摘要
通过对UHFRFID系统的研究,提出了一种基于高中频结构的超高频RFID(射频识别)阅读器的接收机结构,并进行了详细的链路预算,同时论证了高中频接收机具有较强的抗阻塞能力,相对零中频结构避免了同频干扰,同时与欠采样技术相结合,具有更高的灵敏度和更优越的性能.
By analyzing the feasibility of high intermediate frequency structure in RFID （radiofrequencyidentification, the authors proposed a kind of ultra-high frequency RFID receiver structure based on high intermediate frequency structure, and made a detailed analysis of the budget. The complexity and cost of this topology structure are lower than super heterodyne structure, which avoids the same frequency interference which usually occurs in zero-IF receiver. Besides, by combination with the less sampling technology, this structure possesses higher sensitivity and better performance.
出处
《应用科技》
CAS
2009年第7期20-22,27,共4页
Applied Science and Technology
关键词
高中频
接收机
RFID
零中频接收机
high intermediate frequency
receiver
RFID
zero-IF receiver
UHF
