Micromechanical vibration absorber for frequency stability improvement of DETF oscillator

This article explores a novel way to improve the frequency stability of micromechanical double-ended tuning fork (DETF) resonators. The aim of this work is to use a non-linear vibration absorber to improve the frequency stability of the oscillator. A vibration absorption device is set up on the osci...

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Bibliographic Details
Published in:Journal of micromechanics and microengineering 2019-04, Vol.29 (4), p.45005
Main Authors: Du, Jianshu, Wei, Xueyong, Ren, Juan, Wang, Jiuhong, Huan, Ronghua
Format: Article
Language:English
Subjects:
coupled resonators
frequency stability
MEMS
micromechanical resonator
oscillator
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Summary:This article explores a novel way to improve the frequency stability of micromechanical double-ended tuning fork (DETF) resonators. The aim of this work is to use a non-linear vibration absorber to improve the frequency stability of the oscillator. A vibration absorption device is set up on the oscillator to absorb part of the energy of the oscillator. The influence of the vibration absorber on the frequency stability is studied. The short-term frequency stability of the DETF oscillator can be improved from 378 ppb to 202 ppb by coupling it to a mechanical vibration absorber.
ISSN:0960-1317
1361-6439
DOI:10.1088/1361-6439/ab0364