摘要
提出一种带有开关电流源的电感电容压控振荡器(LC VCO)。该技术通过反馈电容将电感电容压控振荡器的输出耦合到电流源,形成了电流源的开关特性,从而减小了电感电容压控振荡器的相位噪声。提出的电感电容压控振荡器采用华虹NEC的0.18μm SiGe BiCMOS工艺,工作频率为5.7 GHz,相位噪声为-113.0 dBc/Hz@1MHz,功耗为2.3 mA。在其他性能相同的情况下,提出的电感电容压控振荡器的振荡频率比典型的电感电容压控振荡器的相位噪声小4.5 dB。
An Lnductor-Capacitor Voltage-Controlled Oscillator(LC VCO) with the switched current source circuit is proposed. The switched current source circuit is built by the coupling capacitors between the resonant circuit and the current source circuit, and then the phase noise of the proposed LC VCO is decreased. The proposed LC VCO is implemented in the Huahong NEC SiGe 0.18 μm BiCMOS process, and its oscillation frequency is 5.70 GHz and phase noise is -113.0 dBc/Hz@1MHz with 2.3 mA DC current consumption. The measured results demonstrate that the phase noise of the proposed LC VCO is reduced by 4.5 dB compared to that of the typical LC VCO under the same conditions.
出处
《太赫兹科学与电子信息学报》
2014年第3期466-470,共5页
Journal of Terahertz Science and Electronic Information Technology
基金
国家科技重大专项支持SiGe-BiCMOS产品平台开发课题(2009ZX02303-04)
关键词
电感电容压控振荡器
开关电流源
振荡频率
相位噪声
inductor-capacitor Voltage-Controlled Oscillator
switched current source
oscillation frequency
phase noise
作者简介
吕志强(1974-),男,哈尔滨市人,博士,副研究员,研究方向为混合信号和射频集成电路设计.email:lvzhiqiang@ime.ac.cn.
陈岚(1968-),女,西安市人,博士,副研究员,博士生导师,研究方向为纳米/SOC芯片设计方法学及电子设计产业共性技术,包括纳米芯片设计可制造性设计技术(DFM)、SoC/IP核共性技术、非挥发存储器驱动电路及嵌入式存储编译器技术、移动计算的低功耗SoC设计技术、主动安全芯片及物联网系统架构等.