Diffraction loss of the signal in microwave acoustic delay lines with multielement piezoelectric transducers

Abstract

On the basis of the Green’s function, a method for calculation of diffraction fields in multielement piezoelectric transducers used in anisotropic crystal acoustic ducts is developed. The results of the numerical analysis of diffraction fields, which are created by multielement piezoelectric transducers on the face of the acoustic duct, are given together with the results of calculation of the diffraction loss of the main signal and the triple and quintuple transit echoes in an acoustic delay line of the microwave signal, which operates in the direct mode. The dependences of the diffraction loss on the angle between the crystallographic axis and the geometrical axis of the acoustic duct are studied.