基于EPC Gen2协议的UHF RFID有源电子标签设计

Design of an UHF RFID active tag based on EPC Gen2 protocol

提出了一种基于EPC Gen2协议的UHF RFID(Radio Frequency Identification)有源电子标签设计方法。标签硬件电路分为三个部分——反射电路、接收电路和基带控制电路。通过理论分析提出一种低误码率的反射电路设计方案,接收电路采用双通道正交解调方案,采用FPGA芯片EP1C3T100C6完成基带控制电路设计。利用读写器对标签进行测试,示波器、频谱仪和上位机程序所得结果均表明标签工作正常。

A kind of UHF RFID active tag design method hased on EPC Gen2 is presented in this paper. Tag＇s hardware circuit is made of three parts： reflex circuit, receiving circuit and baseband control circuit. By theoretically analyzing, a low bit-error-rate design proposal is presented for the reflex circuit. Two-channel quadrature demodulation program is adopted to design the receiving circuit. And an FPGA chip （EP1C3TI00C6） is adopted to design the baseband control circuit. Using a reader to test the tag, testing results of oscilloscope, frequency spectrograph and upper computer show that tag works well.