UHF RFID频率合成器及其快速控制器设计

摘要

With the high demand of high quality local oscillator signal of the RFID system,a design method of high stability and low phase noise UHF RFID frequency synthesizer is proposed based on the fundamental principle of dual-mode divided PLL frequency synthesizer. More emphasis is focused on the analysis and simulation of the circuit parameters of the system ,and designing a FPGA-based swift controller for the parameter configuration. The test results coincides basically with that of the simulation,and this frequency synthesizer as well as its controller meets the application requirements of the UHF RFID system.%针对射频识别(RFID)系统中对本振信号的高质量要求,基于双模分频锁相频率合成的基本原理,提出了一种高稳定度低相噪的UHF波段RFID频率合成器的设计方法,着重对系统的电路参数进行了分析和仿真,并设计了基于FPGA的快速控制器用于参数配置.测试结果与仿真结果基本一致,该频率合成器及其控制器达到了UHF射频识别的应用要求.