surface-acoustic-wave device

surface-acoustic-wave device

[′sər·fəs ə′kü·stik ′wāv di‚vīs] (electronics) Any device, such as a filter, resonator, or oscillator, which employs surface acoustic waves with frequencies in the range 107-109 hertz, traveling on the optically polished surface of a piezoelectric substrate, to process electronic signals.