Analysis of two-stage passive vibration isolation system for crystal oscillator at high-frequency vibration

In this paper, the influence of vibrations on the crystal oscillator is analyzed in theory and the function of SSB phase noise under vibrations is given. To restrain high-frequency vibration effectively, a two-stage passive vibration isolation system for crystal oscillator is presented. This kind of...

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Published in2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time forum pp. 501 - 504
Main Authors Wei Fu, Zhichao Qian, Xianhe Huang, Feng Tan
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2009
Subjects
Acceleration
Amplitude modulation
Bandwidth
Communication standards
Frequency
Isolation technology
Navigation
Oscillators
Phase noise
Radar theory
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Summary:In this paper, the influence of vibrations on the crystal oscillator is analyzed in theory and the function of SSB phase noise under vibrations is given. To restrain high-frequency vibration effectively, a two-stage passive vibration isolation system for crystal oscillator is presented. This kind of vibration isolation system has low displacement transmissibility at high-frequency vibrations. The simulations and experiments are carried out. Experimental results show that at the random vibration whose acceleration spectral density is 0.05 g 2 /Hz with frequency range 20 Hz to 2000 Hz, the SSB phase noise level of a 12.8 MHz AT-cut crystal oscillator (whose acceleration sensitivity is about 2times10 -9 /g ) is reduced approximately from -100 dBc/Hz to -120 dBc/Hz at 1 KHz offset by this vibration isolation system.
ISBN:1424435110
9781424435111
ISSN:2327-1914
DOI:10.1109/FREQ.2009.5168230