Circularly Polarized Circular Microstrip RFID Tag Antenna

被引：0
|
作者：
Tseng, Yen-Ming [1 ]
Kuo, Shang-Huang [1 ]
Chen, Horng-Dean [1 ]
Sim, Chow-Yen-Desmond
机构：
[1] Natl Kaohsiung Normal Univ, Dept Optoelect & Commun Engn, Kaohsiung, Taiwan
来源：
2012 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC 2012) | 2012年
关键词：
Circular polarization; microstrip antenna; radio frequency identification (RFID); tag antenna;
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：
A compact circularly polarized circular microstrip tag antenna designed for RFID UHF band is presented. A cross slot of unequal arm lengths embedded in a circular patch is used to achieve compact CP operation. By choosing the proper lengths of two short-circuited arc microstrip lines and its coupling distance, good complex impedance matching can be obtained. The measured 10-dB return-loss bandwidth of the tag antenna is 40 MHz (901-941 MHz), while its 3-dB axial-ratio bandwidth is 6 MHz (912-918 MHz). Further experiment shows that the tag antenna can provide better reading range when mounted on a metallic surface.
引用
收藏
页码：1142 / 1144
页数：3
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