UHF RFID读写器零中频解调方式的研究与实现

Research and Realization of Zero-IF Demodulator Technique for UHF RFID Reader

在对UHF RFID读写器工作原理进行分析的基础上,介绍一种工作在UHF频段下的读写器的射频接口电路,并确定读写器的解调方式,重点对正交零中频解调方式进行研究,并给出读写器的实现方案。

Based on the research work theory for the UHF RFID reader, a new RF interface circuit of reader is introduced. The demodulation techique for reader is selected, and the research focuses mainly on zero-IF quadrature demodulator, gives its solution.