Characterization of quartz crystal resonators on phase modulation noise without an oscillator

In the time domain, two methods are investigated to classify the phase noise of the resonators. A numerical model of frequency stability of ultra stable quartz oscillator is used to obtain the power spectral density of the phase fluctuations of an oscillator which contains the test resonator. The measurements of the phase noise of the quartz crystal resonators are obtained with a crystal resonator tester. New LD-cut 10 MHz BVA quartz crystal resonators are investigated.