一种适用于射频电子标签的低电压低功耗振荡器  

A Low Voltage Low Power Oscillator Suitable for RFID Transponder

作　　者：韩益锋[1] 李强[1] 闵昊[1] 谢文录 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室 [2]上海华虹集成电路有限责任公司,上海201203

出　　处：《Journal of Semiconductors》2005年第4期775-780,共6页半导体学报（英文版）

基　　金：国家高技术研究发展计划资助项目(批准号:2003AA1Z1280)~~

摘　　要：提出了一种适合射频电子标签应用的振荡器设计方法.针对低电压低功耗的要求,选择了比较简单的振荡器结构,通过调节电流的方法来调节振荡器的输出频率.输出电流与电源无关的偏置电路设计保证了振荡器输出频率的稳定,低功耗的二进制权电流电路提供了很小的寄生参数、较高的电流精度和很小的芯片面积.芯片在Chartered0.35μmCMOS工艺流片,电源电压为1.2～2V,环形振荡器消耗的平均电流约为6.5μA.An oscillator design method is proposed,which is suitable for RFID transponder.A simple architecture is selected for the requirement of low voltage and low power.The output frequency is tuned by means of current steering technique.The stability of the oscillator output frequency is guaranteed by the design of the supply-independent biasing circuit.Low power binary-weighted current sources provide small parasitic parameters, good current splitting precision,and small chip area.The chip is implemented in the 0.35μm CMOS process of chartered.The supply voltage ranges from 1.2 to 2V and the average consumed current of the ring oscillator is about 6.5μA.

关 键 词：射频识别 电子标签 振荡器 低电压 低功耗 

分 类 号：TN752[电子电信—电路与系统]