Analysis of resonance characteristics of Bragg reflector type film bulk acoustic resonator

► We derived a mathematical model for film bulk acoustic resonator with acoustic Bragg resonator in order to analyze the resonance characteristics. ► We verified the derived mathematical model by experiment of PZT element with Bragg reflectors. ► We considered the ZnO based film bulk acoustic resonator with various acoustic Bragg reflectors. ► We analyzed various parameters affecting the performance of film bulk acoustic resonator with Bragg reflector by using the derived model.