Predicting phase noise in crystal oscillators

被引：15

作者：

Sthal, F ^{[1
]}

Galliou, S

Gufflet, N

Mourey, M

机构：

[1] Ecole Natl Super Mecan Microtech, Franche Comte Elect Mecan Therm & Opt Sci & Techn, Dept Lab Chronometrie Elect & Piezoelect,CNRS, UMR 6174, F-25000 Besancon, France

[2] KVG Quartz Crystal Technol GMBH, D-74924 Neckarbschofsheim, Germany

来源：

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2005年 / 52卷 / 01期

关键词：

D O I：

10.1109/TUFFC.2005.1397347

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In order to predict the phase noise in crystal oscillators an enhanced phase-noise model has been built. With this model, the power spectral densities of phase fluctuations can be computed in different points of the oscillator loop. They are calculated from their correlation functions. The resonator-caused noise as well as the amplifier-caused noise are taken into account and distinguished. To validate this enhanced model, the behavior of a batch of 10 MHz quartz crystal oscillators is observed and analyzed. The tested batch has been chosen in a facility production. Their associated resonators have been selected according to the value of their resonant frequency and their motional resistance. Open-loop and closed-loop measurements are given. The phase noise of the overall oscillator working in closed loop is provided by the usual active method. Theoretical and experimental results are compared and discussed.

引用

页码：27 / 30

页数：4

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