Optimization for a Novel Electrode Structure of Quartz Crystal Resonator with Uniform Vibration Displacement

To improve the uniformity of surface vibration displacement in quartz crystal resonators, this paper proposes a novel electrode design featuring rectangular double-ring structure for the first time. This paper studies the effects of the electrode region size ratio, the size of the non-electrode region, and the overall electrode size on the thickness shear vibration characteristics of the quartz crystal resonator with the rectangular double-ring electrodes. The optimal electrode dimensions were identified. The results indicate that by rationally designing the electrode region size ratio, the size of the non-electrode region, and the overall electrode size, an approximately uniform vibration displacement distribution can be achieved in the central part of the quartz crystal resonator with the rectangular double-ring electrodes. Finally, by comparing the vibration displacement curves of quartz crystal resonators with rectangular electrodes structure and circular double-ring electrodes structure, we find that the vibration displacement distribution of rectangular double-ring electrodes quartz crystal resonator is more uniform under the same dimensions.