Analysis of the crystal oscillators phase noises and methods of their reduction

The article determines main components of the communication devices phase noises and observes methods of measurement and assessment of main components of quartz oscillators phase noises. A practical study of the parameters of crystal oscillators and the means of optimizing of the phase noises introduced by them was conducted. The article introduces a method for reducing the noises with thermostat structural means, in order to increase thermodynamic stability of the quartz resonator. Factors affecting the level of noises are observed, depending on the manufacturing technology of the quartz resonator. According to the results of the experimental data the article provides recommendations for their reduction.