| 应用于WSN的0.5 V 4.8 GHz CMOS LC VCO设计 |
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| 引用本文： | 李智群,赵晟. 应用于WSN的0.5 V 4.8 GHz CMOS LC VCO设计[J]. 解放军理工大学学报(自然科学版), 2012, 0(6): 615-619. DOI: - |
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| 作者姓名： | 李智群 赵晟 |
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| 作者单位： | 1.东南大学 射频与光电集成电路研究所，江苏 南京 210096； 2.东南大学 教育部射频与集成电路工程研究中心，江苏 南京 210096； 3.江苏省无线传感网重点实验室，江苏 无锡 214135 |
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| 基金项目： | 国家863计划资助项目（2007AA01Z2A7）；江苏省科技成果转化基金资助项目（ BA2010073）. |
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| 摘 要： | 为设计一个可应用于无线传感网的0.5 V 4.8 GHz CMOS LC压控振荡器，采用传统差分负阻结构的电感电容VCO核心电路，添加开关电容阵列增大VCO的调谐范围，利用升压电路和反相器的组合提高控制信号产生电路的性能，通过调节负阻管的宽长比等方法来优化VCO的相位噪声性能，保证VCO能在0.5 V的低供电电压下稳定工作，相位噪声达到-119.3 dBc/Hz@1 MHz，VCO的频率调谐范围为4.3~5.3 GHz，相位噪声小于-115 dBc/Hz@1 MHz，最低可达-121.2 dBc/Hz@1 MHz，核心电路电流约为2.6 mA，满足无线传感网的应用要求。
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| 关 键 词： | CMOS工艺 电感电容压控振荡器 相位噪声 开关电容阵列 升压电路 |
| 收稿时间： | 2012-02-12 |
| 修稿时间： | 2012-02-12． |
0.5 V 4.8 GHz CMOS LC VCO for WSN application |
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| LI Zhi-qun and ZHAO Sheng. 0.5 V 4.8 GHz CMOS LC VCO for WSN application[J]. Journal of PLA University of Science and Technology(Natural Science Edition), 2012, 0(6): 615-619. DOI: - |
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| Authors: | LI Zhi-qun and ZHAO Sheng |
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| Affiliation: | 1.Institute of RF & OE-ICs, Southeast University, Nanjing 210096,China;2.Engineering Research Center of RF-ICs & RF-Systems, Ministry of Education, Southeast University,Nanjing 210096,China; 3.Jiangsu Provincial Key Laboratory of Sensor Network Technology, Wuxi 214135, China |
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| Abstract: | A 0.5 V 4.8 GHz CMOS LC VCO for WSN application was designed. The VCO uses traditional differential negative resistance structure. With a switched capacitor array,VCO achieves a large tuning range. Thanks to the combination of voltage boosting circuit, VCO can have a control voltage larger than the supply voltage. Several technologies like width length ratio adjusting of the transistors were used to optimize phase noise performance. The VCO uses 0.13 μm CMOS technology. The proposed VCO achieves a phase noise less than -115 dBc/Hz@1 MHz, and -121.2 dBc/Hz at most and consumes about 2.6 mA core current at 0.5 voltage supply. The performance of VCO meets the requirement of the design target. |
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| Keywords: | CMOS scaled technology LC VCO phase noise switched tuning voltage boosting circuit |
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