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The paper describes farther progress in the internally heated resonators (IHR) resulting is essential improvement of their frequency stability at remaining extremely small size, power consumption and warm-up time. There is also considered in the paper an effective solution of suppression of the B-mode in the oscillator circuitry based on novel "dynamic selection" method. Experimental study...
The paper is devoted to study of physical causes of phase-noise of crystal oscillators associated with the crystal technology. It was found that this source contributes into the phase-noise though instability of the quartz - electrodes transition (QET) modulating the crystal parameters. A model linking the oscillator frequency fluctuations with instability of QET, equivalent parameters of the crystal,...
The paper is devoted to experimental study of non-linearity of HFF crystal units and its influence on the quartz filter intermodulations. On statistical treatment of the measurement data the regression coefficients linking the crystal parameters non-linearity with the intermodulation level have been defined. The origin of the crystal non-linearity was explored through standard fabrication process...
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