南京航空航天大学学报2017，Vol.49Issue(6)：892-896,5.DOI:10.16356/j.1005-2615.2017.06.020
基于电容加载的UHF-RFID近场长天线设计
UHF-RFID Near-Field Long Antenna Based on Capacitance Loading
郑景明 1刘文娟 2杨壮观 3刘雪松 3张启帆 1杨阳 1何小祥1
作者信息
- 1. 南京航空航天大学电子信息工程学院 ,南京 ,210016
- 2. 国网辽宁省电力有限公司 ,沈阳 ,110004
- 3. 国网辽宁省电力有限公司信息通信分公司 ,沈阳 ,110004
- 折叠
摘要
Abstract
The spatial span of the current phase distribution of near-field long antenna is large .To solve the difficult problem ,an ultra-high frequency (UHF) near-field long antenna based on capacitance load-ing is designed in this paper .By dividing microstrip transmission line of 250 mm in length into several segments and loading capacitances of 1 .6 pF in each 48 .8 mm of the patch ,the phase of electric current can be compensated .Metal branches and resistance are adopted in port to realize impedance matching . Simulation and research show that the return loss is below -10 dB between 918—933 M Hz ,the max difference of electric field is only 3 .2 dB in 300 mm above the antenna ,and the maximum difference of read distances in different positions is below 95 mm .The results show that the antenna is of good near electric field uniformity .The antenna is also measured in the radio frequency identification (RFID) sys-tem and the practicality is verified in near field application .关键词
超高频/近场长天线/分段/加载电容/均匀性Key words
ultra-high frequency (UHF)/near-field long antenna/segment/loading capacitance/uni-formity分类
信息技术与安全科学引用本文复制引用
郑景明,刘文娟,杨壮观,刘雪松,张启帆,杨阳,何小祥..基于电容加载的UHF-RFID近场长天线设计[J].南京航空航天大学学报,2017,49(6):892-896,5.
