一种高频二级交叉耦合压控振荡器  

High-Frequency Two-Stage VCO with Cross-Coupled Cell

作　　者：张开伟[1] 戴庆元[1] 肖轶[1] 赵懿[1] 

机构地区：[1]上海交通大学微纳科学技术研究院,上海200030

出　　处：《电子器件》2007年第2期523-525,共3页Chinese Journal of Electron Devices

摘　　要：采用等效为电感特性的负载和交叉耦合结构两种电路技术设计了一种高工作频率、低相位噪声的二级环形振荡器(two-stage VCO).因为是偶数级的环路级数,振荡器可输出两路相差90°的正交输出时钟.采用TSMC0.25μm CMOS工艺参数,用Cadence的spectre软件进行仿真,在2.5V电压下,工作频率为5GHz时,偏离主频1MHz处相位噪声为-87dBc/Hz.功耗:16.7mW.The two circuit techniques of equivalent inductance and cross-coupled configuration are used to design a high frequency,low phase noise two-stage VCO,which can generate two pair quadrature outputs because of its even stage ring.The design was simulated by cadence spectre.Under TSMC 0.25 μm CMOS process,when the supply voltage is 2.5 V,the VCO has a phase noises of-87 dBc/Hz at 1-MHz offset when it is operated at 5 GHz.The core circuit dissipate a total power of 16.7 mW.

关 键 词：二级压控振荡器 交叉耦合 等效电感 锁相环 正交相位 

分 类 号：TN752[电子电信—电路与系统]