摘要
基于无源射频识别技术原理和天线散射理论,导出了不同负载情况下的雷达截面计算方法,并结合雷达截面和电磁传播环境分析了无源射频识别系统的识别距离.通过测量标签天线不同负载情况下的反向散射功率,再结合该计算方法,从而得出雷达截面.理论分析与实验测量结果保持一致.研究结果对优化无源射频识别系统的标签性能有益.
Based on the theory of passive RFID technology and antenna scattering, some computation methods for radar cross-section of tag antennas with different loads are derived, and by integrating the radar cross-section with electromagnetic propagation environment, the identification range of passive radio frequency identification is theoretically analyzed. Furthermore, by measuring backscattered power in the case of different loads, and then combined with the calculating methods, radar crosssection of the tag is also found. Theoretical analysis results are found to be in good agreement with experimental data. The results obtained are useful for optimizing tag performance in passive RFID systems.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第7期5126-5132,共7页
Acta Physica Sinica
基金
国家高技术研究发展计划(863)(批准号:2006AA04A104)
国家自然科学基金(批准号:50677014
60876022)资助的课题~~
关键词
射频识别
天线
雷达截面
识别距离
radio frequency identification, antenna, radar cross section, identification range
