GENERALIZED MODEL OF THE TRANSDUCER OF WAVEGUIDE TYPE. SYNTHESIS PROBLEM
The derivation of the transducer of waveguide type (TWT) radiation and excitation problem using the partial domain method is considered. TWT is formed by a coaxial set of water-filled piezocylinders with amplitude-phase excitation, which provides a mode of wideband radiation by a traveling wave through water-filled apertures of the transducer into conical half-spaces adjacent to them, variable in aperture angle. The results of calculations of the frequency characteristics of sound pressure during radiation of TWT excited in accordance with the solution of the synthesis problem in the frontal and rear directions are presented and analyzed. The influence of the thickness of the passive flanges, which are used for the TWT layout in the antennas, is taken into account. A comparative assessment is given with the results of experimental studies. The influence of sound waves reflected from the TWT apertures on the radiation resistance of piezocylinders and on the electric voltages exciting them, depending on the magnitude of the aperture angle of conical half-spaces, is considered.
Authors: I. S. Pesterev , B. G. Stepanov
Keywords: Broadband, transducer of waveguide type, synthesis problem solution, frequency response, radiation resistance
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