About the operation of broadband waveguide type transducers

A relatively simple and effective method of excitation (the task of analysis) transducer of waveguide type (TWT) providing broadband (of the order of 2 octaves) amplitude-frequency and almost linear phase-frequency characteristics of radiation is considered. TWT is made in the form of a coaxial set of piezocylinders with an internal cavity filled with liquid. The analysis of the results of calculations performed in the MatLab environment of the frequency characteristics of sound pressure during TWT radiation in the frontal and rear directions for different values of its construction and excitation parameters is carried out. The characteristic trends and the influence of these parameters on the frequency characteristics of TWT are determined. When the number of piezocylinders is more than 5, the TWT rear radiation decreases by almost an order of magnitude compared to the front one, the phase frequency characteristic of which becomes linear. The possibility of emitting frequency-tunable ultrashort pulses in the TWT operating frequency band is shown. The results of calculations and data from experimental studies of antenna mock-up made up of TWT correlate quite well with each other.

Authors: B. G. Stepanov

Direction: Physics

Keywords: transducer of waveguide type, broadband, amplitude-frequency characteristics, phase-frequency characteristics, short acoustic signals

---

View full article