Dual-band Circularly Polarized Antenna for RFID Reader Applications

被引：0
|
作者：
Lin, Shin-Chiang [1 ]
Huang, Ting-Jui
Hsu, Heng-Tung
机构：
[1] Yuan Ze Univ, Dept Commun Engn, Chungli 320, Taiwan
来源：
2012 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM (APSURSI) | 2012年
关键词：
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：
This paper presents a novel design of dual-band and circularly-polarized antenna for RFID reader applications. Aperture-coupled ring radiators at 900MHz and 2.4GHz were adopted for dual-band operation. The coupling apertures were arranged orthogonally with proper phase offset to achieve circular polarization (CP) at both bands. The fabricated prototype exhibited good impedance bandwidth covering both UHF (902MHz similar to 928MHz) and microwave (2.4GHz similar to 2.5GHz) bands. Additionally, an axial ratio of less than 3 dB with better than 5dBi gain was achieved at both bands.
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页数：2
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