期刊论文

Study on Phase Noise and Stability of Cross-coupled Integrated Quartz Crystal Oscillator

Zeng, J.

中文

湖南大学学报(自然科学版)

1674-2974

2018

45

10

102-107

10.16339/j.cnki.hdxbzkb.2018.10.014

National Natural Science Foundation of China(61404011); Natural Science Foundation of Hunan Province of China (2015JJ3001); Scientific Research Fund of Hunan Provincial Education Department(17B007).

本校为第一机构

通过对相位噪声进行频域分析,构建Lesson噪声优化模型,优化电路参数;并分析预抑制电路的小信号模型,优化其元器件参数,研究带RC滤波器的CMOS交叉耦合结构振荡器的相位噪声和稳定性.基于NUVOTON 0.35μm工艺,采用Cadence完成电路设计、优化与仿真,版图设计与后仿真,并最终完成流片、测试.结果表明:在电源电压为3.3 V时,该振荡器的输出信号频率为20 MHz,相位噪声分别为-135dBc/Hz@1kHz,-156.4dBc/Hz@10kHz,-169.2dBc/Hz@1MHz.当电源电压在±10%范围变化时,频率波动小于$81 \times {10^{ - 6}}$;在工作温度-25℃至85℃范围内,频率波动小于$71 \times {10^{ - 6}}$.

By the frequency domain analysis of phase noise, the optimization model of Lesson noise was established and the parameters in the circuit were improved. Meanwhile, the small signal model was established to optimize the parameters in the pre-suppression circuit. In this way, the phase noise and stability were studied for the cross-coupled integrated quartz crystal oscillator with RC filter. Furthermore, the circuit and layout were designed, simulated and optimized by Cadence with NUVOTON 0.35 μm process. Subsequently, the fabrication and test w...