一种联合补偿的动态相位噪声优化设计方法  

An Optimal Design Method of Dynamic Phase Noise Based on Combined Compensation

作　　者：成斌[1] 沈文渊[1] 叶锋[1] 穆晓华[1] 蒋创新[1] CHENG Bin;SHEN Wenyuan;YE Feng;MU Xiaohua;JIANG Chuangxin(The 26th Institute of China Electronics Technology Group Corporation,Chongqing 400060,China)

机构地区：[1]中国电子科技集团公司第二十六研究所,重庆400060

出　　处：《压电与声光》2020年第2期178-181,185,共5页Piezoelectrics & Acoustooptics

摘　　要：针对晶体振荡器相位噪声指标振动恶化问题设计了一种无源隔振和有源加速度补偿的联合补偿方案。该方案首先采用两级橡胶减震器实现良好的无源隔振,优化了晶振在300 Hz外的动态相位噪声;同时采用有源加速度电补偿方式弥补了无源隔振系统在近端(约220 Hz)谐振问题,优化了10~200 Hz的动态相位噪声。振动试验实测结果表明,该联合补偿法使晶振动态相位噪声指标在偏离载波10~2000 Hz时均得到了15~35 dB的优化效果。A combined compensation scheme for passive vibration isolation and active acceleration compensation is designed to improve the deterioration of dynamic phase noise of crystal oscillator.In this solution,a two-stage rubber shock absorber is used to realize good passive vibration isolation and optimize the dynamic phase noise of crystal vibration beyond 300 Hz.At the same time,the active acceleration electric compensation method is utilized to make up the resonance problem of the passive vibration isolation system at the near end(about 220 Hz),and the dynamic phase noise of 10~200 Hz is optimized.The results of the vibration experiment show that the combined compensation method can optimize the dynamic phase noise of crystal oscillator by 15~35 dB from the range of 10 Hz to 2000 Hz away from the carrier.

关 键 词：晶体振荡器 相位噪声 联合补偿 频率综合器 加速度 

分 类 号：TN65[电子电信—电路与系统]