5GHz0.18μm CMOS工艺正交输出VCO  

5 GHz 0.18 μm CMOS quadrature output VCO

作　　者：陈莹梅[1] 王志功[1] 朱恩[1] 冯军[1] 章丽[1] 

机构地区：[1]东南大学射频与光电集成电路研究所,江苏南京210096

出　　处：《光通信研究》2004年第2期39-41,共3页Study on Optical Communications

基　　金：国家"八六三计划"资助项目(2001AA312060)

摘　　要：文章采用全开关状态的延时单元和双延时路径两种电路技术设计了一种高工作频率、低相位噪声的环形振荡器.环路级数采用偶数级来获得两路相位相差90℃的正交输出时钟.采用TSMC0.18μmCMOS工艺进行流片,电压控制振荡器(VCO)的频率范围为4.9～5.5GHz,模拟的相位噪声为-119.3dBc/Hz@5M,采用1.8V电源电压,核芯电路的功耗为30mW,振荡器核芯面积为60μm×60μm.This paper presents two circuit techniques of full switching delay cells and dual-delay path to design a high operate frequency, low noise ring oscillator. An even-stage ring oscillator is adopted to generated two quadrature output clock of 90 degrees phase differences. The chip is fabricated in 0.18 μm CMOS process, VCO operates at 4.9 GHz to 5.5 GHz, the simulated phase noise is -119.3 dBc/Hz at 5 MHz offset. With the 1.8 V-power supply, the core circuit power is 30 mW, the chip core area is 60 μm×(60 μm.)

关 键 词：CMOS 相位噪声 环形振荡器 电压控制振荡器 VCO 正交输出 光纤通信 

分 类 号：TN752[电子电信—电路与系统] TN929.11