BROADBAND HYDROACOUSTIC ANTENNA Russian patent published in 2021 - IPC H04R17/00 

FIELD: acoustics.

SUBSTANCE: invention relates to the field of hydroacoustics, namely to the of hydroacoustic antennas indended for operation as part of hydroacoustic means of underwater autonomous vehicles and other systems. Substance: the intermediate layer, located on the surface formed by the bending-oscillating working pads of rod-type piezoceramic composite transducers, is made of a material with a low shear loss coefficient with a thickness in the range from 0.1 to 0.3 of the length of the sound wave therein, wherein the frequency f_i of the resonance of the transducer caused by the bending oscillations thereof in an aquatic environment should be in the range of f_i=(1.7 to 1.9)×f₀, wherein f₀ is the frequency of the main longitudinal resonance of the transducer.

EFFECT: expanded working frequency band of the antenna with a maintained specific acoustic power and performance coefficient.

1 cl, 1 dwg