电容耦合馈电方式的宽带抗金属标签天线设计  

Broadband capacitively coupled anti-metal tag antenna for RFID

作　　者：谢继鹏[1] 

机构地区：[1]南京邮电大学电子科学与工程学院,南京210003

出　　处：《信息化研究》2014年第1期51-54,共4页INFORMATIZATION RESEARCH

摘　　要：本研究提出一种新型的超高频抗金属无线射频识别技术（RadioFrequencyIdentification，RFID）标签天线，该天线集成在厚度仅为0．8mm的介质板上，通过电容耦合馈电技术扩展带宽，将贴片弯曲成4个半波长的辐射单元，使得所有辐射单元的表面电流同相，由此可以增强天线增益并提高天线读取距离。最后利用HFSS软件对天线进行仿真分析，天线的回波损耗（小于-10dB）能够覆盖902-928MHz的北关超高频射频识别系统。A novel anti-metal antenna for ultra-high frequency （UHF） band radio frequency identification （RFID） is presented in this letter. The antenna is fabricated on a very thin substrate with thickness of 0.8 mm. The capacitively coupled feeding technique is used to perform a broadband operation. Bending a long patch into four half-wavelength radiating elements makes the surface currents of all radiating elements in phase, thus a- chieving an enhanced antenna gain and a good reading range performance. Finally, the antenna is analyzed with HFSS and the Return Loss （less than-10 dB） cover the 902-908 MHz UHF RFID systems in North America.

关 键 词：抗金属 无线射频识别技术 电容耦合 回波损耗 

分 类 号：TN820.1[电子电信—信息与通信工程]