11GHz CMOS环形压控振荡器设计  

Design of 11GHz CMOS Ring VCO

作　　者：王雪艳[1] 朱恩[1] 熊明珍[1] 王志功[1] 

机构地区：[1]东南大学射频与光电集成电路研究所,南京210096

出　　处：《Journal of Semiconductors》2005年第1期187-191,共5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 :2 0 0 1AA3 12 0 60 )~~

摘　　要：设计了一种全差分高速环形压控振荡器 (VCO) .该VCO有三级 ,每一级的增益是快慢通路增益的矢量叠加和 ,快慢通路的增益由底部电流源决定 ,差分控制电压通过镜像电流源控制快慢通路的各自电流 ,最终实现对振荡频率的调节 .分析了VCO的工作原理及其相位噪声 .电路采用TSMC公司 0 18μm标准CMOS工艺制作 .测试结果显示 :芯片工作频率为 10 88～ 11 72GHz ,相位噪声为 - 10 1dBc/Hz@10MHz,输出信号抖动为 3 8psrms,在 1 8V电源电压下的直流功耗约为 75mW .A full integrated high-speed ring VCO is designed.The VCO consists of three stages,and each consists of a fast path and a slow path whose output are summed and whose gains are adjusted by tail currents.The tail currents of fast and slow paths are controlled by the control voltage through current mirrors.The VCO is realized in 0.18μm standard CMOS process.Measurements show that the operating frequency covers 10.88～11.72GHz.The phase noise is -101dBc/Hz@10MHz and jitter is about 3.8ps rm.The power consumption is about 75mW at a supply voltage of 1.8V.Potential applications include PLLs and frequency synthesizers.

关 键 词：压控振荡器 相位噪声 射频电路 

分 类 号：TN752[电子电信—电路与系统]