Low Phase Noise Wine-Glass Oscillator Realized Using Enhanced Support Transducer Design

2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF) Pub Date : 2020-07-01 DOI:10.1109/IFCS-ISAF41089.2020.9234886

Hsin-Tung Jen, Gayathri Pillai, Shengyou Liu, Sheng-Shian Li

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Abstract

An array of short mechanical couplers scheme to realize a support transducer enabled Wine-glass resonator/oscillator exhibiting a quality factor ($Q$) of 17,000 and an oscillator Phase Noise (PN) meeting the GSM spec. at 1 kHz and 1 MHz offsets has been demonstrated in this work. A 20.3-MHz Wine-glass resonator fabricated using the MEMSCAP platform is used to implement the oscillator. The meticulous structural and material engineering aspect of the resonator improves the quality factor of the design from 9,500 to 17,000, making the resonator an ideal candidate for high-end oscillator applications. An attenuator and phase control methodology along with commercially available amplifiers has been used to realize a low phase noise oscillator with a PN of −134.1 dBc/Hz and −152.3 dBc/Hz at 1 kHz and 1 MHz offsets respectively while divided down to GSM's 13 MHz.

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采用增强型支撑换能器设计实现低相位噪声酒杯振荡器

在这项工作中，我们展示了一种短机械耦合器阵列，以实现支持换能器的酒杯谐振器/振荡器，其质量因子(Q$)为17,000，振荡器相位噪声(PN)满足GSM规范的1 kHz和1 MHz偏移量。采用MEMSCAP平台制造的20.3 mhz酒杯谐振器来实现振荡器。谐振器细致的结构和材料工程方面将设计的质量因子从9,500提高到17,000，使谐振器成为高端振荡器应用的理想候选者。使用衰减器和相位控制方法以及商用放大器实现了低相位噪声振荡器，其PN分别为- 134.1 dBc/Hz和- 152.3 dBc/Hz，分别为1 kHz和1 MHz偏移，同时划分为GSM的13 MHz。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)

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