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Abstract：
The synchronization phenomenon in nature has been utilized in sensing and timekeeping fields due to its numerous advantages, including amplitude and frequency stabilization, noise reduction, and sensitivity improvement. However, the limited synchronization bandwidth hinders its broader application, and few techniques have been explored to enhance this aspect. In this paper, we conducted theoretical and experimental studies on the unidirectional synchronization characteristics of a resonator with phase lock loop oscillation. A novel enhancement method for the synchronization bandwidth using a parametrically excited MEMS oscillator is proposed, which achieves a remarkably large synchronization bandwidth of 8.85 kHz, covering more than 94% of the hysteresis interval. Importantly, the proposed method exhibits significant potential for high-order synchronization and frequency stabilization compared to the conventional directly excited oscillator. These findings present an effective approach for expanding the synchronization bandwidth, which has promising applications in nonlinear sensing, fully mechanical frequency dividers, and high-precision time references.
摘要：
由于其众多优点，自然界中的同步现象已被用于传感和计时领域，包括振幅和频率稳定，降噪,和灵敏度的提高。然而,有限的同步带宽阻碍了其更广泛的应用，并且很少探索技术来增强这方面。在本文中,我们对具有锁相环振荡的谐振器的单向同步特性进行了理论和实验研究。提出了一种使用参数激励的MEMS振荡器增强同步带宽的新方法。这实现了8.85kHz的非常大的同步带宽，覆盖了94%以上的滞后区间。重要的是,与传统的直接激励振荡器相比，该方法在高阶同步和频率稳定方面具有重要的潜力。这些发现为扩展同步带宽提供了一种有效的方法，在非线性传感中具有广阔的应用前景，全机械分频器，和高精度的时间参考。
