An approximate two-dimensional equivalent circuit of a nominal thickness mode piezoelectric disk with radial mode coupling is proposed. 在压电圆片振动时只包含厚度模和径向模的近似条件下,推导出二维振动的近似等效电路。
Mason researched this mode at first, and he derived the electrical admittance formula and approximate equivalent circuit that is only suitable to the vicinity of the fundmental frequency. 这种振动方式,Mason曾作过详细研究,得到了电导纳表达式以及只适用于基频共振频率附近的简化等效线路。