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In this paper, prototypes of SC-cut resonators with 5 MHz resonant frequency are presented. The resulting short-term stability of some resonators has been measured lower than 8·10−-14 in terms of Allan standard deviation. The results are compared according to the overtone behavior on different vibrating modes to find a correlation with the intrinsic noise of the resonators. The comparison of these...
This paper reports the methodology and results of noise modeling and tests of a quartz crystal oscillator based on a dedicated integrated circuit (ASIC). Unfortunately, the phase noise of the inner sustaining amplifier is unknown. The challenge is to evaluate the performance limits of this ASIC in an oscillator circuit. The oscillator phase noise computation results from the knowledge of individual...
In this paper, the description of the resonator realization and the topology of the resonator prototype is exposed. Phase noise measurements of a hundred of resonators are given. The noise results are discussed according to the position of the resonators inside the crystal block and physical analysis of the crystal (dislocation). The results are also compared according to their Q-factors measured...
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