Acceleration sensitivity as a function of temperature

Acceleration sensitivity measurements on quartz resonators have been made as a function of temperature from -50°C to +100°C. 100 MHz and 10 MHz resonators were measured. Several cuts were tested including AT, SC, and IT. Acceleration sensitivity is characterized by the vector Γ. The variation in Γ with temperature is important in applications where Γ is specified over a wide temperature range or when the vectorial properties of Γ are being utilized to minimize the acceleration sensitivity in a particular direction. Results indicate that the direction and magnitude of the acceleration sensitivity vector Γ can vary dramatically with temperature. The variations are greater at high frequencies than at low frequencies. Likewise, the variations are greater in resonators with small Γ than in those with larger Γ