无源RFID系统发射自干扰对消技术研究  

A Study on Self-jammer Cancellation in Passive RFID System

作　　者：何方勇[1] 杨柳[1] 严浩[1] 

机构地区：[1]深圳市远望谷信息技术股份有限公司,广东深圳518000

出　　处：《现代雷达》2013年第5期67-71,75,共6页Modern Radar

摘　　要：提出了一种"载波相位前向跟踪"以及"干扰包络后向跟踪"相结合的"发射自干扰"对消技术的设计方法。在无源RFID系统中,该方法可以实时、动态地消除发射通道泄漏到接收通道的自干扰信号,提高系统的接收灵敏度。文中分析了无源RFID系统中"发射自干扰"产生的原理、系统射频参数、以及动态消除技术实现等方面的内容。A design method of self-jammer cancellation based on front phase-track for carrier and back envelope-track for interfer- ence is proposed in this paper. In passive RFID system, the self-jammer could be cancelled by using this method, which is real- time and dynamic. At the same time, the receiver sensitivity of system is greatly improved. This paper puts emphasis on theory of self-jammer, RF parameters, realization of dynamic self-jammer cancellation, and so on.

关 键 词：射频识别 发射自干扰 正交调制 相位跟踪 包络跟踪 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术]