Experimental evaluation of the influence of external elements on the frequency dependence of the complex resistance module of an acoustic antenna

Abstract

Experimental evaluation of the influence of external elements on the frequency dependence of the complex resistance module of an acoustic antenna

Kirichenko I.A., Vishnevetskiy V.Yu., Starchenko I.B., Markolia A.I., Sizov I.I., Strochan T.P.

Incoming article date: 09.12.2020

The use of a separate receiving antenna at different frequencies in parametric acoustic systems is associated with the irreversibility of nonlinear processes underlying its principle of operation. The paper considers the results of experimental and theoretical studies to assess the influence of external elements on the amplitude-frequency response of a piezoceramic acoustic antenna. The structural scheme of the experimental setup is considered. It is shown that parallel connection of an external inductance to a piezoelectric element allows shifting the antiresonance frequency of an acoustic antenna, which leads to an increase in both the signal amplitude at the antenna output and an increase in the complex resistance module at the operating frequency.

Keywords: acoustic antenna, the sensitivity of the receiving antenna, the amplitude-frequency characteristic, the modulus of the complex resistance