notch into the outer circumference of ring patch, and good impedance matching can be determined by using the coupled feeding technique. The overall size of this proposed antenna is 150 mm x 150 mm x 10.4 mm. The measured results show desirable 10-dB impedance bandwidth and 3-dB axial ratio (AR) bandwidth of 3.5% (908-941 MHz) and 0.65% (922-928 MHz), respectively. Stable antenna peak gain and efficiency of 7.2 dBic and 87% are also exhibited, respectively.
引用
收藏
页码：819 / 828
页数：10
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