| 正交相位输出压控振荡器的低相位噪声优化设计 |
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| 引用本文： | 祁楠,李国林.正交相位输出压控振荡器的低相位噪声优化设计[J].电子技术应用,2008,34(8). |
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| 作者姓名： | 祁楠 李国林 |
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| 作者单位： | 1. 清华大学微电子学研究所,北京,100084
2. 清华大学电子工程系,北京,100084 |
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| 摘 要： | 分析了负阻结构 LC 压控振荡器各组成部分对相位噪声的贡献途径及优化方法;介绍了利用两独立 VCO 核心输出正交相位信号的原理及其相位噪声优化方法;利用所得结论设计出工作于 ISM波段2.4GHz 的 QVCO,相位噪声在100kHz、1MHz 和3MHz 频偏处分别达到-103.3、-121.1和-125.9dBc/Hz,仅消耗功率3.8 mW;所设计电路利用 HJTC0.18μm工艺制造,占用芯片面积0.75mm×1mm。
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| 关 键 词： | 压控振荡器 相位噪声 功耗 正交相位输出振荡器 |
Phase noise optimizing in the design of quadrature-output voltage controlled oscillators |
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| QI Nan,LI Guo Lin.Phase noise optimizing in the design of quadrature-output voltage controlled oscillators[J].Application of Electronic Technique,2008,34(8). |
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| Authors: | QI Nan LI Guo Lin |
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| Affiliation: | QI Nan LI Guo Lin(1.Institute of Microelectronics,Tsinghua University,Beijing 100084,China,2.Dept.of Electronic Engineering,China) |
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| Abstract: | The principle of generating quadrature outputs by VCO is introduced.A detailed analysis is carried on the contribu- tion of each component to phase noise for LC-VCOs.The conclusions are extended to the design of quadrature output VCOs,A low power and low phase noise quadrature VCO is simulated and sent to tape-out aiming to verify the optimizing methods. |
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| Keywords: | voltage controlled oscillator(VCO) phase noise power consumption quadrature output oscillator(QVCO) |
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