Design and Optimization of Carrier Suppression Circuit for UHF RFID Reader Applications
In this paper,a new design is proposed to optimize 902 MHz-928MHz UHF RFID reader systems.With coupler RCP890A05,captured TX Signal after being attenuated and Reversed-Phase,is superimposed on leakage signal,at best,two LO signals will offset each other.When only using a circulator or directional coupler,isolation is always insufficient,then TX-to-RX leakage signal lead to saturation of the low noise amplifier or demodulator.This scheme adopts relatively simple circuit design; on one hand it will not increase the cost and circuit complexity,on the other hand reader performance is significantly improved,and more than 60-70dB isolation is acquired.
You Bin Quliang Yu Mingzhu Zhou Xiaohong Zhang
Key Laboratory of RF Circuits and Systems,Ministry of Education Hangzhou Dianzi University,Hangzhou 310018,China
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
1075-1079
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）