低相位噪声宽带LC压控振荡器设计  

Design of wide-band LC VCO with low phase noise

作　　者：唐学锋[1] 

机构地区：[1]湖州师范学院信息工程学院,浙江湖州313000

出　　处：《电子技术应用》2015年第11期54-57,共4页Application of Electronic Technique

基　　金：浙江省湖州市科技计划项目(2014yz07)

摘　　要：基于0.13μm CMOS工艺,设计了一款低相位噪声宽带LC压控振荡器。采用开关电容阵列使VCO在达到宽调谐范围的同时保持了低相位噪声。采用可变容阵列提高了VCO频率调谐曲线的线性度。仿真结果表明,在1.2 V电源电压下,电路功耗为3.6 m W。频率调谐范围4.58 GHz-5.35 GHz,中心频率5 GHz,在偏离中心频率1 MHz处相位噪声为-125d Bc/Hz。This paper presents a wide-band LC VCO with low phase noise based on 0.13 μm CMOS process. Switched capacitor array is included in this VCO that simultaneously achieve very wide tuning range and low phase noise performance. MOS varactor array is used in this VCO to linearize its frequency-voltage characteristic. The VCO consumes 3 mA from a 1.2 Supply. It operates with a wide frequency band from 4.58 GHz-5.35 GHz. The center frequency is 5 GHz and the measured phase noise is -125 dBc/Hz at 1 MHz offset.

关 键 词：压控振荡器 开关电容阵列 可变电容阵列 

分 类 号：TN722.3[电子电信—电路与系统]