Title :
Doubly rotated quartz resonators with a low amplitude-frequency effect: the LD-cut
Author :
Gufflet, Nicolas ; Sthal, Fabrice ; Boy, Jean-Jacques ; Bourquin, Roger ; Mourey, Marc
Author_Institution :
Lab. de Chronometrie, Electronique et Piezoelectricite, Ecole Nationale Superieure de Mecanique et des Microtechniques, Besancon, France
Abstract :
This article deals with a crystal quartz cut with virtually no amplitude-frequency effect (also called "isochronism defect" or "anisochronism"). The cut, called LD-cut (Low isochronism Defect), is set in a BVA-type structure for later use in an Ultra-Stable Oscillator (USO). Various design parameters are presented, along with the properties of the resonator. The resonance frequencies of various modes, the temperature dependence, the motional parameters and the phase noise in relation to the power supplied to the resonator are mainly studied. These properties are compared to those of the SC-cut resonators.
Keywords :
crystal resonators; phase noise; quartz; BVA structure; LD-cut quartz crystal; SiO/sub 2/; amplitude-frequency effect; anisochronism; design parameters; doubly rotated quartz resonator; isochronism defect; motional parameters; phase noise; resonance frequency; temperature dependence; ultra-stable oscillator; Fluctuations; Noise generators; Oscillators; Phase noise; Power generation; Power supplies; Resonance; Resonant frequency; Temperature dependence; Vibration measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
