A 10GHz LC Voltage-Controlled Oscillator in 0.25μm CMOS  

10GHz 0.25μm CMOS LC压控振荡器(英文)

作　　者：王欢[1] 王志功[1] 冯军[1] 章丽[1] 李伟[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》2008年第3期484-489,共6页半导体学报（英文版）

摘　　要：A monolithic 10GHz LC voltage-controlled oscillator （VCO） is implemented in standard 0.25μm CMOS technology. The VCO adopts an optimized symmetric circular inductor with center-tap, an accumulation-mode MOS （A-MOS） varactor in series with a passive metal-isolator-metal capacitor （MIM-CAP） and a tail current source with an LC filter to operate with high-frequency and low-noise resulting in - 103.2dBc/Hz at 1MHz offset from carrier frequency of 10.2GHz and approximately 11.5% tuning range. With a 3.3V supply voltage, the core circuit consumes 9.9mW. The chip area is 0.67mm × 0.58mm.采用标准0.25μm CMOS工艺实现了10GHz LC压控振荡器.为了适应高频工作,并实现低相位噪声,该压控振荡器采用了手动优化的带中心抽头的对称电感,将A-MOS变容二极管与无源金属-绝缘层-金属电容串联,并采用了带LC滤波器的尾电流源.测试结果显示,当振荡频率为10.2GHz时,在1MHz频偏处相位噪声为-103.2dBc/Hz,调谐范围为11.5%.供电电压为3.3V时,核心电路功耗为9.0mW.芯片面积为0.67mm×0.58mm.

关 键 词：VCO LC oscillator CMOS technology 

分 类 号：TN752[电子电信—电路与系统]