数字锁相环频率计的非线性观测器

M. Houdebine, M. Alamir, S. Dedieu, O. Sename
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引用次数: 0

摘要

为了提高数字锁相环反馈路径的输出频率测量精度,本文提出了一种高效且易于实现的观测器。该观测器改善了射频锁相环输出相位噪声,消除了测量偏移。推导了理论表达式来评价其效率,仿真结果说明了相位降噪的效果。
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Nonlinear observer for Frequency Meter in Digital Phase Locked Loops
This paper presents an efficient and easy to implement observer to increase the output frequency measurement accuracy on a Digital Phase Locked Loop feedback path. The proposed observer improves the Radio Frequency PLL output phase noise and cancels the measurement offset. Theoretical expressions have been derived to evaluate its efficiency and simulation results illustrate the phase noise reduction.
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