应用于全数字锁相环的3.44～5.25GHz,FOM值为182dBc/Hz的低功耗数控振荡器设计  

A 3.44～5.25 GHz Digitally Controlled Oscillator with 182 dBc/Hz FOM for ADPLL Application

作　　者：牛杨杨[1] 李巍[1] 李宁[1] 任俊彦[1] 

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,上海201203

出　　处：《复旦学报（自然科学版）》2013年第4期512-516,共5页Journal of Fudan University：Natural Science

基　　金：国家自然科学基金(61176029);国家十二五预研课题(513***)资助项目

摘　　要：设计了一个应用于全数字锁相环的宽带电感电容数控振荡器(DCO).通过设计粗调谐电容阵列、中等调谐电容阵列和精细调谐电容阵列,实现了宽的调谐范围.采用NMOS和PMOS互补型交叉耦合电路,实现了低功耗、高优值(FOM)的振荡器.设计采用TSMC 0.13μm CMOS工艺,电源电压为1.2V.测试结果表明,DCO的调谐范围达到3.44～5.25GHz,调谐百分比为41.7%.在4.06GHz频率处,振荡器电路在1MHz频偏处的相位噪声为-117.6 dBc/Hz.在调谐范围内,设计的DCO电路在1 MHz频偏处的FOM值为182～185.5dBc/Hz.功耗为1.44～3.6mW.A wideband LC-based digitally controlled oscitlator（DCO） for all-digital phase-locked loop（ADPLL） application is designed. By employing coarse tuning, moderate tuning and fine tuning capacitor banks, wide tuning range is realized. The characters of low power and high figure of merit（FOM） are realized by using complementary NMOS and PMOS cross-coupled circuits. The DCO is designed in TSMC 0. 13μm CMOS process, with 1.2 V power supply. Measurement results show that the tuning range is 3. 44--5. 25 GHz（41. 7%）. The measured phase noise is --117.6 dBc/Hz at 1 MHz offset for 4.06 GHz carrier. The FOM at 1 MHz offset is 182--185.5 dBc/Hz in the tuning ranue. The Dower consumotion is 1.44--.% 6 mW

关 键 词：数控振荡器 宽带 全数字锁相环 

分 类 号：TN772[电子电信—电路与系统]