Because the resonanant frequency
of a SAW device is not dependant on the entire mass of the substrate
unlike conventional quartz devices, they are particularly suited
to high frequency applications right into the gigahertz region.
Having a high frequency fundamental oscillation mode increases
simplicity and reduces design cost compared to traditional quartz
with associated frequency multiplication circuitry.
SAWs too have an advantage over traditional LC / RC electrical
filter and resonance solutions in that the method of vibration is
mechanical, and as such are not affected by fluctuations in supply
or peripheral circuit voltage.