基于PCRAM的射频标签模拟前端关键电路设计  

Design of Key Analog Front-End Circuit for UHF Tags Based on PCRAM

作　　者：王兆敏[1,2] 蔡道林[1] 陈后鹏[1] 宋志棠[1] 傅忠谦[2] 

机构地区：[1]中国科学院上海微系统与信息技术研究所信息功能材料国家重点实验室纳米技术研究室,上海200050 [2]中国科学技术大学电子科学与技术系,合肥230027

出　　处：《微电子学》2012年第5期651-654,共4页Microelectronics

基　　金：国家重点基础研究发展计划基金资助项目(2010CB934300;2011CBA00602;2011CB932800);国家集成电路重大专项(2009ZX02023-003);国家自然科学基金资助项目(60906004;60906003;61006087;61076121;61176122);上海市科委基金资助项目(1052nm07000)

摘　　要：基于相变存储器,对无源超高频电子标签模拟前端四个关键电路进行低功耗设计。整流电路采用9级电荷泵,结合储能电容和过压保护电路,得到了很好的整流效果。上电复位电路在箝位电路的基础上利用简单的缓冲器及异或逻辑,得到性能良好的矩形脉冲复位信号PORB,通过PMOS栅交叉耦合,极大地降低了电路静态电流(<1nA)。在基准电源电路中,设计了双极晶体管和MOS晶体管,兼具功耗低和准确性高的优势。稳压电路采用串联稳压结构,电源抑制比达到28.2dB。仿真结果显示,功耗达到nA级,输出直流电压为3V。Key analog front-end circuits in passive UHF RFID tag were designed for low-power based on PCRAM.9-stage charge-pump,storage capacitor and overvoltage protection circuit were used in the rectifier,and excellent results were obtained.In power-on-reset（POR） circuit,simple buffer and XOR circuits were used based on clamping circuit to achieve good rectangular pulse reset signal PORB.Quiescent current in POR was reduced to less than 1 nA by using PMOS gate cross-coupled circuit.In voltage reference source,both bipolar junction transistor and MOS transistor were designed to achieve low power and high accuracy.Regulator with serial structure was adopted to achieve a PSSR of 28.2 dB.Simulation results showed that the circuit could output DC voltage of 3 V with a power consumption down to nA.

关 键 词：相变存储器 电子标签 模拟前端 低功耗 

分 类 号：TN432[电子电信—微电子学与固体电子学]