1.
IEEE Trans Ultrason Ferroelectr Freq Control
; 67(5): 1040-1047, 2020 05.
Artigo
em Inglês
| MEDLINE
| ID: mdl-31841406
RESUMO
A numerical method for providing linear phase response of bulk acoustic wave (BAW) piezoelectric transducers (PTs) of acousto-optic devices is developed. Our approach is based on the analytic approximation of the phase response of the PT with the matching electrical circuit and optimization with a differential evolution genetic algorithm. Simulations and experiments were performed for two typical BAW excitation schemes: direct and reflective. Variance of the group delay in the specified frequency range was reduced by an order of magnitude for reflective excitation of BAWs.