适用于RFID芯片的CMOS振荡器  

A CMOS Oscillator Used in RFID

作　　者：徐海峰[1] 王春锴[1] 邵丙铣[1] 

机构地区：[1]复旦大学国家微电子材料与元器件微分析中心,上海200433

出　　处：《微电子学与计算机》2008年第4期124-127,共4页Microelectronics & Computer

摘　　要：在分析传统环形振荡器频率稳定性问题的基础上,提出了解决问题的方法,并相应设计了一种适合于RFID芯片的振荡器,大大提高了频率的稳定性.用0.5μm的CMOS模型仿真,验证了该振荡器在低于2MHz的频率下,其频率漂移小于0.5%/V,-40～100℃范围内温度系数为180ppm.Based on analyzing the principle the traditional ring oscillator and frequency stability problem, this paper proposes the solution for the problem and designs a novel oscillator used in RFID. The oscillator can largely improve the frequency stability. Using 0.5μm CMOS model, the oscillator was simulated by Hspiee. The measurement indicates that the new oscillator＇ s frequency shift is less than one point five percent per voltage when the frequency is below 2MHz and the temperature coefficient is 180ppm from - 40℃ to 100℃.

关 键 词：模拟电路 振荡器 频率稳定性 温度系数 

分 类 号：TN4[电子电信—微电子学与固体电子学]