Title :
Drive-level dependence of long-term aging in quartz resonators
Author :
Watanabe, Yasuaki ; Fujita, Naoto ; Goka, Shigeyoshi ; Sekimoto, Hitoshi ; Uchida, Takeshi
Author_Institution :
Graduate Sch. of Eng., Tokyo Metropolitan Univ., Japan
Abstract :
To analyze the factors of frequency aging in ultra-stable quartz crystal oscillators, a novel system that continuously measures the stability in both resonant frequencies of the resonators and oscillation frequencies has been proposed. Experimental results show that the long-term drift of resonant frequency depends mainly on the amplitude of the crystal driving current and that the aging of the circuit partly affects the aging of oscillation frequency
Keywords :
ageing; crystal resonators; frequency stability; phase noise; SiO2; crystal driving current; crystal oscillators; drive-level dependence; frequency aging; long-term aging; long-term drift; oscillation frequencies; quartz resonators; resonant frequencies; stability; Aging; Circuit stability; Circuit testing; Fluctuations; Frequency estimation; Frequency measurement; Oscillators; RLC circuits; Resonant frequency; Resonator filters;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840790
