THE CANCELING FEEDBACK LOOP SOLVING RF FRONT-ENDS LEAKAGE FOR PASSIVE UHF RFID READER

摘要：

To obtain long communicating distance and enhance sensitivity of receiver, the canceling feedback loop is proposed for canceling carrier in the passive Ultra High Frequency (UHF) Radio Frequency Identification (RFID) reader.The fundamental concept of the proposed method is that the wave of the same amplitude and anti phase of the carrier is created to cancel it based on radar theory.And the phase noise of leakage is analyzed in the receiver.Simulating verification using the canceling feedback loop at 915MHz is also performed to prove the superiority of solving leakage problem comparing with traditional methods.And the result of simulation is SNR (Signal Noise Ratio) of 10 dB enhancement when the communicating range is 5 meters between tags and readers.

关键词： Canceling feedback loop carrier simulation radio frequency identification (RFID) ultra high frequency (UHF)

作者: LIN JINGLI YIN LIN CAI YIJU JIAN SHENGQI FANG HANFANG

作者单位: School of Electrical and information Engineering,Xihua University,Chengdu Sichuan 610039,China Sichu School of Electrical and information Engineering,Xihua University,Chengdu Sichuan 610039,China School of Automation,Harbin Engineering University,Harbin Heilongjiang 150000,China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Computer Technology and Development(2011第三届计算机技术与发展国际会议 ICCTD2011)

会议地点: 成都

会议语种:英文

页码: 1388-1392

在线出版日期: 2011-11-25（万方平台首次上网日期，不代表论文的发表时间）