On the issue of construction and excitation of broadband waveguide type transducers and antennas made up of them

Options for the construction of broadband transducer of waveguide type (TWT) and antennas assembled from them are considered, which make it possible to reduce their weight and size parameters by almost half while maintaining radiation efficiency and bandwidth. TWT is a coaxial set of piezocylinders with a liquid-filled inner cavity in which a traveling wave mode is implemented along the TWT axis. One option involves building antennas from two TWT with different frequencies, while the other option is based on replacing each piezocylinder of TWT with two piezocylinders with different frequencies. The results of calculations of frequency and pulse characteristics of sound pressure, as well as antennas directional characteristics are presented. A comparative characteristic of antenna construction options with different TWT designs is given, their advanta-ges and disadvantages are noted. The directional properties of antennas during their operation in pulsed and continuous modes are analyzed.

Authors: G. S. Skuratov, B. G. Stepanov

Direction: Physics

Keywords: transducer of waveguide type, broadband, frequency characteristics, antenna, directional characteristic, short acoustic signals

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