Design of A Broadband Circularly Polarized UHF RFID Tag Antenna for Metallic Objects

被引：0
|
作者：
Qian, Xin [1 ]
Zhang, Guang-qiu [1 ]
Lei, Xue [1 ]
Hou, Lei [1 ]
Ma, Sheng-hua [1 ]
机构：
[1] Zhengzhou Inst Informat Sci & Technol, Dept Electromagnet Field & Microwave, Zhengzhou 450001, Peoples R China
来源：
2015 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC), VOLS 1-3 | 2015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：
A novel UHF RFID tag antenna with broadband and circularly polarized feature has been proposed for metallic object application. Double-point orthogonal coupling feed technology utilizes two microstrips with the differ of a quarter-wavelength and loading cross-slot on the quasi-square radiation patch. Finally the tag antenna achieves 38 MHz and 16.2 MHz for the 3dB impedance bandwidth (898MHz-936MHz), the 3dB axial ratio bandwidth (913.8MHz-930MHz) respectively. Obviously, the result has covered the upper band (920MHz-925MHz) of local china RFID technology standard and the proposed tag antenna can keep stable read-write performance when mounted on different size of metal surface.
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页数：3
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