一种确定压电谐振器等效电路参数的新方法及压电负载效应分析。
A new method of determining the equivalent circuit parameters of piezoelectric resonators and analysis of the piezoelectric loading effect.
作者信息
Kim J S, Choi K, Yu I
机构信息
Dept. of Phys., Seoul Nat. Univ.
出版信息
IEEE Trans Ultrason Ferroelectr Freq Control. 1993;40(4):424-6. doi: 10.1109/58.251294.
An inductive method of piezoelectric resonance detection is applied to the determination of equivalent circuit parameters of piezoelectric resonators. Using this method one can measure the resonance frequency and mechanical Q-factor of a resonator directly as well as their dependences on the electrical impedance which is connected to the resonator. From the equivalent circuit analysis the changes in resonance frequency and Q-factor due to the piezoelectric loading effects are determined. Measurements on two typical commercial piezoelectric resonators, an AT-cut quartz crystal and a PZT ceramic resonator, are in good agreement with the analysis.
一种压电共振检测的归纳方法被应用于确定压电谐振器的等效电路参数。使用这种方法，可以直接测量谐振器的共振频率和机械品质因数，以及它们对连接到谐振器的电阻抗的依赖性。通过等效电路分析，确定了由于压电负载效应引起的共振频率和品质因数的变化。对两种典型的商用压电谐振器（一种AT切割石英晶体和一种PZT陶瓷谐振器）的测量结果与分析结果吻合良好。
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