公开(公告)号：US11366152B2

公开(公告)日：2022-06-21

申请号：US16666428

申请日：2019-10-29

Applicant: University of Electronic Science and Technology of China

Inventor： Dong Liu ,  Yan Yan ,  Xiaoting Xiao ,  Bin Gao ,  Guiyun Tian

IPC: G01R29/22 ,  H03H9/17 ,  H03H9/19

Abstract: A method for measuring equivalent circuit parameters and resonant frequency of a piezoelectric resonator, by which the phase-frequency curve of the piezoelectric resonator is measured, and the resonant frequency and the anti-resonant frequency are obtained. Then, the slopes of the phase-frequency curve at the resonant frequency and the anti-resonant frequency are respectively measured. The resonant angular frequency and the anti-resonant angular frequency are also calculated. Finally, the equivalent circuit parameters of the piezoelectric resonator are obtained by solving a system of nonlinear equations.