A 4.8GHz CMOS Fully Integrated LC Balanced Oscillator with Symmetrical Noise Filter Technique and Large Tuning Range  

一种LC全集成、具有对称噪声滤波及宽调节范围的4.8GHz CMOS平衡振荡器(英文)

作　　者：杨丰林[1] 张钊锋 李宝骐 闵昊[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200433 [2]鼎芯通讯(上海)有限公司,上海201203

出　　处：《Journal of Semiconductors》2005年第3期448-454,共7页半导体学报（英文版）

摘　　要：This paper presents a fully integrated 4 8GHz VCO with an invention——symmetrical noise filter technique.This VCO,with relatively low phase noise and large tuning range of 716MHz,is fabricated with the 0 25μm SMIC CMOS process.The oscillator consumes 6mA from 2 5V supply.Another conventional VCO is also designed and simulated without symmetrical noise filter on the same process,which also consumes 6mA current and is with the same tuning.Simulation result describes that the first VCO’ phase noise is 6dBc/Hz better than the latter’s at the same offset frequency from 4 8GHz.Measured phase noise at 1MHz away from the carrier in this 4 8GHz VCO with symmetrical noise filter is -123 66dBc/Hz.This design is suitable for the usage in a phase locked loop and other consumer electronics.It is amenable for future technologies and allows easy porting to different CMOS manufacturing process.将对称噪声滤波技术应用到4 8GHz LC全集成 VCO设计中.该 VCO具有很低的相位噪声以及 716MHz的调节范围,在SMIC 0 25μm单层多晶、五层金属、n阱 RF CMOS工艺上实现,在2 5V电源电压下工作电流仅为6mA,与常规VCO比较,在相同条件下,噪声性能改善了6dBc/Hz.芯片测试结果表明,在偏离4 8GHz载波1MHz的地方相位噪声为-123 66dBc/Hz,该设计在锁相环及其他消费类电子产品中有广泛应用.

关 键 词：VCO symmetrical noise filter radio frequency INDUCTOR switch capacitor 

分 类 号：TN752[电子电信—电路与系统]