Fig. 2: Simulated results of FEM.

a Schematic of simulation model and emission sensitivity spectra; b vibration amplitude and phase spectra; c time-domain response of the PMUT before sealing; d time-domain response of the PMUT after sealing
a Schematic of simulation model and emission sensitivity spectra; b vibration amplitude and phase spectra; c time-domain response of the PMUT before sealing; d time-domain response of the PMUT after sealing