论文信息 - Application of synchronous two-port resonators for measurement of SAW parameters in piezoelectric crystals

Application of synchronous two-port resonators for measurement of SAW parameters in piezoelectric crystals

The synchronous two-port resonator can be used for the determination of SAW parameters, including velocity, electromechanical coupling coefficient, and reflection coefficient of one strip. These parameters can be determined from a comparison between the measured and calculated transfer functions of the resonator. Using this technique, the SAW free surface velocity of the 45/spl deg/XZ-cut of lithium tetraborate (Li/sub 2/B/sub 4/O/sub 7/) crystal was found to be equal to 3436 m/s. The other measured parameters agree well with the values found in the literature.

W. Soluch

[1] N. M. Shorrocks,et al. Lithium Tetraborate - A New Temperature Compensated Piezoelectric Substrate Material for Surface Acoustic Wave Devices , 1981 .

[2] Scattering Matrix Approach to SAW Resonators , 1976 .

[3] Y. Ebata,et al. A 45° X Cut Li2B4O7Single Crystal Substrate for SAW Resonators , 1987, IEEE 1987 Ultrasonics Symposium.

[4] T. Shiosaki,et al. Temperature Compensated Piezoelectric Lithium Tetraborate Crystal for High Frequency Surface Acoustic Wave and Bulk Wave Device Applications , 1985, IEEE 1985 Ultrasonics Symposium.

[5] Yicheng Lu,et al. Pure-mode measurements of Li/sub 2/B/sub 4/O/sub 7/ material properties , 1994, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.