Title :
Surface transverse waves exceed the material Q limit for surface acoustic waves on quartz
Author :
Avramov, Lvan D. ; Suohai, Mei
Author_Institution :
Inst. of Solid State Phys., Bulgarian Acad. of Sci., Sofia, Bulgaria
Abstract :
State-of-the-art 1.244-GHz surface transverse wave (STW) resonators on AT-cut quartz are characterized. They demonstrate an unloaded Q of 8144 which is as high as 97% of the material Q limit for surface acoustic waves (SAWs). By analyzing the measured data and accounting for the ohmic loss, it is shown that the material Q for STWs on quartz, experimentally obtained from these devices, is at least 37% higher than the material Q for SAWs.
Keywords :
Q-factor; quartz; surface acoustic wave resonators; 1.244 GHz; AT-cut quartz; SiO/sub 2/; material Q factor; ohmic loss; surface acoustic waves; surface transverse wave resonator; Acoustic materials; Acoustic measurements; Acoustic waves; Data analysis; Loss measurement; Q measurement; Sawing machines; Surface acoustic wave devices; Surface acoustic waves; Surface waves;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
