Surface acoustic wave
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A surface acoustic wave is an acoustic wave traveling along the surface of a material exhibiting elasticity, with an amplitude that typically decays exponentially with depth into the material, such th
Experimental image of surface acoustic waves on a crystal of tellurium oxide
SAW filter inside
A thin-film bulk acoustic resonator is a device consisting of a piezoelectric material manufactured by thin film methods between two conductive – typically metallic – electrodes and acoustically isola
Surface acoustic wave
…below 1.5-2.5 GHz depending on the RF power needed to be filtered. Complementing technology to SAW for frequencies above 1.5-2.5 GHz is based on thin-film bulk acoustic resonators (TFBAR, or FBAR). Much research has been done in the last 20 years in the area of surface acoustic wave sensors. Sensor applications include all areas…
Resonating thin-film bulk acoustic resonator with a square layout