Temperature Compensated Crystal Resonator Based On Stress

This thesis presents a new type of temperature-compensated crystal resonator based on stress. This new type of crystal resonator can be achieved by the use of the relation between the physical characteristics of force frequency and temperature frequency. In this thesis, the design principle and the realization of the temperature-compensated crystal resonator are given in detail. Then data obtained from experiments prove the feasibility of this project and show that we can achieve high frequency-temperature stability which can be±15ppm less than PXO . At last, this thesis also provides some pieces of advice to improve this type of temperature-compensated crystal resonator. As we know, in traditional temperature-compensated crystal resonator, fundamental frequency crystal resonators are usually adopted to carry out the analog compensation. In contrast, this new type resonator not only can choose At-cut fundamental frequency crystal, but also can use AT-cut and SC-cut overtone ones. So we can span the scope of choosing crystal. This new type of temperature-compensated crystal resonator not only can obviously achieve high frequency-temperature stability, but also can simplify, or leave out all the circuits of temperature compensation, and its resulting small volume, low cost, and low consumption of power possess utility value. At the same time, from the aspect of elastic mechanics, this thesis studies frequency shifts in crystal resonators due to intrinsic stress from electrodes of different thickness and provides meticulous calculations.