Title :
Precise measurement of phase velocity of surface acoustic waves using parallel comb filters
Author_Institution :
Device Technol. Res. Lab., Sony Corp., Kanagawa, Japan
Abstract :
An improved technique for measuring SAW velocity using parallel comb filters is reported. The measured velocity on the free surface of 36 degrees ST-cut quartz is 3151.9 m/s. The relative standard deviation of +or-57 p.p.m. means that this is currently the most precise technique to measure SAW velocity.
Keywords :
acoustic wave velocity measurement; surface acoustic waves; ST-cut quartz; free surface; parallel comb filters; phase velocity; standard deviation; surface acoustic waves;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890923
