THE CALCULATION OF ELECTRICAL CIRCUIT PARAMETERS OF QUARTZ CRYSTAL RESONATORS WITH CONSIDERATION OF EQUIVALENT VISCOSITY
Electrical circuit parameters such as resistance and quality factor of a quartz crystal resonator cannot be determined through vibration analysis without considering the presence of dissipation. We know that electrical parameters are strongly affected by viscosity from material damping, manufacturing, and packaging processes. The results show that the motional resistance from theoretical calculation with material viscosity which is from earlier measurements is much smaller than actual measurements, and it is suspected that the viscosity from substructures, bonding, air, packaging and so on are not considered but are significant. Thus, this paper we calculate electrical parameters of AT-cut quartz crystal resonators through the consideration of equivalent viscosity with complex elastic constants.
Quartz crystal resonators Electrical parameters Equivalent viscosity Resistance Vibration Plate
Ji WANG Yu-mei CHEN Li-hong WANG Rong-xing WU Jian-ke DU
Piezoelectric Device Laboratory, School of Mechanical Engineering & Mechanics, Ningbo University,818 Fenghua Road, Ningbo, Zhejiang 315211, China
国际会议
深圳
英文
387-390
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）